H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – IPv4 Routing
H3C S7500E Series Ethernet Switches Chapter 4 IS-IS Configuration
4-28
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 ] ––
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
––
Enter interface view
interface interface-type
interface-number
––