R3303-HP HSR6800 Routers Layer 3 - IP Routing Configuration Guide
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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, 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:
• When you use the display isis lsdb command on a router configured with dynamic system ID to host
name mapping, router names rather than system IDs are displayed.
• 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
To configure a static system ID to host name mapping:
Ste
p
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 must 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. All routers in the network then have all the mappings to generate a mapping table.
To help check the origin of LSPs in the LSDB, you can configure a name for the DIS in a broadcast
network.
To configure dynamic system ID to host name mapping:
Ste
p
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 Not specified by default.
4. Return to system view.
quit N/A
5. Enter interface view.
interface interface-type
interface-number
N/A