3Com Switch 7750 Configuration Guide Guide

326 CHAPTER 35: IS-IS CONFIGURATION
n
If you do not provide the level-1 keyword or the level-2 keyword, this command
applies to Level-1 and Level-2.
Configuring
Authentication
Configuring authentication on an interface
The authentication configured on the interface applies to the Hello packet in order
to authenticate neighbors. All interfaces must share the same authentication
password in the same level within a network.
Configuring authentication for an IS-IS area or routing domain
You can configure an authentication password for an IS-IS area or routing domain.
If area authentication is required, the area authentication password is
encapsulated in the LSP, CSNP, and PSNP packets at Level-1 as predefined. If area
authentication is also enabled on other routers in the same area, area
authentication works normally only if the authentication mode and password of
these routers are the same as those of the neighboring routers.
Likewise, if domain authentication is required, the domain authentication
password is also encapsulated in the LSP, CSNP, and PSNP packets at Level-2 as
predefined. If domain authentication is also required on other routers at the
backbone layer (Level-2), the authentication works normally only if the
authentication mode and password of these routers are the same as those of the
neighboring routers.
Enter interface view
interface interface-type
interface-number
Required
Configure the number of
Hello packets expected from
the remote router before it is
considered dead
isis timer
holding-multiplier value [
level-1 | level-2 ]
Optional
By default, three Hello packets
are expected from the remote
router before it is considered
dead.
Table 254 Configure the number of Hello packets expected from the remote router
before it is considered dead
Operation Command Description
Tabl e 255 Configure authentication
Operation Command Description
Enter system view system-view -
Enter interface view
interface interface-type
interface-number
Required
Configure the IS-IS
authentication mode and
password
isis authentication-mode {
simple | md5 } password [ {
level-1 | level-2 } [ ip | osi ] ]
Optional
By default, no authentication
is configured.
Tabl e 256 Configure authentication
Operation Command Description
Enter system view system-view -
Enter IS-IS view isis [ tag ] Required