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636 lines
21 KiB
ReStructuredText
636 lines
21 KiB
ReStructuredText
.. _ISIS:
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****
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ISIS
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****
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:abbr:`ISIS (Intermediate System to Intermediate System)` is a routing protocol
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which is described in :t:`ISO10589`, :rfc:`1195`, :rfc:`5308`. ISIS is an
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:abbr:`IGP (Interior Gateway Protocol)`. Compared with :abbr:`RIP`,
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:abbr:`ISIS` can provide scalable network support and faster convergence times
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like :abbr:`OSPF`. ISIS is widely used in large networks such as :abbr:`ISP
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(Internet Service Provider)` and carrier backbone networks.
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.. _Configuring_isisd:
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Configuring isisd
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=================
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There are no *isisd* specific options. Common options can be
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specified (:ref:`Common_Invocation_Options`) to *isisd*.
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*isisd* needs to acquire interface information from
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*zebra* in order to function. Therefore *zebra* must be
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running before invoking *isisd*. Also, if *zebra* is
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restarted then *isisd* must be too.
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Like other daemons, *isisd* configuration is done in :abbr:`ISIS`
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specific configuration file :file:`isisd.conf`.
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.. _ISIS_router:
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ISIS router
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===========
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To start ISIS process you have to specify the ISIS router. As of this
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writing, *isisd* does not support multiple ISIS processes.
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.. index:: Command {router isis WORD} {}
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Command {router isis WORD} {}
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.. index:: Command {no router isis WORD} {}
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Command {no router isis WORD} {}
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.. _router_isis_WORD:
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Enable or disable the ISIS process by specifying the ISIS domain with 'WORD'.
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*isisd* does not yet support multiple ISIS processes but you must specify
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the name of ISIS process. The ISIS process name 'WORD' is then used for interface
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(see command :ref:`ip_router_isis_WORD`).
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.. index:: {ISIS Command} {net XX.XXXX. ... .XXX.XX} {}
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{ISIS Command} {net XX.XXXX. ... .XXX.XX} {}
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.. index:: {ISIS Command} {no net XX.XXXX. ... .XXX.XX} {}
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{ISIS Command} {no net XX.XXXX. ... .XXX.XX} {}
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Set/Unset network entity title (NET) provided in ISO format.
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.. index:: {ISIS Command} {hostname dynamic} {}
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{ISIS Command} {hostname dynamic} {}
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.. index:: {ISIS Command} {no hostname dynamic} {}
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{ISIS Command} {no hostname dynamic} {}
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Enable support for dynamic hostname.
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.. index:: {ISIS Command} {area-password [clear | md5] <password>} {}
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{ISIS Command} {area-password [clear | md5] <password>} {}
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.. index:: {ISIS Command} {domain-password [clear | md5] <password>} {}
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{ISIS Command} {domain-password [clear | md5] <password>} {}
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.. index:: {ISIS Command} {no area-password} {}
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{ISIS Command} {no area-password} {}
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.. index:: {ISIS Command} {no domain-password} {}
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{ISIS Command} {no domain-password} {}
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Configure the authentication password for an area, respectively a domain,
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as clear text or md5 one.
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.. index:: {ISIS Command} {log-adjacency-changes} {}
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{ISIS Command} {log-adjacency-changes} {}
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.. index:: {ISIS Command} {no log-adjacency-changes} {}
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{ISIS Command} {no log-adjacency-changes} {}
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Log changes in adjacency state.
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.. index:: {ISIS Command} {metric-style [narrow | transition | wide]} {}
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{ISIS Command} {metric-style [narrow | transition | wide]} {}
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.. index:: {ISIS Command} {no metric-style} {}
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{ISIS Command} {no metric-style} {}
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.. _metric-style:
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Set old-style (ISO 10589) or new-style packet formats:
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- narrow Use old style of TLVs with narrow metric
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- transition Send and accept both styles of TLVs during transition
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- wide Use new style of TLVs to carry wider metric
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.. index:: {ISIS Command} {set-overload-bit} {}
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{ISIS Command} {set-overload-bit} {}
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.. index:: {ISIS Command} {no set-overload-bit} {}
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{ISIS Command} {no set-overload-bit} {}
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Set overload bit to avoid any transit traffic.
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.. _ISIS_Timer:
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ISIS Timer
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==========
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.. index:: {ISIS Command} {lsp-gen-interval (1-120)} {}
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{ISIS Command} {lsp-gen-interval (1-120)} {}
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.. index:: {ISIS Command} {lsp-gen-interval [level-1 | level-2] (1-120)} {}
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{ISIS Command} {lsp-gen-interval [level-1 | level-2] (1-120)} {}
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.. index:: {ISIS Command} {no lsp-gen-interval} {}
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{ISIS Command} {no lsp-gen-interval} {}
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.. index:: {ISIS Command} {no lsp-gen-interval [level-1 | level-2]} {}
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{ISIS Command} {no lsp-gen-interval [level-1 | level-2]} {}
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Set minimum interval in seconds between regenerating same LSP,
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globally, for an area (level-1) or a domain (level-2).
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.. index:: {ISIS Command} {lsp-refresh-interval (1-65235)} {}
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{ISIS Command} {lsp-refresh-interval (1-65235)} {}
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.. index:: {ISIS Command} {lsp-refresh-interval [level-1 | level-2] (1-65235)} {}
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{ISIS Command} {lsp-refresh-interval [level-1 | level-2] (1-65235)} {}
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.. index:: {ISIS Command} {no lsp-refresh-interval} {}
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{ISIS Command} {no lsp-refresh-interval} {}
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.. index:: {ISIS Command} {no lsp-refresh-interval [level-1 | level-2]} {}
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{ISIS Command} {no lsp-refresh-interval [level-1 | level-2]} {}
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Set LSP refresh interval in seconds, globally, for an area (level-1) or a domain (level-2).
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.. index:: {ISIS Command} {lsp-refresh-interval (1-65235)} {}
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{ISIS Command} {lsp-refresh-interval (1-65235)} {}
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.. index:: {ISIS Command} {lsp-refresh-interval [level-1 | level-2] (1-65235)} {}
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{ISIS Command} {lsp-refresh-interval [level-1 | level-2] (1-65235)} {}
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.. index:: {ISIS Command} {no lsp-refresh-interval} {}
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{ISIS Command} {no lsp-refresh-interval} {}
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.. index:: {ISIS Command} {no lsp-refresh-interval [level-1 | level-2]} {}
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{ISIS Command} {no lsp-refresh-interval [level-1 | level-2]} {}
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Set LSP refresh interval in seconds, globally, for an area (level-1) or a domain (level-2).
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.. index:: {ISIS Command} {max-lsp-lifetime (360-65535)} {}
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{ISIS Command} {max-lsp-lifetime (360-65535)} {}
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.. index:: {ISIS Command} {max-lsp-lifetime [level-1 | level-2] (360-65535)} {}
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{ISIS Command} {max-lsp-lifetime [level-1 | level-2] (360-65535)} {}
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.. index:: {ISIS Command} {no max-lsp-lifetime} {}
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{ISIS Command} {no max-lsp-lifetime} {}
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.. index:: {ISIS Command} {no max-lsp-lifetime [level-1 | level-2]} {}
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{ISIS Command} {no max-lsp-lifetime [level-1 | level-2]} {}
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Set LSP maximum LSP lifetime in seconds, globally, for an area (level-1) or a domain (level-2).
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.. index:: {ISIS Command} {spf-interval (1-120)} {}
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{ISIS Command} {spf-interval (1-120)} {}
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.. index:: {ISIS Command} {spf-interval [level-1 | level-2] (1-120)} {}
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{ISIS Command} {spf-interval [level-1 | level-2] (1-120)} {}
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.. index:: {ISIS Command} {no spf-interval} {}
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{ISIS Command} {no spf-interval} {}
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.. index:: {ISIS Command} {no spf-interval [level-1 | level-2]} {}
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{ISIS Command} {no spf-interval [level-1 | level-2]} {}
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Set minimum interval between consecutive SPF calculations in seconds.
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.. _ISIS_region:
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ISIS region
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===========
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.. index:: {ISIS Command} {is-type [level-1 | level-1-2 | level-2-only]} {}
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{ISIS Command} {is-type [level-1 | level-1-2 | level-2-only]} {}
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.. index:: {ISIS Command} {no is-type} {}
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{ISIS Command} {no is-type} {}
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Define the ISIS router behavior:
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- level-1 Act as a station router only
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- level-1-2 Act as both a station router and an area router
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- level-2-only Act as an area router only
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.. _ISIS_interface:
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ISIS interface
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==============
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.. index:: {Interface Command} {ip router isis WORD} {}
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{Interface Command} {ip router isis WORD} {}
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.. index:: {Interface Command} {no ip router isis WORD} {}
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{Interface Command} {no ip router isis WORD} {}
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.. _ip_router_isis_WORD:
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Activate ISIS adjacency on this interface. Note that the name
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of ISIS instance must be the same as the one used to configure the ISIS process
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(see command :ref:`router_isis_WORD`).
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.. index:: {Interface Command} {isis circuit-type [level-1 | level-1-2 | level-2]} {}
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{Interface Command} {isis circuit-type [level-1 | level-1-2 | level-2]} {}
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.. index:: {Interface Command} {no isis circuit-type} {}
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{Interface Command} {no isis circuit-type} {}
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Configure circuit type for interface:
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- level-1 Level-1 only adjacencies are formed
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- level-1-2 Level-1-2 adjacencies are formed
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- level-2-only Level-2 only adjacencies are formed
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.. index:: {Interface Command} {isis csnp-interval (1-600)} {}
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{Interface Command} {isis csnp-interval (1-600)} {}
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.. index:: {Interface Command} {isis csnp-interval (1-600) [level-1 | level-2]} {}
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{Interface Command} {isis csnp-interval (1-600) [level-1 | level-2]} {}
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.. index:: {Interface Command} {no isis csnp-interval} {}
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{Interface Command} {no isis csnp-interval} {}
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.. index:: {Interface Command} {no isis csnp-interval [level-1 | level-2]} {}
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{Interface Command} {no isis csnp-interval [level-1 | level-2]} {}
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Set CSNP interval in seconds globally, for an area (level-1) or a domain (level-2).
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.. index:: {Interface Command} {isis hello padding} {}
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{Interface Command} {isis hello padding} {}
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Add padding to IS-IS hello packets.
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.. index:: {Interface Command} {isis hello-interval (1-600)} {}
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{Interface Command} {isis hello-interval (1-600)} {}
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.. index:: {Interface Command} {isis hello-interval (1-600) [level-1 | level-2]} {}
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{Interface Command} {isis hello-interval (1-600) [level-1 | level-2]} {}
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.. index:: {Interface Command} {no isis hello-interval} {}
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{Interface Command} {no isis hello-interval} {}
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.. index:: {Interface Command} {no isis hello-interval [level-1 | level-2]} {}
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{Interface Command} {no isis hello-interval [level-1 | level-2]} {}
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Set Hello interval in seconds globally, for an area (level-1) or a domain (level-2).
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.. index:: {Interface Command} {isis hello-multiplier (2-100)} {}
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{Interface Command} {isis hello-multiplier (2-100)} {}
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.. index:: {Interface Command} {isis hello-multiplier (2-100) [level-1 | level-2]} {}
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{Interface Command} {isis hello-multiplier (2-100) [level-1 | level-2]} {}
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.. index:: {Interface Command} {no isis hello-multiplier} {}
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{Interface Command} {no isis hello-multiplier} {}
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.. index:: {Interface Command} {no isis hello-multiplier [level-1 | level-2]} {}
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{Interface Command} {no isis hello-multiplier [level-1 | level-2]} {}
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Set multiplier for Hello holding time globally, for an area (level-1) or a domain (level-2).
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.. index:: {Interface Command} {isis metric [(0-255) | (0-16777215)]} {}
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{Interface Command} {isis metric [(0-255) | (0-16777215)]} {}
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.. index:: {Interface Command} {isis metric [(0-255) | (0-16777215)] [level-1 | level-2]} {}
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{Interface Command} {isis metric [(0-255) | (0-16777215)] [level-1 | level-2]} {}
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.. index:: {Interface Command} {no isis metric} {}
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{Interface Command} {no isis metric} {}
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.. index:: {Interface Command} {no isis metric [level-1 | level-2]} {}
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{Interface Command} {no isis metric [level-1 | level-2]} {}
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Set default metric value globally, for an area (level-1) or a domain (level-2).
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Max value depend if metric support narrow or wide value (see command :ref:`metric-style`).
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.. index:: {Interface Command} {isis network point-to-point} {}
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{Interface Command} {isis network point-to-point} {}
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.. index:: {Interface Command} {no isis network point-to-point} {}
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{Interface Command} {no isis network point-to-point} {}
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Set network type to 'Point-to-Point' (broadcast by default).
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.. index:: {Interface Command} {isis passive} {}
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{Interface Command} {isis passive} {}
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.. index:: {Interface Command} {no isis passive} {}
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{Interface Command} {no isis passive} {}
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Configure the passive mode for this interface.
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.. index:: {Interface Command} {isis password [clear | md5] <password>} {}
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{Interface Command} {isis password [clear | md5] <password>} {}
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.. index:: {Interface Command} {no isis password} {}
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{Interface Command} {no isis password} {}
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Configure the authentication password (clear or encoded text) for the interface.
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.. index:: {Interface Command} {isis priority (0-127)} {}
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{Interface Command} {isis priority (0-127)} {}
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.. index:: {Interface Command} {isis priority (0-127) [level-1 | level-2]} {}
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{Interface Command} {isis priority (0-127) [level-1 | level-2]} {}
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.. index:: {Interface Command} {no isis priority} {}
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{Interface Command} {no isis priority} {}
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.. index:: {Interface Command} {no isis priority [level-1 | level-2]} {}
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{Interface Command} {no isis priority [level-1 | level-2]} {}
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Set priority for Designated Router election, globally, for the area (level-1)
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or the domain (level-2).
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.. index:: {Interface Command} {isis psnp-interval (1-120)} {}
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{Interface Command} {isis psnp-interval (1-120)} {}
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.. index:: {Interface Command} {isis psnp-interval (1-120) [level-1 | level-2]} {}
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{Interface Command} {isis psnp-interval (1-120) [level-1 | level-2]} {}
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.. index:: {Interface Command} {no isis psnp-interval} {}
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{Interface Command} {no isis psnp-interval} {}
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.. index:: {Interface Command} {no isis psnp-interval [level-1 | level-2]} {}
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{Interface Command} {no isis psnp-interval [level-1 | level-2]} {}
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Set PSNP interval in seconds globally, for an area (level-1) or a domain (level-2).
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.. _Showing_ISIS_information:
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Showing ISIS information
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========================
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.. index:: {Command} {show isis summary} {}
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{Command} {show isis summary} {}
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Show summary information about ISIS.
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.. index:: {Command} {show isis hostname} {}
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{Command} {show isis hostname} {}
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Show information about ISIS node.
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.. index:: {Command} {show isis interface} {}
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{Command} {show isis interface} {}
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.. index:: {Command} {show isis interface detail} {}
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{Command} {show isis interface detail} {}
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.. index:: {Command} {show isis interface <interface name>} {}
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{Command} {show isis interface <interface name>} {}
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Show state and configuration of ISIS specified interface, or all
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interfaces if no interface is given with or without details.
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.. index:: {Command} {show isis neighbor} {}
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{Command} {show isis neighbor} {}
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.. index:: {Command} {show isis neighbor <System Id>} {}
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{Command} {show isis neighbor <System Id>} {}
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.. index:: {Command} {show isis neighbor detail} {}
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{Command} {show isis neighbor detail} {}
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Show state and information of ISIS specified neighbor, or all
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neighbors if no system id is given with or without details.
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.. index:: {Command} {show isis database} {}
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{Command} {show isis database} {}
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.. index:: {Command} {show isis database [detail]} {}
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{Command} {show isis database [detail]} {}
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.. index:: {Command} {show isis database <LSP id> [detail]} {}
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{Command} {show isis database <LSP id> [detail]} {}
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.. index:: {Command} {show isis database detail <LSP id>} {}
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{Command} {show isis database detail <LSP id>} {}
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Show the ISIS database globally, for a specific LSP id without or with details.
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.. index:: {Command} {show isis topology} {}
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{Command} {show isis topology} {}
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.. index:: {Command} {show isis topology [level-1|level-2]} {}
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{Command} {show isis topology [level-1|level-2]} {}
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Show topology IS-IS paths to Intermediate Systems, globally,
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in area (level-1) or domain (level-2).
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.. index:: {Command} {show ip route isis} {}
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{Command} {show ip route isis} {}
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Show the ISIS routing table, as determined by the most recent SPF calculation.
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.. _Traffic_Engineering:
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Traffic Engineering
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===================
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.. index:: {ISIS Command} {mpls-te on} {}
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{ISIS Command} {mpls-te on} {}
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.. index:: {ISIS Command} {no mpls-te} {}
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{ISIS Command} {no mpls-te} {}
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Enable Traffic Engineering LSP flooding.
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.. index:: {ISIS Command} {mpls-te router-address <A.B.C.D>} {}
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{ISIS Command} {mpls-te router-address <A.B.C.D>} {}
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.. index:: {ISIS Command} {no mpls-te router-address} {}
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{ISIS Command} {no mpls-te router-address} {}
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Configure stable IP address for MPLS-TE.
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.. index:: {Command} {show isis mpls-te interface} {}
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{Command} {show isis mpls-te interface} {}
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.. index:: {Command} {show isis mpls-te interface `interface`} {}
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{Command} {show isis mpls-te interface `interface`} {}
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Show MPLS Traffic Engineering parameters for all or specified interface.
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.. index:: {Command} {show isis mpls-te router} {}
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{Command} {show isis mpls-te router} {}
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Show Traffic Engineering router parameters.
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.. _Debugging_ISIS:
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Debugging ISIS
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==============
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.. index:: {Command} {debug isis adj-packets} {}
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{Command} {debug isis adj-packets} {}
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.. index:: {Command} {no debug isis adj-packets} {}
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{Command} {no debug isis adj-packets} {}
|
|
IS-IS Adjacency related packets.
|
|
|
|
.. index:: {Command} {debug isis checksum-errors} {}
|
|
|
|
{Command} {debug isis checksum-errors} {}
|
|
.. index:: {Command} {no debug isis checksum-errors} {}
|
|
|
|
{Command} {no debug isis checksum-errors} {}
|
|
IS-IS LSP checksum errors.
|
|
|
|
.. index:: {Command} {debug isis events} {}
|
|
|
|
{Command} {debug isis events} {}
|
|
.. index:: {Command} {no debug isis events} {}
|
|
|
|
{Command} {no debug isis events} {}
|
|
IS-IS Events.
|
|
|
|
.. index:: {Command} {debug isis local-updates} {}
|
|
|
|
{Command} {debug isis local-updates} {}
|
|
.. index:: {Command} {no debug isis local-updates} {}
|
|
|
|
{Command} {no debug isis local-updates} {}
|
|
IS-IS local update packets.
|
|
|
|
.. index:: {Command} {debug isis packet-dump} {}
|
|
|
|
{Command} {debug isis packet-dump} {}
|
|
.. index:: {Command} {no debug isis packet-dump} {}
|
|
|
|
{Command} {no debug isis packet-dump} {}
|
|
IS-IS packet dump.
|
|
|
|
.. index:: {Command} {debug isis protocol-errors} {}
|
|
|
|
{Command} {debug isis protocol-errors} {}
|
|
.. index:: {Command} {no debug isis protocol-errors} {}
|
|
|
|
{Command} {no debug isis protocol-errors} {}
|
|
IS-IS LSP protocol errors.
|
|
|
|
.. index:: {Command} {debug isis route-events} {}
|
|
|
|
{Command} {debug isis route-events} {}
|
|
.. index:: {Command} {no debug isis route-events} {}
|
|
|
|
{Command} {no debug isis route-events} {}
|
|
IS-IS Route related events.
|
|
|
|
.. index:: {Command} {debug isis snp-packets} {}
|
|
|
|
{Command} {debug isis snp-packets} {}
|
|
.. index:: {Command} {no debug isis snp-packets} {}
|
|
|
|
{Command} {no debug isis snp-packets} {}
|
|
IS-IS CSNP/PSNP packets.
|
|
|
|
.. index:: {Command} {debug isis spf-events} {}
|
|
|
|
{Command} {debug isis spf-events} {}
|
|
.. index:: {Command} {debug isis spf-statistics} {}
|
|
|
|
{Command} {debug isis spf-statistics} {}
|
|
.. index:: {Command} {debug isis spf-triggers} {}
|
|
|
|
{Command} {debug isis spf-triggers} {}
|
|
.. index:: {Command} {no debug isis spf-events} {}
|
|
|
|
{Command} {no debug isis spf-events} {}
|
|
.. index:: {Command} {no debug isis spf-statistics} {}
|
|
|
|
{Command} {no debug isis spf-statistics} {}
|
|
.. index:: {Command} {no debug isis spf-triggers} {}
|
|
|
|
{Command} {no debug isis spf-triggers} {}
|
|
IS-IS Shortest Path First Events, Timing and Statistic Data
|
|
and triggering events.
|
|
|
|
.. index:: {Command} {debug isis update-packets} {}
|
|
|
|
{Command} {debug isis update-packets} {}
|
|
.. index:: {Command} {no debug isis update-packets} {}
|
|
|
|
{Command} {no debug isis update-packets} {}
|
|
Update related packets.
|
|
|
|
.. index:: {Command} {show debugging isis} {}
|
|
|
|
{Command} {show debugging isis} {}
|
|
Print which ISIS debug level is activate.
|
|
|
|
ISIS Configuration Examples
|
|
===========================
|
|
|
|
A simple example, with MD5 authentication enabled:
|
|
|
|
::
|
|
|
|
!
|
|
interface eth0
|
|
ip router isis FOO
|
|
isis network point-to-point
|
|
isis circuit-type level-2-only
|
|
!
|
|
router isis FOO
|
|
net 47.0023.0000.0000.0000.0000.0000.0000.1900.0004.00
|
|
metric-style wide
|
|
is-type level-2-only
|
|
|
|
|
|
A Traffic Engineering configuration, with Inter-ASv2 support.
|
|
|
|
- First, the 'zebra.conf' part:
|
|
|
|
::
|
|
|
|
hostname HOSTNAME
|
|
password PASSWORD
|
|
log file /var/log/zebra.log
|
|
!
|
|
interface eth0
|
|
ip address 10.2.2.2/24
|
|
mpls-te on
|
|
mpls-te link metric 10
|
|
mpls-te link max-bw 1.25e+06
|
|
mpls-te link max-rsv-bw 1.25e+06
|
|
mpls-te link unrsv-bw 0 1.25e+06
|
|
mpls-te link unrsv-bw 1 1.25e+06
|
|
mpls-te link unrsv-bw 2 1.25e+06
|
|
mpls-te link unrsv-bw 3 1.25e+06
|
|
mpls-te link unrsv-bw 4 1.25e+06
|
|
mpls-te link unrsv-bw 5 1.25e+06
|
|
mpls-te link unrsv-bw 6 1.25e+06
|
|
mpls-te link unrsv-bw 7 1.25e+06
|
|
mpls-te link rsc-clsclr 0xab
|
|
!
|
|
interface eth1
|
|
ip address 10.1.1.1/24
|
|
mpls-te on
|
|
mpls-te link metric 10
|
|
mpls-te link max-bw 1.25e+06
|
|
mpls-te link max-rsv-bw 1.25e+06
|
|
mpls-te link unrsv-bw 0 1.25e+06
|
|
mpls-te link unrsv-bw 1 1.25e+06
|
|
mpls-te link unrsv-bw 2 1.25e+06
|
|
mpls-te link unrsv-bw 3 1.25e+06
|
|
mpls-te link unrsv-bw 4 1.25e+06
|
|
mpls-te link unrsv-bw 5 1.25e+06
|
|
mpls-te link unrsv-bw 6 1.25e+06
|
|
mpls-te link unrsv-bw 7 1.25e+06
|
|
mpls-te link rsc-clsclr 0xab
|
|
mpls-te neighbor 10.1.1.2 as 65000
|
|
|
|
|
|
- Then the 'isisd.conf' itself:
|
|
|
|
::
|
|
|
|
hostname HOSTNAME
|
|
password PASSWORD
|
|
log file /var/log/isisd.log
|
|
!
|
|
!
|
|
interface eth0
|
|
ip router isis FOO
|
|
!
|
|
interface eth1
|
|
ip router isis FOO
|
|
!
|
|
!
|
|
router isis FOO
|
|
isis net 47.0023.0000.0000.0000.0000.0000.0000.1900.0004.00
|
|
mpls-te on
|
|
mpls-te router-address 10.1.1.1
|
|
!
|
|
line vty
|
|
|
|
|