Dell BigIron RX Series, Configuration Manual

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888 BigIron RX Series Configuration Guide
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Configuring ISIS properties on an interface
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The <string> parameter specifies the password. You can enter an alphanumeric string up to 80
characters long. The password can contain blank spaces. If you use a blank space in the password,
you must use quotation marks (“ “) around the entire password; for example, isis password “admin
2”.
Changing the IS-IS level on an interface
The section “Changing the IS-IS Level globally” on page 876 explains how to change the IS-IS level
globally. By default, a BigIron RX can operate as both a Level-1 and IS-IS Level-2 router. You can
change the IS-IS type on an individual interface to be Level-1 only or Level-2 only. You also can
reset the type to both Level-1 and Level-2.
NOTE
If you change the IS-IS type on an individual interface, the type you specify must also be specified
globally. For example, if you globally set the type to Level-2 only, you cannot set the type on an
individual interface to Level-1. The software accepts the setting but the setting does not take effect.
To change the IS-IS type on a specific interface, enter commands such as the following.
BigIron RX(config)# interface ethernet 2/8
BigIron RX(config-if-e1000-2/8)# isis circuit-type level-1
Syntax: [no] isis circuit-type level-1 | level-1-2 | level-2
The level-1 | level-1-2 | level-2 parameter specifies the IS-IS type. If you want to re-enable support
for both IS-IS types, re-enter the command you entered to change the IS-IS type, and use “no” in
front of the command.
Disabling and enabling hello padding on an interface
The section “Globally disabling or re-enabling hello padding” on page 878 explains what hello
padding is, why it is important and how to globally disable or enable it on a device. You can also
disable hello padding on a specific interface by entering commands such as the following.
BigIron RX(config)# interface ethernet 2/8
BigIron RX(config-if-e1000-2/8)# no isis hello padding
Syntax: [no] isis hello padding
By default, hello padding is enabled. Enter the no form of the command to disable hello padding.
Changing the hello interval
The hello interval controls how often an IS-IS interface sends hello messages to its IS-IS neighbors.
The default interval is 10 seconds for Level-1 and Level-2. You can change the hello interval for one
or both levels to a value from 1 – 65535 seconds.
To change the hello interval for Ethernet interface 2/8, enter commands such as the following.
BigIron RX(config)# interface ethernet 2/8
BigIron RX(config-if-e1000-2/8)# isis hello-interval 20
This command changes the hello interval to 20 seconds. By default, the change applies to both
Level-1 and Level-2.
Syntax: [no] isis hello-interval <num> [level-1 | level-2]