R3303-HP HSR6800 Routers Layer 3 - IP Routing Configuration Guide

149
Ste
p
Command Remarks
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Disable hello source
address check for the PPP
interface.
isis peer-ip-ignore
The command only applies to the PPP
interface.
By default, hello source address check
is enabled.
Enabling an interface to send small hello packets
IS-IS messages cannot be fragmented at the IP layer because they are directly encapsulated into frames.
Any two IS-IS neighboring routers must negotiate a common MTU. To avoid sending big hellos for saving
bandwidth, enable the interface to send small hello packets without CLVs.
To enable an interface to send small hello packets:
Ste
p
Command Remarks
1. Enter system view.
system-view
N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Enable the interface to send
small hello packets without
CLVs.
isis small-hello
Standard hello packets are sent by
default.
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:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter IS-IS view.
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
N/A
3. Specify the maximum LSP
age.
timer lsp-max-age seconds
Optional.
1200 seconds by default.
2. Specify the LSP refresh interval and generation interval
Each router needs to refresh LSPs generated by itself at a configurable interval and send them to
other routers to prevent valid routes from being aged out. A smaller refresh interval speeds up
network convergence but consumes more bandwidth.