Hierarchical vpls – Panasonic NN46240-710 User Manual
Page 164
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Nortel Secure Router 8000 Series
Troubleshooting - VPN___________
5 VPLS troubleshooting
This networking simulates the three constitutional parts of a VPLS networking: PE, provider
router (P), and CE.
This solution also meets the conditions of making a VPLS VSI Up: tunnel, AC access, and PW.
Hierarchical VPLS
Figure 5-2
Hierarchical VPLS Networking
PE1
Core layer''
Convergence
layer
Convergence
layer i
CE1
CE2
The traditional LDP signaling requires that:
•
PEs fully connect in a VPLS.
•
Each PE is specified with a peer.
The configuration is quite arduous, and requires higher performance of individual PEs.
To rectify this problem, you can use hierarchical VPLS. The PEs in the network core still fully
connect. A PE, as the user convergence device, only needs to be specified as a Underlayer PE
(UPE) on its directly connected Superstratum PE (SPE).
Issue 5.3 (30 March 2009)
Nortel Networks Inc.
5-5