Disabling An Interface From Sending/Receiving Is-Is Hello Packets; Configuring Lsp Parameters - 3Com MSR 50 Series Configuration Manual

900 C 57: IS-IS C
HAPTER
Disabling an Interface
from Sending/Receiving
IS-IS Hello Packets
Configuring LSP
Parameters
ONFIGURATION
On a point-to-point link, if there is no response to an LSP sent by the local
■
router within the specified retransmission interval, the LSP is considered lost,
and the same LSP will be retransmitted. On broadcast links, responses to the
sent LSPs are not required.
The interval between hello packets sent by the DIS is 1/3 the hello interval set
■
by the isis timer hello command.
Follow these steps to disable an interface from sending hello packets:
To do...
Enter system view
Enter interface view
Disable the interface from
sending and receiving hello
packets
An IS-IS router periodically advertises all the local LSPs to maintain the LSP
synchronization in the entire area.
An LSP is given an aging time when generated by the router. When the LSP is
received by another router, its aging time begins to decrease. If the receiving
router does not get the update for the LSP within the aging time, the LSP will be
deleted from the LSDB.
The router will discard an LSP with incorrect checksum. You can configure the
router to ignore the incorrect checksum, which means an 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...
Enter system view
Enter IS-IS view
Specify an LSP refresh interval timer lsp-refresh seconds
Specify the maximum LSP
aging time
Specify LSP generation
interval
Use the command...
system-view
interface interface-type
interface-number
isis silent
Use the command...
system-view
isis [ process-id ]
[ vpn-instance
vpn-instance-name ]
timer lsp-max-age seconds
timer lsp-generation
maximum-interval
[ initial-interval
[ incremental-interval ] ]
[ level-1 | level-2 ]
Remarks
--
--
Required
Not disabled by default
Remarks
--
--
Optional
900 seconds by default
Optional
1200 seconds by default
Optional
2 seconds by default