Changing the hello multiplier for an IS-IS interface

The hello multiplier is the number by which an IS-IS interface multiplies the hello interval to obtain the hold time for Level 1 and Level 2 IS-to-IS hello PDUs. The following task changes the hello multiplier for Level 2 packets for an Ethernet interface.

Procedure

Enter the configure terminal command to access global configuration mode.
```
device# configure terminal
```
Enter the interface ethernet command and specify an interface.
```
device(config)# interface ethernet 1/2
```
Enter the isis hello-mulitplier command with the level-2 parameter, and specify a value, to change the hello multiplier for Level 2 packets for the interface.
```
device(conf-if-eth-1/2)# isis hello-mulitplier level-2 20
```

Example

The following example changes the hello multiplier to 20 for Level 2 packets for an Ethernet interface.

device# configure terminal
device(config)# interface ethernet 1/2
device(conf-if-eth-1/2)# isis hello-mulitplier level-2 20