3com S7906E Guide De Référence

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password: Specifies a password. For simple authentication mode, the password must be plain text. For 
md5 authentication mode, the password can be either plain text or ciphertext. A plain text password can 
be a string of up to 16 characters, such as user918. A cipher password must be a string of 24 
characters, such as _(TT8F]Y\5SQ=^Q`MAF4<1!!.  
level-1: Sets the password for Level-1. 
level-2: Sets the password for Level-2. 
ip: Checks IP related fields in LSPs and SNPs. 
osi: Checks OSI related fields in LSPs and SNPs. 
 
 
This command is not available in loopback interface view.  
Whether a password should use ip or osi is not affected by the actual network environment.  
 
Description 
Use the isis authentication-mode command to set the IS-IS authentication mode and password for an 
interface.  
Use the undo isis authentication-mode command to restore the default. 
No neighbor relationship authentication is configured by default. 
The password in the specified mode is inserted into all outgoing hello packets and is used for 
authenticating the incoming hello packets. Only the authentication succeeds can the neighbor 
relationship be formed. 
Note that: 
For two routers to become neighbors, the same authentication mode and password must be 
specified at both ends.  
If you set a password without specifying a level, the password applies to both Level-1 and Level-2,  
If neither ip nor osi is specified, the OSI related fields in LSPs are checked.  
The level-1 and level-2 keywords are available only on the VLAN interfaces of switches after IS-IS 
is enabled on the interfaces with the isis enable command. 
Related commands: area-authentication-modedomain authentication-mode. 
Examples 
# Set the plain text password tangshi for VLAN-interface 10.  
<Sysname> system-view 
[Sysname] interface vlan-interface 10 
[Sysname-Vlan-interface10] isis authentication-mode simple tangshi level-1 
isis circuit-level 
Syntax 
isis circuit-level [ level-1 | level-1-2 | level-2 ] 
undo isis circuit-level