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Issue: After SPT switchover, do shut and no-shut the received connected
interface, traffic stops.
R2
| |
+ +
Client-----R1--------R3----Source
R2 is RP.
Root cause:
Client is sending join for G and Source is sending traffic for G.
Before SPT switchover, traffic flows R3-R2-R1, after SPT switchover,
traffic flows R3-R1. Now Check in R2, there will be 2 ifchannel gets
created. first is (*, G) ifchannel which gets created because of (*, G)
join received from R1, second is (S, G) ifchannel which gets created
because of (s,g,rpt) prune received from R1
Shut the receiver connected interface on R1, R1 will send a (*, G) prune
towards RP (R2). On receiving (*, G) prune, R2 deletes the (*, G) ifchannel.
(s,g) ifchannel with flag (s,g,rpt) set will be timeout after the prune timer
expires. Before this timer expires, do noshut the received connected inrterface
on R1. R1 will send a (*,G) join to R2(RP), So oil will be updated in (*, G),
but wont get updated in (s,g) since the flag (s,g,rpt) is set. So traffic flow
stops.
Fix: When (*, G) ifchannel is getting deleted because of (*, G) prune
received, as (*,G) prune indicates that the router no longer wishes
to receive shared tree traffic, so clear (S,G,RPT) flag on all the child (S,G)
ifchannel, which was created because of (S,G,RPT) prune received
Signed-off-by: Sarita Patra <saritap@vmware.com>
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|---|---|---|
| .. | ||
| .gitignore | ||
| AUTHORS | ||
| CAVEATS | ||
| COMMANDS | ||
| COPYING | ||
| DEBUG | ||
| LINUX_KERNEL_MROUTE_MFC | ||
| Makefile | ||
| mtracebis_netlink.c | ||
| mtracebis_netlink.h | ||
| mtracebis_routeget.c | ||
| mtracebis_routeget.h | ||
| mtracebis.c | ||
| pim_assert.c | ||
| pim_assert.h | ||
| pim_bfd.c | ||
| pim_bfd.h | ||
| pim_br.c | ||
| pim_br.h | ||
| pim_bsm.c | ||
| pim_bsm.h | ||
| pim_cmd.c | ||
| pim_cmd.h | ||
| pim_errors.c | ||
| pim_errors.h | ||
| pim_hello.c | ||
| pim_hello.h | ||
| pim_iface.c | ||
| pim_iface.h | ||
| pim_ifchannel.c | ||
| pim_ifchannel.h | ||
| pim_igmp_join.h | ||
| pim_igmp_mtrace.c | ||
| pim_igmp_mtrace.h | ||
| pim_igmp_stats.c | ||
| pim_igmp_stats.h | ||
| pim_igmp.c | ||
| pim_igmp.h | ||
| pim_igmpv2.c | ||
| pim_igmpv2.h | ||
| pim_igmpv3.c | ||
| pim_igmpv3.h | ||
| pim_instance.c | ||
| pim_instance.h | ||
| pim_int.c | ||
| pim_int.h | ||
| pim_join.c | ||
| pim_join.h | ||
| pim_jp_agg.c | ||
| pim_jp_agg.h | ||
| pim_macro.c | ||
| pim_macro.h | ||
| pim_main.c | ||
| pim_memory.c | ||
| pim_memory.h | ||
| pim_mlag.c | ||
| pim_mlag.h | ||
| pim_mroute.c | ||
| pim_mroute.h | ||
| pim_msdp_packet.c | ||
| pim_msdp_packet.h | ||
| pim_msdp_socket.c | ||
| pim_msdp_socket.h | ||
| pim_msdp.c | ||
| pim_msdp.h | ||
| pim_msg.c | ||
| pim_msg.h | ||
| pim_neighbor.c | ||
| pim_neighbor.h | ||
| pim_nht.c | ||
| pim_nht.h | ||
| pim_oil.c | ||
| pim_oil.h | ||
| pim_pim.c | ||
| pim_pim.h | ||
| pim_register.c | ||
| pim_register.h | ||
| pim_routemap.c | ||
| pim_rp.c | ||
| pim_rp.h | ||
| pim_rpf.c | ||
| pim_rpf.h | ||
| pim_signals.c | ||
| pim_signals.h | ||
| pim_sock.c | ||
| pim_sock.h | ||
| pim_ssm.c | ||
| pim_ssm.h | ||
| pim_ssmpingd.c | ||
| pim_ssmpingd.h | ||
| pim_static.c | ||
| pim_static.h | ||
| pim_str.c | ||
| pim_str.h | ||
| pim_time.c | ||
| pim_time.h | ||
| pim_tlv.c | ||
| pim_tlv.h | ||
| pim_upstream.c | ||
| pim_upstream.h | ||
| pim_util.c | ||
| pim_util.h | ||
| pim_version.c | ||
| pim_version.h | ||
| pim_vty.c | ||
| pim_vty.h | ||
| pim_vxlan_instance.h | ||
| pim_vxlan.c | ||
| pim_vxlan.h | ||
| pim_zebra.c | ||
| pim_zebra.h | ||
| pim_zlookup.c | ||
| pim_zlookup.h | ||
| pimd.c | ||
| pimd.conf.sample | ||
| pimd.h | ||
| README | ||
| subdir.am | ||
| test_igmpv3_join.c | ||
| TODO | ||
| TROUBLESHOOTING | ||
INTRODUCTION
qpimd aims to implement a PIM (Protocol Independent Multicast)
daemon for the FRR Routing Suite.
qpimd implements PIM-SM (Sparse Mode) of RFC 4601.
Additionally MSDP has been implemented.
In order to deliver end-to-end multicast routing control
plane, qpimd includes the router-side of IGMPv[2|3] (RFC 3376).
LICENSE
qpimd - pimd for FRR
Copyright (C) 2008 Everton da Silva Marques
qpimd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2,
or (at your option) any later version.
qpimd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public
License along with qpimd; see the file COPYING. If not, write
to the Free Software Foundation, Inc., 59 Temple Place - Suite
330, Boston, MA 02111-1307, USA.
HOME SITE
qpimd lives at:
https://github.com/freerangerouting/frr
PLATFORMS
qpimd has been tested with Debian Jessie.
REQUIREMENTS
qpimd requires FRR (2.0 or higher)
CONFIGURATION COMMANDS
See available commands in the file pimd/COMMANDS.
KNOWN CAVEATS
See list of known caveats in the file pimd/CAVEATS.
SUPPORT
Please post comments, questions, patches, bug reports at the
support site:
https://freerangerouting/frr
RELATED WORK
igmprt: An IGMPv3-router implementation
- http://www.loria.fr/~lahmadi/igmpv3-router.html
USC pimd: PIMv2-SM daemon
- http://netweb.usc.edu/pim/pimd (URL broken in 2008-12-23)
- http://packages.debian.org/source/sid/pimd (from Debian)
troglobit pimd: This is the original USC pimd from
http://netweb.usc.edu/pim/. In January 16, 2010 it was revived
with the intention to collect patches floating around in
Debian, Gentoo, Lintrack and other distribution repositories
and to provide a central point of collaboration.
- http://github.com/troglobit/pimd
zpimd: zpimd is not dependent of zebra or any other routing daemon
- ftp://robur.slu.se/pub/Routing/Zebra
- http://sunsite2.icm.edu.pl/pub/unix/routing/zpimd
mrd6: an IPv6 Multicast Router for Linux systems
- http://fivebits.net/proj/mrd6/
MBGP: Implementation of RFC 2858 for Quagga
- git://git.coplanar.net/~balajig/quagga
- http://www.gossamer-threads.com/lists/quagga/dev/18000
REFERENCES
IANA Protocol Independent Multicast (PIM) Parameters
http://www.iana.org/assignments/pim-parameters/pim-parameters.txt
Address Family Numbers
http://www.iana.org/assignments/address-family-numbers
-- END --