July 2002
Intermediate to advanced
608 pages
14h 52m
English
Content preview from Traffic Engineering with MPLS
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Advanced Protection Issues
The previous sections described how link and node protection work. This section covers some advanced FRR features that you can configure to make the protection you are using more effective. Here are the topics covered:
Multiple backup tunnels to the same MP
Backup bandwidth reservation
Backup tunnel selection
Promotion
Multiple Backup Tunnels
There are two types of multiple backup tunnels:
Multiple backup tunnels to the same MP
NHop versus NNHop backup tunnels
Multiple Backup Tunnels to the Same MP
Figure 7-17 shows a link that is protected by backup tunnel1 and backup tunnel2. This link carries two primary tunnels—tunnel1 and tunnel2.
Figure 7-17. Multiple Backup Tunnels to the Same MP
Suppose that the protected link—12008a→12008c ...
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