Based on the debugs, what is the cause of this issue?

Refer to the exhibit.

A site-to-site tunnel between two sites is not coming up.

Based on the debugs, what is the cause of this issue?
A . An authentication failure occurs on the remote peer.
B . A certificate fragmentation issue occurs between both sides.
C . UDP 4500 traffic from the peer does not reach the router.
D . An authentication failure occurs on the router.

View Answer

Answer: C

Explanation:

https://www.cisco.com/c/en/us/support/docs/security-vpn/ipsec-negotiation-ike-protocols/113594-trouble-ios-ike-00.html#anc12