Configuring Pseudowire Headend: Example - Cisco CRS Configuration Manual
Ios xr virtual private network
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Implementing Multipoint Layer 2 Services
VPLS ID - 120:100
Route Target - 12:12
Configuring Pseudowire Headend: Example
This section provides an example of pseudowire headend configuration.
Figure 23: PWHE Configuration Example
Consider the topology in the above figure.
1 There are many customer edge routers (CEs) connected to a A-PE (each CE is connected using 1 link).
2 There are two P routers between A-PE an S-PE in the access network.
3 S-PE is connected by two links to P1—links L1 and L2 (on two separate linecards on P1 and S-PE); for
example, Gig0/1/0/0 and Gig0/2/0/0 respectively.
4 S-PE is connected by two links to P2—L3 and L4 (on two separate linecards on P2 and S-PE); for example,
Gig0/1/0/1 and Gig0/2/0/1 respectively.
5 For each CE-APE link, a xconnect (AC-PW) is configured on the A-PE. The PWs are connected to S-PE;
some PWs are connected to [L1 (Gig0/1/0/0), L4 (Gig0/2/0/1)] and others through [L2 (Gig0/1/0/1), L3
(Gig0/2/0/0)].
6 A-PE uses router-id 100.100.100.100 for routing and PW signaling.
7 The two router-ids on S-PE used for PW signaling are 111.111.111.111 and 112.112.112.112 (for Rx
pin-down). 110.110.110.110 is the router-id assigned for routing.
CE Configuration
Consider two CEs connected using GigabitEthernet0/3/0/0 (CE1 and A-PE) and GigabitEthernet0/3/0/1 (CE2
and A-PE).
CE1
interface Gig0/3/0/0
ipv4 address 10.1.1.1/24
router static
address-family ipv4 unicast
Cisco IOS XR Virtual Private Network Configuration Guide for the Cisco CRS Router, Release 6.1.x
Configuring Pseudowire Headend: Example
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