Ignore-Lsp-Checksum-Error - 3Com 8807 Command Reference Manual

Integrated IS-IS Configuration Commands 473
the LSP generated during the last run may still exist in the LSP database of other
routers in the network.
Because LSP fragment sequence numbers are initialized when a router is reset, the
LSP copy stored in the other routers in the network seems newer than the new
LSPs generated after this router is restarted. This will cause temporary black-holes
in the network until the router generates its own LSPs in normal update process
and delivers these LSPs in the highest sequence number.
When this router is restarted, if neighbors of this router suppress sending
adjacency relations to this router until this router delivers the updated LSP,
black-holes can be avoided.
By default, the SA bit is not suppressed.
Example
# Set to suppress the SA bit in the restart TLV of the ISIS process 1.
<SW8800> system-view
[SW8800] isis 1
[3Com-isis-1] graceful-restart suppress-sa
ignore-lsp-checksum-err Syntax
or

ignore-lsp-checksum-error

undo ignore-lsp-checksum-error
View
IS-IS view
Parameter
None
Description
Use the ignore-lsp-checksum-error command to configure the IS-IS to discard
LSPs with checksum errors.
Use the undo ignore-lsp-checksum-error command to configure the IS-IS to
ignore the checksum error of LSP.
By default, the checksum error of LSP is 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, even if the checksum in
the packet is found not in consistent with the calculated result, the LSP is
processed as normal. However, after not ignoring LSP checksum error is set with
the ignore-lsp-checksum-error command, the LSP packet will be discarded
silently if the checksum error is found.
Example
# Discard the LSPs with checksum errors.
[3Com-isis] ignore-lsp-checksum-error