isis timer lsp-retransmit
Function
The isis timer lsp-retransmit command configures the LSP retransmission interval over the P2P link.
The undo isis timer lsp-retransmit command restores the default setting.
By default, the interval for retransmitting LSPs over the P2P link is 5 seconds.
Parameters
| Parameter | Description | Value |
|---|---|---|
| retransmit-interval | Specifies the retransmission interval of LSPs. | The value is integer ranging from 1 to 300 seconds. By default, it is 5 seconds. |
Views
Ethernet interface view, Ethernet sub-interface view, Eth-Trunk interface view, Eth-Trunk sub-interface view, Tunnel interface view, Loopback interface view, Dialer interface view, VLANIF interface view, Virtual-Template interface view
Usage Guidelines
Usage Scenario
On a point-to-point network, devices at both ends of a link synchronize LSDBs with each other by flooding LSPs. The device at one end of the link sends an LSP. If the device at the other end receives this LSP, it replies with a PSNP. If the device that has sent an LSP does not receive a PSNP from the other end in a period of time, the device will retransmit the LSP.
The isis timer lsp-retransmit command is used to set an interval for retransmitting LSPs. Only the devices on a point-to-point network send PSNPs. Therefore, the isis timer lsp-retransmit command will take effect only when it is run on point-to-point interfaces.
Configuration Impact
After the isis timer lsp-retransmit command is run on a device, the device will wait retransmit-interval after having sent an LSP. If the device receives a PSNP from the other end, the device will not retransmit the LSP. Otherwise, the device will retransmit the LSP.
If a broadcast interface is emulated as a P2P interface through the isis circuit-type command or restored a P2P interface to the broadcast interface through the undo isis circuit-type command, the interval for retransmitting LSP packets on a P2P link is restored to the default value.