3Com Switch 7750 Configuration Guide

342 CHAPTER 35: IS-IS CONFIGURATION
Configuring Overload
Tag
A failure of a router in an IS-IS domain will cause errors in the routing of the whole
domain. To avoid this, you can configure the overload for the routers.
When the overload tag is set, other routers will not ask the router to forward
packets.
Configuring to Discard
LSPs with Incorrect
Checksum
Checksum is performed on the LSPs received locally by IS-IS and compared with
that carried in the LSPs By default, the LSP will not be discarded even if its
checksum is inconsistent with that calculated. You can use the
ignore-lsp-checksum-error command to configure IS-IS to discard an LSP with
incorrect checksum.
Configuring to Log Peer
Changes
With peer state logging enabled, IS-IS peer state changes are output to the
console terminal.
Assigning an LSP
Refresh Time
All LSPs are sent periodically to synchronize the LSPs in an area.
Add an interface to a
mesh group
isis
mesh-group { mesh-group-numbe
r | mesh-blocked }
Optional
By default, LSPs are flooded on
interfaces normally.
Table 275 Add an interface to a mesh group
Operation Command Description
Table 276 Configure overload tag
Operation Command Description
Enter system view system-view -
Enter IS-IS view isis [ tag ] Required
Configure overload tag set-overload Optional
No overload tag is set by
default.
Table 277 Configure to discard LSPs with incorrect checksum
Operation Command Description
Enter system view system-view -
Enter IS-IS view isis [ tag ] Required
Configure to discard
LSPs with incorrect
checksum
ignore-lsp-checksum-error Optional
By default, LSP checksum error
is ignored.
Table 278 Enable peer change logging
Operation Command Description
Enter system view system-view -
Enter IS-IS view isis [ tag ] Required
Enable peer change
logging
log-peer-change Optional
By default, peer change
logging is disabled.