Configuring System Id To Host Name Mappings - H3C S5500-EI Configuration Manual

To do...
Set the overload bit

Configuring system ID to host name mappings

In IS-IS, a system ID identifies a router or host uniquely. A system ID has a fixed length of 6 bytes. When
an administrator needs to view IS-IS neighbor information, routing table or LSDB information, using the
system IDs in dotted decimal notation is not convenient. To solve it, you can configure the mappings
between system IDs and host names, as host names are easier to remember and use.
Such mappings can be configured manually or dynamically. Note the following:
Using the display isis lsdb command on a router configured with dynamic system ID to host name
•
mapping displays router names rather than system IDs.
If you configure both dynamic and static system ID to host name mappings on a router, the host
•
name for dynamic system ID to host name mapping applies.
Configuring a static system ID to host name mapping
Follow these steps to configure a static system ID to host name mapping:
To do...
Enter system view
Enter IS-IS view
Configure a system ID to host name
mapping for a remote IS
Configuring dynamic system ID to host name mapping
Configure a static system ID to host name mapping for any other router in a network. When a new router
is added into the network or a mapping must be modified, perform configuration on all routers.
You can configure dynamic system ID to host name mapping. To do so, you must configure a host name
for each router in the network. Each router advertises the host name in dynamic host name CLVs to other
routers. Then, all routers in the network have all the mappings to generate a mapping table.
In addition, you can configure a name for the DIS in a broadcast network to help check the origin of LSPs
in the LSDB.
Follow these steps to configure dynamic system ID to host name mapping:
To do...
Enter system view
Enter IS-IS view
Specify a host name for the
router
Return to system view
Use the command...
set-overload [ on-startup [ [ start-from-nbr system-id
[ timeout1 [ nbr-timeout ] ] ] | timeout2 ] [ allow { external
| interlevel } * ]
Use the command...
system-view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
is-name map sys-id map-sys-name
Use the command...
system-view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
is-name sys-name
quit
158
Remarks
Required
Not set by default
Remarks
—
—
Required
A system ID can only correspond to
a host name.
Remarks
—
—
Required
Not specified by default.
—