H3C Technologies H3C S10500 Series Switches - Manual (Page 176)

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To do… Use the command… Remarks
Set the overload bit
set-overload [ on-startup [ [ start-from-nbr system-id
[ timeout1 [ nbr-timeout ] ] ] | timeout2 ] [ allow { external
| interlevel } * ]
Required
Not set by default
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… Use the command... Remarks
Enter system view system-view —
Enter IS-IS view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
—
Configure a system ID to host name
mapping for a remote IS
is-name map sys-id map-sys-name
Required
A system ID can only correspond to
a host name.
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… Use the command... Remarks
Enter system view system-view —
Enter IS-IS view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
—
Specify a host name for the
router
is-name sys-name
Required
Not specified by default.
Return to system view quit —