Cisco 300-410 Question Answer
Refer to the exhibit.
Which action resolves the adjacency issue?
Match the hello interval timers.
Configure the same EIGRP process IDs.
Match the authentication keys.
Configure the same autonomous system numbers.
EIGRP does not have process ID as it uses Autonomous System (AS) numbers only.
This is not an authentication problem or we would see this error from the debug:
EIGRP: Ethernet0/0: ignored packet from 10.1.1.3, opcode = 1 (missing authentication or key-chain missing)
If the AS numbers between two routers are different then the neighbor relationship cannot be formed.
TESTED 07 Jul 2025
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