 | Copyright © 2009, Juniper Networks, Inc. All rights reserved. Trademark Notice. | |
You can configure fast reroute for traffic engineered LSPs (LSPs carrying a single class of traffic). It is also possible to reserve bandwidth on the detour path for the class of traffic when fast reroute is enabled. The same class type number is used for both the traffic engineered LSP and its detour.
If you configure the router to reserve bandwidth for the detour path, a check is made to ensure that the link is capable of handling DiffServ-aware traffic engineering and for CoS capability before accepting it as a potential detour path. Unsupported links are not used.
You can configure the amount of bandwidth to reserve for detours using either the bandwidth statement or the bandwidth-percent statement. You can only configure one these statements at a time. If you do not configure either the bandwidth statement or the bandwidth-percent statement, the default setting is to not reserve bandwidth for the detour path (the bandwidth guarantee will be lost if traffic is switched to the detour).
When you configure the bandwidth statement, you can specify the specific amount of bandwidth (in bits per second [bps]) you want to reserve for the detour path. For information, see Configuring Fast Reroute.
When you configure the bandwidth-percent statement, the detour path bandwidth is computed by multiplying it to the bandwidth configured for the main traffic engineered LSP. For information on how to configure the bandwidth for a traffic engineered LSP, see Configuring a Traffic Engineered LSP.
To configure the percent of bandwidth used by the detour path based on the bandwidth of the protected path, include the bandwidth-percent statement:
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bandwidth-percent percentage;
You can include this statement at the following hierarchy levels:
| Copyright © 2009, Juniper Networks, Inc. All rights reserved. Trademark Notice. | |