Setting Flooding Parameters Of Snps And Lsps - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing

7.16.3 Setting Flooding Parameters of SNPs and LSPs

To speed up LSDB synchronization between devices, set flooding parameters of SNPs and LSPs
to proper values.
Context
SNPs consist of CSNPs and PSNPs. CSNPs carry summaries of all LSPs in LSDBs, ensuring
LSDB synchronization between neighboring routers. SNPs are processed differently on
broadcast links and P2P links.
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To speed up LSDB synchronization, modify the following parameters of SNPs and LSPs on the
NE80E/40E:
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Procedure
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Issue 02 (2014-09-30)
On a broadcast link, CSNPs are periodically sent by a DIS device. If a router detects that
its LSDB is not synchronized with that on its neighboring router, the router will send PSNPs
to apply for missing LSPs.
On a P2P link, CSNPs are sent only during initial establishment of neighboring
relationships. If a request is acknowledged, a neighboring router will send a PSNP in
response to a CSNP. If a router detects that its LSDB is not synchronized with that on its
neighboring router, the router will also send PSNPs to apply for missing LSPs.
Set an interval at which CSNPs are sent.
Configure the intelligent timer controlling LSP generation.
Set the maximum length for LSPs.
Set the refresh interval for LSPs.
Set the maximum lifetime for LSPs.
Set the minimum interval at which LSPs are sent.
Enable LSP fast flooding.
Set an interval at which LSPs are retransmitted over a P2P link.
Set an interval at which CSNPs are sent.

1.

Run:
system-view
The system view is displayed.
2. Run:
interface interface-type interface-number
The interface view is displayed.
3. Run:
isis timer csnp csnp-interval [ level-1 | level-2 ]
The interval at which CSNPs are sent is set on the specified interface.
NOTE
Configure Level-1 and Level-2 only when a broadcast interface is specified.
Configure the intelligent timer controlling LSP generation.
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