Which Cisco IOS XR command should be used in order to enable LDP on all interfaces for which
the IGP protocol is enabled?
A.
RP/0/0/CPU0:R1(config-ospf)#mpls ldp auto-config
B.
RP/0/0/CPU0:R1(config-ospf)#mpls ldp interface all enable
C.
RP/0/0/CPU0:R1(config-ospf)#enable all
D.
RP/0/0/CPU0:R1(config-ldp)#enable all
Explanation:
IGP Auto-configuration
To enable LDP on a large number of interfaces, IGP auto-configuration lets you automatically configure LDP on all interfaces associated with a specified IGP interface.
http://www.cisco.com/c/en/us/td/docs/ios_xr_sw/iosxr_r3-7/mpls/configuration/guide/gc37ldp.html#wp1207126
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