3com MSR 20-20 참조 매뉴얼

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HAPTER

 74: IS-IS C

ONFIGURATION

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OMMANDS

An interface is not in any mesh group by default.

For an interface not in a mesh group, it follows the normal process to flood the 
received LSPs to other interfaces. For the NBMA network with high connectivity 
and multiple point-to-point links, this will cause repeated LSP flooding and 
bandwidth waste.

After an interface is added to a mesh group, it will only flood a received LSP to 
interfaces not belonging to the same mesh group.

When you add an interface to a mesh group or block the interface, make sure to 
retain some redundancy so that a link failure will not affect the normal LSP packet 
flooding.

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# Add the frame relay subinterface Serial2/1.1 to the mesh-group 3.

<Sysname> system-view

[Sysname] interface serial 2/1

[Sysname-Serial2/1] link-protocol fr

[Sysname-Serial2/1] quit

[Sysname] interface serial 2/1.1

[Sysname-Serial2/1.1] isis mesh-group 3 

Interface view

None

Use the isis peer-ip-ignore command to configure the PPP interface not to 
check peer IP address upon receiving Hello packets.

Use the undo isis peer-ip-ignore command to restore the default.

By default, the PPP interface checks the peer’s IP address upon receiving a hello 
packet.

An IS-IS PPP interface requires the sender of a hello packet must be on the same 
network segment with it. Otherwise, it discards the hello packet. You can use the 
isis peer-ip-ignore command to disable this restriction.

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On a router:

# Configure Serial2/0 not to check the peer’s IP address of received Hello packets.