3Com Switch 7700 Configuration Manual page 144

136 C 5: IP R
HAPTER OUTING
P O
ROTOCOL PERATION
If the level is not specified, it defaults to setting the CSNP packet broadcast interval
for Level-1.
By default, the CSNP packet is transmitted by an interface every 10 seconds.
Setting the LSP Packet Interval
LSP carries the link state records for propagation throughout the area.
Perform the following configuration in VLAN interface view..
Table 61 Setting the LSP Packet Interval
Operation
Set LSP packet interval on the interface,
measured in milliseconds.
Restore the default LSP packet interval on the
interface
By default, the minimum time between the consecutive transmissions of 2 LSPs is
33 milliseconds.
Setting the LSP Packet Retransmission Interval
If the local end does not receive a response within a period of time after it sends
an LSP packet over a p2p link, it assumes that the LSP packet has been lost or
dropped. To guarantee transmission reliability, the local router will retransmit the
original LSP packet.
Perform the following configurations in VLAN interface view..
Table 62 Setting LSP Packet Retransmission Interval
Operation
Set the retransmission interval of the LSP
packet over p2p links
Restore the default retransmission interval of
the LSP packet over p2p links
By default, the LSP packet is transmitted every 5 seconds over the p2p link.
Setting the Hello Failure Interval
The IS-IS protocol maintains adjacency between routers by transmitting and
receiving Hello packets. If the local router does not continuously receive Hello
packets within the time interval transmitted by the peer, it considers the adjacent
router to be down.
Perform the following configurations in VLAN interface view..
Table 63 Setting the Hello Failure Interval on the Interface
Operation
Set the Hello failure interval on the interface
Restore the default Hello failure interval on
the interface
Command
isis timer lsp time
undo isis timer lsp
Command
isis timer retransmit seconds
undo isis timer retransmit
Command
isis timer dead seconds [ level-1 | level-2 ]
undo isis timer dead [ level-1 | level-2 ]