This configuration is found on the Cisco Unified Communications Manager Express router: Which route is needed to complete this configuration?

Question

Exhibit

Options

• Aip route 172.31.12.254 255.255.255.255 Service-Engine1/0
• Bip route 172.31.12.254 255.255.255.255 172.31.12.1
• Cip route 172.31.12.254 255.255.255.255 172.31.12.254
• Dip route 172.31.12.254 255.255.255.255 172.31.11.1

• A
  83% (24)
• B
  3% (1)
• C
  3% (1)
• D
  10% (3)

Explanation

Answer A ('ip route 172.31.12.254 255.255.255.255 Service-Engine1/0') is correct because Cisco Unity Express (CUE) runs on a Network Module (NM-CUE) that is installed inside the router and accessed through an internal Service Engine interface. The Service-Engine1/0 interface is the logical interface used by IOS to communicate with the CUE module. A host route (/32 mask, shown as 255.255.255.255) pointing to the Service-Engine interface is required so that the router can forward traffic destined for the CUE module's IP address (172.31.12.254) to that internal interface. Answer B is incorrect because routing to 172.31.12.1 would send traffic to an upstream next-hop rather than the internal module. Answer C is incorrect because a route cannot use the destination address itself as the next-hop (recursive loop). Answer D is incorrect because routing to 172.31.11.1 points to a different subnet gateway, not the internal CUE module.

No community discussion yet for this question.