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e.hoehn
Beginner

on EHWIC-1GE-SFP-CU MPLS labled packets are not beeing processed

Hello all,

We have the problem that MPLS labled packets are not beeing processed on EHWIC-1GE-SFP-CU if L3PDU + Shim-Header exceeds 1500 bytes

When we move the config exactely to the onboard Interface Gi0/0 it works withoput any problems.

Connection like this:

(MPLS-Network) --- Cisco7301 Gi0/2.1202 --- (P2P-VPLS-Link) --- Gi0/0/0.1202  Cisco2921

Config like this:

Router#sh run | i ^mpls ldp|path-mtu

mpls ldp explicit-null

mpls ldp  graceful-restart

mpls ldp tcp pak-priority

mpls ldp session  protection

mpls ldp advertise-labels for acl-mpls-ldp-advertise

ip tcp  path-mtu-discovery

mpls ldp router-id Loopback0  force

Router#

Router#sh run int  GigabitEthernet0/0

Building configuration...

Current configuration :  179 bytes

!

interface GigabitEthernet0/0/0

mtu 1532

no ip  address

carrier-delay msec 500

duplex auto

speed auto

media-type  rj45

end

Router#sh run int GigabitEthernet0/0/0.1202

Building  configuration...

Current configuration : 511 bytes

!

interface  GigabitEthernet0/0/0.1202

description CPE Gi0/2.1202

bandwidth 10000

encapsulation  dot1Q 1202

ip address 192.168.1.1 255.255.255.252

no ip proxy-arp

ip  router isis

mpls traffic-eng tunnels

mpls traffic-eng  administrative-weight 9

mpls ip

bfd interval 300 min_rx 300 multiplier  3

isis network point-to-point

isis metric 10000

isis hello-interval  3

isis csnp-interval 10

ip rsvp  bandwidth

end

Router#

Thanks in advance !

Emanuel

1 REPLY 1
e.hoehn
Beginner

It is related to : CSCtr66487

Traffic issue beyond 1492 MTU size with MPLS L2VPN Xconnect config

The fix is in 152(2)T