Configuring Lsp Parameters - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing

7.3.3 Configuring LSP Parameters

By configuring the LSP generation timer, you can adjust the time that an IS-IS network generates
LSPs. Setting the size of the LSP to be generated or received by IS-IS can affect the transmission
of LSPs.
Context
Perform the following steps on the router that runs IS-IS.
Procedure
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Configure the interval for refreshing LSPs
1. Run:
system-view
The system view is displayed.
2. Run:
isis [ process-id ]
The IS-IS view is displayed.
3. Run:
timer lsp-refresh refresh-time
The LSP refreshment period is set.
To synchronize all the LSPs in an area, the routers in the area periodically send all the
current LSPs.
By default, the LSP refreshment period is 900 seconds, and the maximum lifetime of an
LSP is 1200 seconds. When performing configurations, ensure that the LSP refresh interval
is 300 seconds shorter than the maximum LSP Keepalive time. In this way, new LSPs can
reach all routers in an area before existing LSPs expire.
NOTE
It is recommended to adjust the difference between the LSP refresh period and the maximum
Keepalive time of the LSP depending on the network scale.
Configure the max lifetime of an LSP
1. Run:
system-view
The system view is displayed.
2. Run:
isis [ process-id ]
The IS-IS view is displayed.
3. Run:
timer lsp-max-age age-time
The lifetime of an LSP is set.
When a router generates an LSP, it sets the max lifetime for the LSP. After the LSP is
received by other routers, its lifetime decreases as time passes. If a router does not receive
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