Manual:EoMPLS vs Cisco
Summary
This article describes the basic setup of Point-to-Point EoMPLS with Cisco routers. In this example IOS 15.1 was used, configuration in older versions may differ.
Configuration
Consider network setup as ilustrated below:
We will be setting up the layer 2 connection between the CE and PE routers as well as the MPLS and EoMPLS between PE routers. The layer 2 link between the CE and PE routers will be an Ethernet circuit.
Set up IP connectivity, OSPF and LDP
- CE1:
/ip address add address=192.168.111.1/24 interface=ether1
- CE2:
/ip address add address=192.168.111.2/24 interface=ether2
- PE1 (RouterOS):
/interface bridge add name=loopback0 /ip address add address=10.255.111.244/32 interface=loopback0 add address=10.5.111.244/24 interface=ether1 /mpls ldp set enabled=yes lsr-id=10.255.111.244 transport-address=10.255.111.244 /mpls ldp interface add interface=ether1 /routing ospf network add area=backbone network=10.255.111.111/32 add area=backbone network=10.5.111.0/24
- PE2 (IOS):
mpls label protocol ldp ! interface Loopback0 ip address 10.255.111.111 255.255.255.255 ! interface GigabitEthernet5/1 ip address 10.5.111.111 255.255.255.0 mpls ip mpls label protocol ldp ! router ospf 1 redistribute connected network 10.5.111.0 0.0.0.255 area 0 network 10.255.111.111 0.0.0.0 area 0 !
Configure EoMPLS tunnel
- PE1 (RouterOS):
/interface bridge
add name=vpn
/interface vpls
add cisco-style=yes cisco-style-id=111 disabled=no l2mtu=1500 name=cisco-eompls \
remote-peer=10.255.111.111 use-control-word=yes
/interface bridge port
add interface=ether2 bridge=vpn
add interface=cisco-eompls bridge=vpn
- PE2 (IOS):
pseudowire-class l2vpn encapsulation mpls control-word ! interface GigabitEthernet5/2 no ip address xconnect 10.255.111.244 111 pw-class l2vpn mtu 1500 !
Adjust MTUs
- PE1 (RouterOS):
/mpls interface set [find interface=all ] mpls-mtu=1526
- PE2 (IOS):
interface GigabitEthernet5/1 mtu 1526 ip mtu 1500 mpls mtu 1526 !
Verify Tunnel Operation
- PE1 (RouterOS):
[admin@RouterOS] /interface vpls> monitor 0
remote-label: 19
local-label: 21
remote-status:
transport: 10.255.111.111/32
transport-nexthop: 10.5.111.111
imposed-labels: 19
- PE2 (IOS):
C7606#show mpls l2transport vc Local intf Local circuit Dest address VC ID Status ------------- -------------------------- --------------- ---------- ---------- Gi5/2 Ethernet 10.255.111.244 111 UP
For more detailed output:
C7606#show mpls l2transport vc detail
Local interface: Gi5/2 up, line protocol up, Ethernet up
Destination address: 10.255.111.244, VC ID: 111, VC status: up
Output interface: Gi5/1, imposed label stack {21}
Preferred path: not configured
Default path: active
Next hop: 10.5.111.244
Create time: 2d21h, last status change time: 01:36:12
Signaling protocol: LDP, peer 10.255.111.244:0 up
Targeted Hello: 10.255.111.111(LDP Id) -> 10.255.111.244, LDP is UP
Status TLV support (local/remote) : enabled/not supported
LDP route watch : enabled
Label/status state machine : established, LruRru
Last local dataplane status rcvd: No fault
Last local SSS circuit status rcvd: No fault
Last local SSS circuit status sent: No fault
Last local LDP TLV status sent: No fault
Last remote LDP TLV status rcvd: Not sent
Last remote LDP ADJ status rcvd: No fault
MPLS VC labels: local 19, remote 21
Group ID: local 0, remote 0
MTU: local 1500, remote 1500
Remote interface description:
Sequencing: receive disabled, send disabled
Control Word: On
VC statistics:
transit packet totals: receive 6073, send 5394
transit byte totals: receive 1309806, send 758021
transit packet drops: receive 0, seq error 0, send 18