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isis hello-interval
Configures the number of seconds between transmission of hello packets for an interface.
Syntax: isis hello-interval seconds [milliseconds] [level-1 | level-2]
no isis hello-interval
seconds
Number of seconds between transmission of hello packets. Valid values are between 1 and 65535 seconds.
milliseconds
Changes the value entered as seconds to milliseconds.
level-l
Configures the hello interval for Level 1. If you do not specify a level, the default is Level 1
level-2
Configures the hello interval for Level 2.
Description: IS-IS uses hello packets to establish and maintain connections to neighbors. The hello interval is the number of seconds between transmission of hello packets from this interface. Smaller hello intervals enable faster response to changes in the network, but increase the amount of control traffic.
Use the isis hello-interval seconds level-1 command to configure the number of seconds between transmission of hello packets on this interface for Level-1 adjacencies.
Use the isis hello-interval seconds level-2 command to configure the number of seconds between transmission of hello packets on this interface for Level-2 adjacencies.
Use the no isis hello-interval command to configure the number of seconds between transmission of hello packets to the default value of 10 seconds.
Factory Default: 10 seconds.
Command Mode: Interface configuration.
Example 1: In the following example:
- The router isis command enables IS-IS on the router, specifies an IS-IS instance, and changes the command mode to Router configuration.
- The net command configures a NET for the routing process.
- The interface pos n/n/n identifies a specific POS interface and changes the command mode to Interface configuration.
- The ip router isis command enables the IS-IS process specified by the global router isis command on the interface.
- The isis hello-interval seconds configures interface 1/5/1 to advertise hello packets every 3 seconds
- The show running-config interface command displays the setting:
router(config)#router isis 1
router(config-router)#net 40.0001.0000.0000.0001.00
router(config-router)#interface pos 1/1/1
router(config-if)#ip router isis 1
router(config-if)#isis hello-interval 3
router(config-if)#end
router#show run int
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!
interface pos 1/5/1
sonet path-trace NPI1 1/5/1
ip address 10.100.53.2 255.255.255.0
crc 16
ip router isis 1
isis hello-interval 3 level-1
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Example 2: In the following example, the isis hello-interval seconds milliseconds configures interface 1/1/1 to advertise hello packets every 250 milliseconds:
router(config)#router isis 1
router(config-router)#net 40.0001.0000.0000.0001.00
router(config-router)#interface pos 1/1/1
router(config-if)#ip router isis 1
router(config-if)#isis hello-interval 250 milliseconds
Related Commands: ip router isis
isis hello-multiplier
isis hello-padding
isis lsp-interval
net
router isis
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Copyright © 2004
Avici Systems Inc.
Avici® and TSR®
is a registered trademark of Avici Systems Inc.
IPriori™, Composite Links™, SSR™, QSR, and NSR® are
trademarks of Avici Systems Inc.
Source
File Name: ISIS.fm
HTML File Name: ISIS11.html
Last Updated: 05/10/04 at 16:35:45