Exam 642-883 Question id=3435 IS-IS, IPv4, and IPv6 in Service Provider Environments

The Cisco IOS XE Software summary-address router IS-IS configuration command can be used to send a summarized route into which IS-IS hierarchy?

A. Level 1 only
B. Level 2 only
C. Level-1-2 only
D. Level 1 or Level 2 or Level-1-2

To create aggregate addresses for IS-IS, use the summary-address command in router configuration mode.
To restore the default, use the no form of this command.

summary-address address mask {level-1|level-1-2|level-2}
no summary-address
address mask {level-1|level-1-2|level-2}

Syntax Description:

address - Summary address designated for a range of addresses.

mask - IP subnet mask used forthe summary route.

level-1 - Only routes redistributed into Level 1 are summarized with the configured address and mask value.

level-1-2 - Summary routes are applied when redistributing routes into Level 1 and Level 2 IS-IS, and when Level 2 IS-IS advertises Level 1 routes as reachable in its area.

level-2 - Routes learned by Level 1 routing are summarized into the Level 2 backbone with the configured address and mask value. Redistributed routes into Level 2 IS-IS will be summarized also.



WARNING

the answers are mixed, do not specify in the comment number or the letter of the answer
please write answer#A instead A, answer#B instead B...
Subject:

only logged users can write comments