An engineer is configuring Cisco Unified IM and Presence on-premises SIP Federation. . Assuming the DNS SRV configuration is correct, what should the engineer configure next to resolve this issue?

Question

Options

• AA static route that points to the internal interface of the external domain.
• BA static route that points to the external interface of the external domain.
• CA static route on the external domain points to the external interface.
• DA dynamic route on the external domain that points to the internal interface.

• A
  6% (2)
• B
  77% (24)
• C
  13% (4)
• D
  3% (1)

Explanation

For on-premises SIP Federation in Cisco Unified IM and Presence, after DNS SRV is in place, the IM and Presence server needs to know how to reach the federated external domain. This is done by adding a static route on the IM and Presence server that points to the external (publicly reachable) interface or IP address of the external domain's SIP proxy. Using the internal interface (choice A) is incorrect because the external domain's internal addresses are not routable from your network. Choice C describes configuring a route on the external domain, which is that organization's responsibility, not yours. Choice D (dynamic route) is not applicable - IM and Presence SIP Federation uses static routes.

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