3com S7906E Instruccion De Instalación

 

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A bypass tunnel cannot be used for services like VPN at the same time. 

Before configuring FRR, do the following: 

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Configure IGP, ensuring that all LSRs are reachable 

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Configure MPLS basic capabilities  

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Configure MPLS TE basic capabilities 

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Establish an MPLS TE tunnel with RSVP-TE 

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Set up primary LSPs 

Configuring FRR involves these tasks: 

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Configuring a bypass tunnel on its PLR 

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Follow these steps to enable FRR on the headend of a primary LSP: 

Enter system view 

–– 

Enter tunnel interface view of 
the primary LSP 

 

 

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Enable FRR 

Required 
Disabled by default 

Submit current tunnel 
configuration 

Required 

 

After a tunnel is specified to protect an interface, its corresponding LSP becomes a bypass LSP. Setting 
up a bypass LSP must be manually performed on its headend, also called point of local repair (PLR), 
which must be a part of the primary LSP but must not be the tail of the primary LSP.  

Configuring a bypass LSP is the same as configuring a common LSP except that you cannot configure 
the FRR attribute on a bypass LSP. In other words, an LSP cannot be both primary and bypass. In 
addition, nested LSP protection is not allowed.  

When specifying a bypass tunnel for an interface, make sure that: 

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The bypass tunnel is up. 

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The protected interface is not its own outgoing interface. 

Up to three bypass tunnels can be specified for a protected interface. The best-fit algorithm is used to 
determine which of them should be used in case failure occurs.  

Your device has restriction on links that use the same bypass tunnel so that their total bandwidth does 
not exceeds a specified value.