3Com Switch 7750 Configuration Guide Guide

330 CHAPTER 35: IS-IS CONFIGURATION
Configuring SPF to release CPU resources automatically
In IS-IS, SPF calculation may occupy system resources for a long time and slow
down console response. To avoid this, you can configure SPF to automatically
release CPU resources each time a specified number of routes are processed and
continue to calculate the remaining routes after one second.
Enabling/Disabling
Packet Transmission
Through an Interface
To prevent IS-IS routing information from being accessed by a router on another
network, use the silent-interface command to configure the VLAN interface
containing the network segment to receive, but not to send, IS-IS packets.
Resetting all IS-IS
Configuration Data
Perform the following configuration in user view to refresh LSPs immediately.
Resetting Configuration
Data of an IS-IS Peer
Tabl e 266 Configure SPF to release CPU resources automatically
Operation Command Description
Enter system view system-view -
Enter IS-IS view isis [ tag ] Required
Configure the interval at
which SPF releases CPU
resources
spf-delay-interval number
Optional
By default, in IS-IS, SPF
releases CPU resources each
time it has finished processing
5,000 routes.
Tabl e 267 Enable/disable packet transmission through an interface
Operation Command Description
Enter system view system-view -
Enter IS-IS view isis [ tag ] Required
Disable an interface from
sending IS-IS packets
silent-interface
interface-type
interface-number
Optional
By default, an interface is
enabled to receive and send
IS-IS packets.
Tabl e 268 Reset all IS-IS configuration data
Operation Command Description
Enter system view system-view -
Reset all IS-IS configuration
data
reset isis all
Optional
By default, IS-IS configuration
data is not cleared.
Tabl e 269 Reset configuration data of the IS-IS peer
Operation Command Description
Enter system view system-view -
Reset configuration data of an
IS-IS peer
reset isis peer system-id
Optional
By default, configuration data
of an IS-IS peer is not reset.