Q: what is the prerequisite for vpls configuration – Panasonic NN46240-710 User Manual
Page 178
Attention! The text in this document has been recognized automatically. To view the original document, you can use the "Original mode".
Nortel Secure Router 8000 Series
Troubleshooting - VPN___________
5 VPLS troubleshooting
Q: The LSP token is inconsistent with the token of the current tunnel in the VPLS
MID table. Why does this happen?
A: The LSP token refers to the token value of the PW in the multicast mnformation description
(MID) table, and cannot be compared with the tunnel value.
Q: What is the relationship between the site, range, and offset in BGP mode?
A: Site refers to the label block sent to a certain peer. The remote label of the local peer must fall
in this label block. For example, the label block received from the remote is 1000/10/0. If the
value of the local site is 5, the remote label of the local is 1005 for the remote.
Range is the sum of VPN sites connected by a VPLS.
Offset defines whether the label block base is counted as a label. Continue to use the previous
example. If the label block is 1000/10/1, the remote label is calculated on the base of 1000.
Therefore, the remote label of the local is 1001.
Q: What is the prerequisite for VPLS configuration?
A: Enable MPLS Layer 2 VPN before you configure VPLS.
Q: The display vsi remote bgp command can display the remote label. The
display bgp vpls all command can also display the remote label. The display bgp
vpls al command displays more information. What is the difference between
these two commands?
A: The display vsi remote bgp command displays the labels that you select. The display
contains both the local label information and the remote label information.
The display bgp vpls all command displays all the labels received by BGP from the remote.
The display contains only the remote label information.
Therefore, the latter displays more information. After receiving labels from the remote, BGP
chooses the best label and sends it to the VPLS module.
Q: When do I need to configure the mpls ldp remote peer command?
A: Generally, it is not necessary to configure the LDP remote peer. When PEs connect indirectly,
you must configure the mpls ldp remote peer command.
In the case of interoperating with the device from another vendor, configure the LDP remote
peer to accept the difference in the implementation mechanism.
Issue 5.3 (30 March 2009)
Nortel Networks Inc.
5-19