Operation Manual – IPv4 Routing
H3C S3610&S5510 Series Ethernet Switches
Chapter 4 IS-IS Configuration
4-29
The router will discard a LSP with incorrect checksum. You can configure the router to
ignore the incorrect checksum, which means a LSP will be processed even with an
incorrect LSP checksum.
On the NBMA network, the router will flood a new LSP received from an interface to
other interfaces. This can cause the LSP reflooding on the high connectivity networks.
To avoid this problem, you can make a mesh group of interfaces. The interface in this
group will only flood the new LSP to interfaces outside the mesh group.
Follow these steps to configure the LSP parameters:
To do…
Use the command…
Remarks
Enter system view
system-view
––
Enter IS-IS view
isis
[
process-id
]
[
vpn-instance
vpn-instance-name
]
––
Specify a LSP refresh
interval
timer lsp-refresh seconds
Optional
900 seconds by
default
Specify the maximum LSP
aging time
timer lsp-max-age seconds
Optional
1200 seconds by
default
Specify LSP generation
interval
timer lsp-generation
maximum-interval
[
initial-interval
[
incremental-interval
] ]
[
level-1
|
level-2
]
Optional
2 seconds by
default
Enable the LSP flash
flooding function
flash-flood
[
flood-count
flooding-count
|
max-timer-interval
flooding-interval
| [
level-1 |
level-2
] ] *
Optional
Not enabled by
default
Specify the maximum size of
the originated Level-1 or
Level-2 LSP
lsp-length originate size
[
level-1
|
level-2
]
Optional
Both are 1497 bytes
by default
Specify the maximum size of
the received Level-1 or
Level-2 LSP
lsp-length receive size
Optional
Both are 1497 bytes
by default
Enable LSP fragment
extension
lsp-fragments-extend
[
level-1
|
level-2
|
level-1-2
]
[
mode-1
|
mode-2
]
Optional
Disabled by default
Create a virtual system
virtual-system
virtual-system-id
Optional
Not created by
default
Return to system view
quit
––
