No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

FAQ -Why VPLS Kompella does not work between NE40E and J vendor device?

Publication Date:  2014-05-19 Views:  19 Downloads:  0
Issue Description
VPLS Kompella does not work between NE40 and J vendor router. Topology is like below:

NE40E 172.16.0.3 → J(RR) 172.17.100.4 → NE40E 172.17.100.3

 

 

Handling Process

NE40E 172.17.100.3 is alarming, when is getting BGP Update from J device,
we can see from debug
:

Feb 18 2014 11:50:15.490.1+04:00 NE40E-N RM/6/RMDEBUG:

BGP: peer 172.17.100.4 (SockID 96) reads 99 bytes on socket 96.

 

Feb 18 2014 11:50:15.490.2+04:00 NE40E-N RM/6/RMDEBUG:

        BGP: Received from 172.17.100.4 (AS Number: 100)

        (Displaying bytes from 1 to 99)

        FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

        00 63 02 00 00 00 4C 40 01 01 00 40 02 06 02 01

        00 00 79 9D 40 05 04 00 00 00 64 C0 10 10 00 02

        FD E7 00 00 00 02 80 0A 04 00 05 DC 00 00 90 0E

        00 21 00 19 41 04 AC 10 00 03 00 00 16 00 01 AC

        10 00 03 00 02 00 03 00 01 00 0A 41 00 11 01 00

        0A 00 00

 

Feb 18 2014 11:50:15.490.3+04:00 NE40E-N RM/6/RMDEBUG:

BGP.VPLS: ParseReachNlri: PeerID=172.17.100.4, NextHop=172.16.0.3, Length=24

Feb 18 2014 11:50:15.490.4+04:00 NE40E-N RM/6/RMDEBUG:

BGP.VPLS: VPLS ReachNLRI from peer 172.17.100.4 is ignored because the length 22 is not correct

Root Cause

  The equipment of some manufacturers cannot perform the MTU matching check in the VSI. When a Huawei device communicates with a non-Huawei device in Kompella mode, you need to run the ignore-mtu-match command on the Huawei data communication device to ignore the MTU matching check. This ensures that the VC link is Up.

In addition, after the ignore-mtu-match command is used, the VPLS packet sent by the device adopts the standard encapsulation type 19.

Solution
Solution: The vpls bgp encapsulation { ethernet | vlan } and ignore-mtu-match commands must be used together on Huawei devices so that Huawei devices can communicate with non-Huawei devices

END