Enabling An Interface To Send Small Hello Packets; Configuring Lsp Parameters - HP 6125XLG Layer 3 - Ip Routing Configuration Manual

Step
2. Enter interface view.
3. Disable the interface from
sending and receiving IS-IS
packets.

Enabling an interface to send small hello packets

IS-IS messages cannot be fragmented at the IP layer because they are directly encapsulated in frames.
Any two IS-IS neighboring routers must negotiate a common MTU. To avoid sending big hellos to save
bandwidth, enable the interface to send small hello packets without CLVs.
To enable an interface to send small hello packets:
Step
1. Enter system view.
2. Enter interface view.
3. Enable the interface to send
small hello packets without
CLVs.

Configuring LSP parameters

Configuring LSP timers
1. Specify the maximum age of LSPs.
Each LSP has an age that decreases in the LSDB. Any LSP with an age of 0 is deleted from the LSDB.
You can adjust the age value based on the scale of a network.
To specify the maximum age of LSPs:
Step
1. Enter system view.
2. Enter IS-IS view.
3. Specify the maximum LSP
age.
2. Specify the LSP refresh interval and generation interval.
Each router needs to refresh its LSPs at a configurable interval and send them to other routers to
prevent valid routes from aging out. A smaller refresh interval speeds up network convergence but
consumes more bandwidth.
When the network topology changes, for example, a neighbor is down or up, or the interface
metric, system ID, or area ID is changed, the router generates an LSP after a configurable interval.
Command
interface interface-type
interface-number
isis silent
Command
system-view
interface interface-type
interface-number
isis small-hello
Command
system-view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
timer lsp-max-age seconds
143
Remarks
N/A
By default, the interface can send
and receive IS-IS packets.
Remarks
N/A
N/A
By default, the interface can send
standard hello packets.
Remarks
N/A
N/A
The default setting is 1200
seconds.