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Setting the ATT bit of Level-1 LSPs
1. Enter system view.
system-view
N/A
2. Enter IS-IS view
isis
[ process-id ] [
vpn-instance
vpn-instance-name ]
N/A
3. Set the ATT bit of Level-1
LSPs.
set-att
{
always
|
never
}
By default, the ATT bit is not set
for Level-1 LSPs.
Configuring the tag value for an interface
Perform this task when the link cost style is wide, wide-compatible, or compatible.
When IS-IS advertises a prefix with a tag value, IS-IS adds the tag to the IP reachability information
TLV of the prefix.
To configure the tag value for an interface:
1. Enter system view.
N/A
2. Enter interface view.
interface
interface-type interface-number N/A
3. Configure the tag
value for the
interface.
isis tag
tag
By default, the tag value of
the interface is not
configured.
Configuring system ID to host name mappings
A 6-byte system ID in hexadecimal notation uniquely identifies a router or host in an IS-IS network.
To make a system ID easy to read, the system allows you to use host names to identify devices. It
also provides mappings between system IDs and host names.
The mappings can be configured manually or dynamically. Follow these guidelines when you
configure the mappings:
• To view host names rather than system IDs by using the display isis lsdb command, you must
enable dynamic system ID to host name mapping.
• If you configure both dynamic mapping and static mapping on a router, the host name specified
for dynamic mapping applies.
Configuring a static system ID to host name mapping
1. Enter 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
By default, no system ID to host
name mapping is configured for a
remote IS.
A system ID can correspond to
only one host name.
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