Based on the Cisco IOS XR route policy configuration, when redistributing OSPF routes into IS-IS,
to which of the following does the “tag” value correspond?
A.
The tag value represents the OSPF metric.
B.
The tag value represents the IS-IS metric.
C.
The tag value identifies a route or set of routes.
D.
The tag value is used to match whether the IS-IS route is an external or internal IS-IS route.
E.
The tag value represents the administrative distance.
Explanation:
http://www.cisco.com/c/en/us/td/docs/routers/xr12000/software/xr12k_r4-2/routing/command/reference/b_routing_cr42xr12k/b_routing_cr42xr12k_chapter_01000.html#wp8617808920
http://www.cisco.com/c/en/us/td/docs/routers/xr12000/software/xr12k_r4-2/routing/command/reference/b_routing_cr42xr12k/b_routing_cr42xr12k_chapter_01000.html#wp1642259221
A tag is a 32-bit integer that can be associated with a given route within the RIB.
OSPF supports IP subnetting and tagging of externally derived routing information.
http://www.cisco.com/c/en/us/td/docs/routers/crs/software/crs_r4-2/routing/configuration/guide/b_routing_cg42crs/b_routing_cg42crs_chapter_0100.html#task_1077207