3Com 7757 Configuration Manual page 341

Adding an Interface to a
Mesh Group
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.
Table 273 Configure authentication
Operation
Enter system view
Enter IS-IS view
Define the area
authentication mode
Define the domain
authentication mode
Configuring IS-IS to use an MD5 algorithm compatible with the switches
of other manufacturers
To enable IS-IS MD5 authentication between the switch and the switches of other
manufacturers, you must use the following commands to configure IS-IS to use an
MD5 algorithm compatible with the switches of other manufacturers.
Table 274 Configure IS-IS to use an MD5 algorithm compatible with the switches of other
manufacturers
Operation
Enter system view
Enter IS-IS view
Configure IS-IS to use an MD5
algorithm compatible with the switches
of other manufacturers
Configure IS-IS to use the default MD5
algorithm
On an NBMA network, a router floods a new LSP received from an interface to
other interfaces of the router. This can cause repeated LSP flooding on a
high-connectivity network with multiple point-to-point links, which is a waste of
the bandwidth.
To avoid this problem, you can add interfaces into a mesh group. The interfaces in
the group will flood the new LSPs to only the interfaces outside the mesh group.
Table 275 Add an interface to a mesh group
Operation Command
Enter system view system-view
Enter interface view interface interface-type
interface-number
Command
system-view
isis [ tag ]
area-authentication-mode { si
mple | md5 } password [ ip | osi ]
domain-authentication-mode {
simple | md5 } password [ ip |
osi ]
Command
system-view
isis [ tag ]
md5-compatible
undo
md5-compatible
IS-IS Basic Configuration
Description
-
Required
Optional
Optional
By default, no password is
defined and no
authentication is enabled.
Description
-
Required
Optional
Optional
By default, the private MD5
algorithm is used.
Description
-
Required
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