3Com Router 3031, Command Reference Manual

Page: 609 / 838

Integrated IS-IS Configuration Commands 609
Example
Filter the received routes by using acl 3.
[3Com-isis] filter-policy 3 import
ignore-lsp-checksum-err
or
Syntax
ignore-lsp-checksum-error
undo ignore-lsp-checksum-error
View
IS-IS view
Parameter
None
Description
Using the ignore-lsp-checksum-error command, you can configure the IS-IS to
ignore the checksum error of LSP. Using the undo ignore-lsp-checksum-error
command, you can configure the IS-IS not to ignore the checksum error of LSP.
By default, the checksum error of LSP is not ignored.
After receiving an LSP packet, the local IS-IS will calculate its checksum and
compares the result with the checksum in the LSP packet. This process is the
checksum authentication over the received LSP. By default, if the checksum in the
packet is found not in consistent with the calculated result, the LSP will be
discarded without being processed. Moreover, if ignoring checksum error is set
with the ignore-lsp-checksum-error command, the packet will be processed as a
normal one even if the checksum error is found.
Example
Configure to ignore the checksum error of LSP.
[3Com-isis] ignore-lsp-checksum-error
import-route
Syntax
import-route protocol [ cost value ] [ type { external | internal } ] [ level-1 ] [
level-1-2 ] [ level-2 ] [ route-policy route-policy-name ]
undo import-route protocol [ cost value ] [ type { external | internal } ] [ level-1 ] [
level-1-2 ] [ level-2 ] [ route-policy route-policy-name ]
View
IS-IS view
Parameter
■
protocol: Specifies source routing protocols which can be imported, including
direct, bgp, ospf, ospf-nssa , ospf-ase, rip and static at present.
■
cost value: Specifies the route cost of the imported route, ranging from 0 to
63.
■
level-1: Imports the route into Level-1 routing table.
■
level-2: Imports the route into Level-2 routing table.