H3C Technologies H3C SecPath F1000-E - Manual (Page 541)

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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 since host names are easier to remember and use.
Such mappings can be configured manually or dynamically.
• 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
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter IS-IS view.
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
N/A
3. Configure a system ID to host
name mapping for a remote
IS.
is-name map sys-id map-sys-name
A system ID can only correspond to
a host name.
Configuring dynamic system ID to host name mapping
You need to 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 needs to be modified, you need to perform
configuration on all routers.
You can configure dynamic system ID to host name mapping. To do so, you need to configure a host
name for each router in the network. Each router advertises the host name in dynamic host name CLVs to
other routers. At last, 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.
To configure dynamic system ID to host name mapping:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter IS-IS view.
isis [ process-id ]
[ vpn-instance
vpn-instance-name ]
N/A
3. Specify a host name
for the router.
is-name sys-name No specified by default.
4. Return to system view. quit N/A
5. Enter interface view.
interface interface-type
interface-number
N/A