I'm having trouble getting EoMPLS to work from a ME3750 to a 7201. I
have some signaling but the VC just won't come up. The basic layout is
a switchport on the ME3750; the xconnect is in the SVI associated with
that switchport on the ME3750. The ME3750's P-facing interfaces are
MPLS enabled. The 7600 core is MPLS enabled. The 7201 dual-homes to
both core 7600s. The 7201's interfaces are MPLS enabled. I'm trying to
terminate the xconnect on a sub-int of an onboard interface that's
facing a 4948. I have a laptop on the ME3750 and I'm mapping an access
int on the 4948 in the correct VLAN back across another network to my
office (so I don't have to sit in a noisy head-end).
Here's the ME3750's relevant config:
no mpls traffic-eng auto-bw timers frequency 0
mpls label protocol ldp
mpls ldp graceful-restart
mpls ldp router-id Loopback0 force
!
vlan 130
name vlan0130.cox-ptp-EOMPLS
!
interface FastEthernet1/0/3
description TO Cox F.7 - 10Mbps Kan-Ed
switchport access vlan 130
switchport mode dot1q-tunnel
no keepalive
no cdp enable
spanning-tree portfast
spanning-tree bpdufilter enable
!
interface GigabitEthernet1/1/1
description TO 7613-1.clr Gi1/11
no switchport
ip address
ip router isis
mpls label protocol ldp
mpls ip
clns mtu 1496
isis circuit-type level-2-only
isis network point-to-point
isis metric 100
isis authentication mode md5
isis authentication key-chain ISIS-AUTH
isis bfd
!
interface Vlan130
description EoMPLS VC 130 to 7201-1.clr Gi0/2.130
no ip address
xconnect aaa.bbb.ccc.ddd 130 encapsulation mpls
And here's the 7201's relevant config:
mpls label protocol ldp
mpls ldp graceful-restart
mpls ldp router-id Loopback0 force
!
interface GigabitEthernet0/2
description TO 4948-1.clr Gi1/45
mtu 9000
no ip address
duplex auto
speed auto
negotiation auto
!
interface GigabitEthernet0/2.130
description EoMPLS TO me3750-1.dc Vl130 (Fa1/0/3) - 10Mbps PtP
encapsulation dot1Q 130
xconnect 10.64.0.37 130 encapsulation mpls
I'll skip the 4948 config but I'll say that vl130 is permitted on
Gi1/45, it has been created and it was assigned to my test access
interface. None of the other VLANs served from sub-ints are having trouble.
When I bring up the xconnect on the me3750 here's what it logs:
000181: Jan 17 18:38:31.914 CST: AToM LDP [10.64.0.43]: Sending label
mapping msg
000182: Jan 17 18:38:31.914 CST: AToM LDP [10.64.0.43]: Sending label
mapping msg vc type 4, cbit 0, vc id 130, group id 0, vc label 231,
status 0x00000000/0x00000000, mtu 1500, peer vlan id 0 , vc handle
0x18000001
Here's what I get on the 7201 when I unshut the sub-int:
003629: Jan 17 18:39:26.401 CST: AToM LDP [10.64.0.37]: Sending label
mapping msg
vc type 4, cbit 0, vc id 130, group id 0, vc label 223, status 0, mtu
9000, peer vlan id 0
Something just jumped out at me. The MTUs are different. Would that
cause an issue? Gi0/2 on the 7201 is set to 9000 because hung off of
the 4948 is a set of backhaul radios that I will be doing MPLS across.
The customer-facing interface on the ME3750 is set to the default 1500.
Do the MTUs have to match up? I'm going to have to do some research.
Thanks
Justin
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