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doc: add config sample for pim-evpn

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Sample l2-vni config via ifupdown2 -
auto vx-10100
iface vx-10100
	vxlan-id 10100
	bridge-access 100
	vxlan-local-tunnelip 27.0.0.11
	vxlan-mcastgrp 239.1.1.100 >>>>>>>>>.

Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Anuradha Karuppiah 2019-04-08 15:22:23 -07:00
parent 7b227dafe6
commit 745fc7a5ec
2 changed files with 24 additions and 1 deletions
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2
doc/user/overview.rst
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@ -228,6 +228,8 @@ features with system dependencies are included here.
+-----------------------------------+----------------+--------------+------------+------------+------------+
| ASM (Any Source) | :mark:`Y` | :mark:`N` | :mark:`N` | :mark:`N` | :mark:`N` |
+-----------------------------------+----------------+--------------+------------+------------+------------+
| EVPN BUM Forwarding | :mark:`≥5.0` | :mark:`N` | :mark:`N` | :mark:`N` | :mark:`N` |
+-----------------------------------+----------------+--------------+------------+------------+------------+
The indicators have the following semantics:

23
doc/user/pim.rst
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@ -8,7 +8,8 @@ PIM -- Protocol Independent Multicast
*pimd* supports pim-sm as well as igmp v2 and v3. pim is
vrf aware and can work within the context of vrf's in order to
do S,G mrouting.
do S,G mrouting. Additionally PIM can be used in the EVPN underlay
network for optimizing forwarding of overlay BUM traffic.
.. _starting-and-stopping-pimd:
@ -495,3 +496,23 @@ Clear commands reset various variables.
.. clicmd:: clear ip pim oil
Rescan PIM OIL (output interface list).
PIM EVPN configuration
======================
To use PIM in the underlay for overlay BUM forwarding associate a
multicast group with the L2 VNI. The actual configuration is based
on your distribution. Here is an ifupdown2 example -
auto vx-10100
iface vx-10100
vxlan-id 10100
bridge-access 100
vxlan-local-tunnelip 27.0.0.11
vxlan-mcastgrp 239.1.1.100 >>>>>>>>
PIM will see the vxlan configuration and auto configure state to properly
forward BUM traffic.
PIM also needs to be configured in the underlay to allow the BUM MDT to
be setup. This is existing PIM configuration -
- Enable pim on the underlay L3 interface via the "ip pim" command.
- Configure RPs for the BUM multicast group range.
- Ensure the PIM is enabled on the lo of the VTEPs and the RP.