Referring to the Cisco IOS XR configuration exhibit,
which labels will be advertised by the router with this configuration?
A.
Only the label for 10.1.1.1/32 will be advertised to all the LDP peers.
B.
Labels for all prefixes will be advertised to the 10.1.1.1 LDP peer.
C.
Labels for all prefixes will be advertised to all the LDP peers.
D.
No labels will be advertised to any LDP peers.
Explanation:
Could answer be D?
http://www.cisco.com/c/en/us/td/docs/ios_xr_sw/iosxr_r3-7/mpls/configuration/guide/gc37ldp.html#wp1128256
By default, a label switched router (LSR) advertises all incoming label prefixes to each neighboring router. You can control the exchange of label binding information using the mpls ldp label advertise command. Using the optional keywords, you can advertise selective prefixes to all neighbors, advertise selective prefixes to defined neighbors, or disable label advertisement to all peers for all prefixes.
mpls ldp
label advertise {disable | for prefix-acl [to peer-acl] | interface }
disable — Disables label advertisement to all peers for all prefixes (if there are no other conflicting rules) << what conflicting rules?
for prefix-acl to peer-acl — Specifies neighbors that advertise and receive label advertisements