A junior engineer has configured eBGP between two CX switches (Agg-1 and Agg-2) using the configuration below, and tells you that the neighbors are in the 'Active' state. What can you tell them?

Question

Exhibit

Options

• AWhen configuring eBGP the AS numbers must match.
• BThe eBGP multi-hop feature must be configured.
• CPeering using loopback addresses is not supported.
• DThe BGP peers are advertising and learning routes.

• A
  12% (7)
• B
  59% (34)
• C
  22% (13)
• D
  7% (4)

Explanation

The engineer configured eBGP using loopback interfaces as the update-source: neighbor 10.3.0.3 update-source loopback 0 neighbor 10.3.0.12 update-source loopback 0 However, eBGP sessions do not form using loopback addresses unless eBGP multihop is explicitly configured, because eBGP expects neighbors to be directly connected (TTL = 1 by Since the peers are not directly connected on their loopback IPs, the session remains in the

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