Explicit-Null - Cisco Nexus 7000 Series Command Reference Manual

explicit-null

explicit-null
To configure an advertised explicit null label in place of an implicit null label, use the explicit-null
command. To return to the default setting, use the no form of this command.
Syntax Description
for
prefix-list
to
Defaults None
Command Modes LDP configuration mode
Supported User Roles
network-admin
vdc-admin
Command History Release
5.2(1)
Usage Guidelines This command requires the MPLS Services license.
Examples This example shows how to configure an explicit null label on an egress Label Switching Router (LSR),
which causes that LSR to advertise the explicit null label to all adjacent MPLS routers:
switch(config-ldp)# explicit-null
switch(config-ldp)#
This example shows how to configure an explicit null label and specify the for keyword with a prefix list:
switch(config-ldp)# explicit-null for prefix-list
switch(config-ldp)#
This example shows how to configure an explicit null label and specify the to keyword with a prefix list:
switch(config-ldp)# explicit-null to prefix-list
switch(config-ldp)#
Cisco Nexus 7000 Series NX-OS MPLS Command Reference
146
explicit-null [for prefix-list | to prefix-list | for prefix-list to prefix-list]
no explicit-null [for prefix-list | to prefix-list | for prefix-list to prefix-list]
(Optional) Specifies the prefix list that specifies the controls on destination
prefixes.
(Optional) Prefix list.
(Optional) Specifies the access list that specifies the controls on Label
Distribution Protocol (LDP) peers.
Modification
This command was introduced.
E Commands
OL-24994-01