As one of my customer migrate partial network from Juniper to Huawei router a few monthes ago, during the migration, a problem occured which I think is valuable to share with you guys, so that some problems easy overlooked could be handled.
Before the migration, L2VPN is set up between two juniper devices. We replace one of the juniper device to a Huawei router, and the configuration is translated by our engineers manually, line by line.
After the configuring, all the test results is fine except the L2VPN. We checked the translated configuration with the original configuration, all is done.
As a last resort, we consult the Huawei engineer, they give the explanation as below:
In VLL setting up scenario, Huawei using PWE3 mode, the PWE3 LDP packets carries extra TLV than the martini LDP packet, which causing the juniper ignores these packets. To configure the dynamic VC signaling not to carry status information in VLL scenarios, run the mpls l2vpn default martini command.
After the changing, the L2VPN recovers from the fault. I checked the manual guide, found the explanation below:
Hope this could help you guys.
