Panasonic NN46240-710 - Manual (Page 177)

5 VPLS troubleshooting
Nortel Secure Router 8000 Series
_________ Troubleshooting - VPN
Q: Different types of AC interfaces are bound at both ends. Does this affect the
status of a VSI?
A: No, it will not. At present, the Secure Router 8000 Series supports only two types of AC
interfaces:
• Ethernet
• VLAN
Q: Different types of AC interfaces are bound at both ends. Does this affect the
interworking?
A: No, it will not.
Q: Different MAC address learning modes are configured at both ends. Does this
affect the status of the VSI?
A: No, it will not. The status of the VSI is affected only when the MTU and the encapsulation
type are not consistent at both ends. The MAC address learning mode, however, affects the
packet forwarding.
Q: Should the status of a VIS be Up only after an AC is bound on the PE at both
ends?
A: No, this condition is not necessary.
When you configure Hierarchical VPLS (HVPLS), you need to add the keyword upe to specify
a peer. Then, the peer can be regarded as an AC. When a peer is specified as a UPE, as long as
the corresponding VSI of the peer is Up, the PW can be Up even if the corresponding interface
of the SPE is not bound with the VSI.
Q: Is it possible that only the same VSI on a peer PE is Up but it is Down on the
other peer PEs?
A: Yes, this situation is possible. If two or more peer PEs of a VSI are specified as UPEs, and if
the same VSI on one of the UPEs is Up, the VSI on other peer PEs can be Down.
Q: Should PEs fully connect in LDP mode?
A: As SPE, PEs must fully connect. As UPE, PEs do not necessarily fully connect.
Q: Should a VSI be UP only when the VSI IDs are consistent at both ends?
A: No, not always. When you configure a peer, you can use the negotiation-vc-id command to
configure the negotiation VSI ID. If both ends use it, interworking can also be implemented.
Q: Does negotiation-vc-id have a connection with UPE?
A: No, it does not. negotiation is used only as a parameter.
5-18 Nortel Networks Inc. Issue 5.3 (30 March2009)