3Com MSR 30, MSR 50 manual Isis peer-ip-ignore, Syntax isis peer-ip-ignore Undo isis peer-ip-ignore

1068 CHAPTER 74: IS-IS CONFIGURATION COMMANDS

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Examples

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.

■A mesh-group is only available for a point-to-point link interface.

■This command is not available in loopback interface view.

# 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

isis peer-ip-ignore

Syntax isis peer-ip-ignore

undo isis peer-ip-ignore

View Interface view

Parameters None

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

Use the undo isis peer-ip-ignorecommand 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-ignorecommand to disable this restriction.

Examples ■ On a router:

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