Hello,
We have working scenario with ME3750 to 7606 (subinterfaces on ES20 card - 20x1Gbps) SVI-based xconnect. Because of aggregation needs, we are trying to migrate to port-channel (only interfaces from the ES20 card) with subinterfaces to be the core-facing side. But it doesn't work. The xconnect gets UP, VC status is UP, but there is no Output interface and imposed label stack from the 7606 side. At the same time on the ME3750 there is chosen interface and imposed label stack. As far as I checked, this is possible on the 7600 from IOS 12.2(33)SRE - we are using IOS 12.2(33)SRE6
==ME3750==
interface Vlan1126
no ip address
xconnect 10.3.0.2 1126 encapsulation mpls
end
interface Vlan3203
ip address 10.7.14.131 255.255.255.192
ip ospf mtu-ignore
mpls mtu 1530
mpls label protocol ldp
mpls ip
end
interface GigabitEthernet1/1/2
switchport trunk allowed vlan 3203
switchport mode trunk
end
==7606==
interface Vlan1126
mtu 1998
ip address X.X.X.X 255.255.255.252
no ip proxy-arp
ip mtu 1500
xconnect 10.3.1.15 1126 encapsulation mpls
end
interface GigabitEthernet2/0/6.3203
encapsulation dot1Q 3203
ip address 10.7.14.129 255.255.255.192
ip ospf mtu-ignore
mpls ip
mpls label protocol ldp
end
--(which should be migrated to)--
interface Port-channel7.3203
encapsulation dot1Q 3203
ip address 10.7.14.129 255.255.255.192
ip ospf mtu-ignore
mpls ip
mpls label protocol ldp
end
--Output from 7606 in the working case (Gi2/0/6.3203)--
sh mpls l2transport vc 1126 detail
Local interface: Vl1126 up, line protocol up, Eth VLAN 1126 up
Destination address: 10.3.1.15, VC ID: 1126, VC status: up
Output interface: Gi2/0/6.3203, imposed label stack {484}
Preferred path: not configured
Default path: active
Next hop: 10.7.14.131
Create time: 01:02:02, last status change time: 00:00:02
Signaling protocol: LDP, peer 10.3.1.15:0 up
Targeted Hello: 10.3.0.2(LDP Id) -> 10.3.1.15, 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 2472, remote 484
Group ID: local 0, remote 0
MTU: local 1998, remote 1998
Remote interface description:
Sequencing: receive disabled, send disabled
Control Word: Off (configured: autosense)
VC statistics:
transit packet totals: receive 20, send 21
transit byte totals: receive 1474, send 1532
transit packet drops: receive 0, seq error 0, send 0
--Output from 7606 in the non-working case (Port-channel7.3203)--
sh mpls l2transport vc 1126 detail
Local interface: Vl1126 up, line protocol up, Eth VLAN 1126 up
Destination address: 10.3.1.15, VC ID: 1126, VC status: up
Output interface: none, imposed label stack {}
Preferred path: not configured
Default path: active
No adjacency
Create time: 01:01:06, last status change time: 00:02:05
Signaling protocol: LDP, peer 10.3.1.15:0 up
Targeted Hello: 10.3.0.2(LDP Id) -> 10.3.1.15, 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 2472, remote 484
Group ID: local 0, remote 0
MTU: local 1998, remote 1998
Remote interface description:
Sequencing: receive disabled, send disabled
Control Word: Off (configured: autosense)
VC statistics:
transit packet totals: receive 20, send 21
transit byte totals: receive 1474, send 1532
transit packet drops: receive 0, seq error 0, send 0
Mod Ports Card Type Model
--- ----- ---------------------------------------------------------- ------------------------
2 20 ESM20G 7600-ES20-GE3C
3 48 CEF720 48 port 10/100/1000mb Ethernet WS-X6748-GE-TX
4 8 CEF720 8 port 10GE with DFC WS-X6708-10GE
5 2 Route Switch Processor 720 (Active) RSP720-3C-GE
I hope someone could help :)
