No UDP protocol thru L2tpv3 tunnel

[David Ritter]

I need to establish a L2tpv3 tunnel between a pair of 4321's connected via AT&T L2 ASE link.

I have no issues passing TCP traffic, but UDP traffic is rejected.

the ios XE ios is 3.14.00.s and the interface be:

interface GigabitEthernet0/0/1

description L2-L2TP-INT

no ip address

negotiation auto

xconnect 172.25.xx.xx 1 encapsulation l2tpv3 pw-class INET

any suggestions?

[Georg Pauwen]

Hello,

I think you need to configure 'ip protocol udp' under your pseudowire class...

[David Ritter]

ah too bad the only choice is
ip protocol l2tp or ip protocol uti.
and when you l2tp, nothing gets save when one writes mem..

[David Ritter]

existing cfg:
pseudowire-class INET
encapsulation l2tpv3
ip local interface GigabitEthernet0/0/0
ip pmtu
ip dfbit set

[David Ritter]

The problem was resolved to excessive fragmentation.

The MTU was raised to max and the problem was gone.

45mbps bidirectional on average tcp and udp.