neighbor 10.10.10.10 pw-id 18100005
!
neighbor 20.20.20.20 pw-id 28100005
!
neighbor 70.70.70.70 pw-id 78100005
!
EVPN Anycast Gateway All-Active Static Pseudowire
The EVPN Anycast Gateway All-active Static Pseudowire (PW) feature enables all-active multi-homing
support for static PWs. When static PWs are configured, it overrides the default behavior of single-active,
and the node becomes all-active per flow (AApF).
Configure EVPN Anycast All-active Static Pseudowire
Consider a traffic flow from CE1 to CE2. CE1 sends the traffic to PE1 or PE2. PE1 and PE2 are connected
to CE1 through static PW. CE1 sends the traffic to the PEs using the same anycast IP address, and uses IGP
ECMP for load balancing. Anycast PWs are static. You can configure an ESI per static PW. PE1 and PE2
forward the traffic based on the type of traffic.
Consider PE1 to be a DF and PE2 a non-DF. When a Broadcast, Unknown unicast and Multicast (BUM)
traffic is sent from CE1 to PE1 or PE2. PE1 sends traffic to all other nodes towards the core side, including
PE2. However, PE2 drops the traffic as it a non-DF. Similarly, PE2 sends traffic to all other nodes towards
the core side, including PE1. However, PE1 drops the traffic as it is coming from a non-DF node. PE1 or PE2
sends the traffic to CE2 through MPLS core.
When BUM traffic is sent from the core side, that is from PE3 or PE4 to CE1. PE3 or PE4 sends the traffic
to PE1 and PE2. PE1 forwards the traffic to CE1. PE2 drops the packets as it is a non-DF.
When unicast traffic is sent from CE1 to PE1 and PE2, both PE1 and PE2 forward the traffic to the core.
When unicast traffic is sent from PE3 or PE4 to CE1, both PE1 and PE2 send the traffic to CE1.
Configure Static PW
This section describes how you can configure static PW.
/* Configure PE1 */
RP/0/RSP0/CPU0:router# configure
RP/0/RSP0/CPU0:router(config)# l2vpn
RP/0/RSP0/CPU0:router(config-l2vpn)# bridge group bg1
RP/0/RSP0/CPU0:router(config-l2vpn-bg)# bridge-domain bd1
RP/0/RSP0/CPU0:router(config-bg-bd)# neighbor 10.0.0.1 pw-id 17300001
RP/0/RSP0/CPU0:router(config-bg-bd-pw)# mpls static label local 1000 remote 2000
/* Configure EVPN */
L2VPN and Ethernet Services Configuration Guide for Cisco ASR 9000 Series Routers, IOS XR Release 6.3.x
547
EVPN Features
EVPN Anycast Gateway All-Active Static Pseudowire
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