The following figure shows how to configure dynamic MS-PWs for a VLL service between a set of 7210 SAS nodes. The network consists of two 7210 T-PEs and two 7210 SAS nodes in the role of S-PEs. Each 7210 SAS peers with its neighbor using LDP and BGP.
This example uses BGP to route dynamic MS-PWs and T-LDP to signal them. Therefore, each node must be configured to support the MS-PW address family under BGP, and BGP and LDP peerings must be established between the T-PEs/S-PEs. The appropriate BGP export policies must also be configured.
Finally, pseudowire routing must be configured on each node. This includes an S-PE address for every participating node, and one or more local prefixes on the T-PEs. MS-PW paths and static routes may also be configured. When this routing and signaling infrastructure is established, spoke-SDP FECs can be configured on each of the T-PEs.
The following is a sample configuration for T-PE1.
config
router
ldp
targeted-session
peer 10.20.1.5
exit
exit
policy-options
begin
policy-statement "exportMsPw"
entry 10
from
family ms-pw
exit
action accept
exit
exit
exit
commit
exit
bgp
family ms-pw
connect-retry 1
min-route-advertisement 1
export "exportMsPw"
rapid-withdrawal
group "ebgp"
neighbor 10.20.1.5
multihop 255
peer-as 200
exit
exit
exit
config
service
pw-routing
spe-address 3:10.20.1.3
local-prefix 3:10.20.1.3 create
exit
path "path1_to_F" create
hop 1 10.20.1.5
hop 2 10.20.1.2
no shutdown
exit
exit
epipe 1 customer 1 vpn 1 create
description "Default epipe
description for service id 1"
service-mtu 1400
service-name "XYZ Epipe 1"
sap 2/1/1:1 create
exit
spoke-sdp-fec 1 fec 129 aii-type 2 create
retry-timer 10
retry-count 10
saii-type2 3:10.20.1.3:1
taii-type2 6:10.20.1.6:1
no shutdown
exit
no shutdown
exit
The following is a sample configuration for T-PE2.
config
router
ldp
targeted-session
peer 10.20.1.2
exit
exit
…
policy-options
begin
policy-statement "exportMsPw"
entry 10
from
family ms-pw
exit
action accept
exit
exit
exit
commit
exit
bgp
family ms-pw
connect-retry 1
min-route-advertisement 1
export "exportMsPw"
rapid-withdrawal
group "ebgp"
neighbor 10.20.1.2
multihop 255
peer-as 300
exit
exit
exit
config
service
pw-routing
spe-address 6:10.20.1.6
local-prefix 6:10.20.1.6 create
exit
path "path1_to_F" create
hop 1 10.20.1.2
hop 2 10.20.1.5
no shutdown
exit
exit
epipe 1 customer 1 vpn 1 create
description "Default epipe
description for service id 1"
service-mtu 1400
service-name "XYZ Epipe 1"
sap 1/1/3:1 create
exit
spoke-sdp-fec 1 fec 129 aii-type 2 create
retry-timer 10
retry-count 10
saii-type2 6:10.20.1.6:1
taii-type2 3:10.20.1.3:1
no shutdown
exit
no shutdown
exit
The following is a sample configuration for S-PE1.
config
router
ldp
targeted-session
peer 10.20.1.3
exit
peer 10.20.1.2
exit
exit
…
bgp
family ms-pw
connect-retry 1
min-route-advertisement 1
rapid-withdrawal
group "ebgp"
neighbor 10.20.1.2
multihop 255
peer-as 300
exit
neighbor 10.20.1.3
multihop 255
peer-as 100
exit
exit
exit
service
pw-routing
spe-address 5:10.20.1.5
exit
The following is a sample configuration for S-PE2.
config
router
ldp
targeted-session
peer 10.20.1.5
exit
peer 10.20.1.6
exit
exit
…
bgp
family ms-pw
connect-retry 1
min-route-advertisement 1
rapid-withdrawal
group "ebgp"
neighbor 10.20.1.5
multihop 255
peer-as 200
exit
neighbor 10.20.1.6
multihop 255
peer-as 400
exit
exit
exit
service
pw-routing
spe-address 2:10.20.1.2
exit