Question 140 of 530 from exam 400-251: CCIE Security written exam

Question 140 of 530 from exam 400-251: CCIE Security written exam

Question

Refer to the exhibit of an ISAKMP debug.

processing SA payload. message ID = 0
Checking ISAKMP transform 1 against priority 10 policy
encryption DES-cBC
hash SHA
default group 1
auth pre-share

‘ISAKMP atts are acceptable. Next payload is 0
ISAKMP SA is doing pre-shared key authentication
ISAKMP processing KE payload. message ID = 0
ISAKMP (62)! processing NONCE payload. message ID = 0
ISAKMP SKEYID state generated

ISAKMP (62); processing vendor id payload
ISAKMP Speaking to another Cisco IOs box!

ISAKMP: reserved not zero on ID payload!

CRYPTO-4-TKMP_HAD MESSAGE: IKE message from 172.16.100.201
failed its sanity check or is malformed

Which message of the exchange is failing?

Answers

Explanations

A. B. C. D. E.

B.