Which command do they need to apply?

The network engineering group of a large ISP needs to harden the management plane of its Cisco 9000 Series ASRs. While addressing IPv6 ICMP issues, they realized they have to limit the rate at which IPv6 ICMP error messages are sent out on the network.

Which command do they need to apply?
A . icmp ipv6 rate-limit unreachable 1000
B . ipv6 rate-limit 1000
C . icmp ipv4 rate-limit unreachable 1000
D . ipv6 icmp error-interval 50 20

View Answer

Answer: D

Explanation:

Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipv6_basic/configuration/xe-3s/ip6b-xe-3s­book/ip6-icmp-rate-lmt-xe.html