Cisco Exam 300-825 Topic 1 Question 27 Discussion

Refer to the exhibit.

outgoing SIP TLS data to 10.0.101.111:5061 from 10.0.101.121:43332, size 5430:

BEGINNING OF MESSAGE

INVITE sip:jabberuser@pod1.local SIP/2.0

Via: SIP/2.0/TLS 10.0.101.121:5061;branch=z9hG4bK6e7932e8ae287a80ee699eb04a6155a2

Call-ID: cf600c54-974c-48e5-92e2-95b1d4b9218f

CSeq: 1199885731 INVITE

Max-Forwards: 70

Contact: ;isFocus

To:

From: ''CCNP Collaboration'' ;tag=73a834a850d8ed13

Replaces: 5e158900-10001-ee62f-0@10.0.101.111;to-tag=1769141~ba2cc769-5032-4f8f-a864-9a51

Allow: INVITE, ACK, CANCEL, OPTIONS, INFO, BYE, UPDATE, REFER, SUBSCRIBE, NOTIFY, MESSAGE

Supported: timer, X-cisco-callinfo

Session-Expires: 1800

Min-SE: 90

User-Agent: Acano CallBridge

END OF MESSAGE

incoming SIP TLS data from 10.0.101.111:5061 to 10.0.101.121:43332, size 402:

BEGINNING OF MESSAGE

SIP/2.0 403 Forbidden

Via: SIP/2.0/TLS 10.0.101.121:5061;branch=z9hG4bK6e7932e8ae287a80ee699eb04a6155a2

From: ''CCNP Collaboration'' ;tag=73a834a850d8ed13

To: ;tag=252834177

Date: Mon, 30 Nov 2020 18:25:12 GMT

Call-ID: cf600c54-974c-48e5-92e2-95b1d4b9218f

CSeq: 1199885731 INVITE

Allow-Events: presence

Server: Cisco-CUCM12.5

Content-Length: 0

END OF MESSAGE

Some calls fail to connect after an engineer implements load balancing for a Cisco Meeting Server cluster. The engineer determines that if a call leaves Cisco UCM using the Cisco Meeting Server 1 SIP trunk, but the conference is already hosted on Cisco Meeting Server 2, then the call fails. If the call leaves Cisco UCM using the Cisco Meeting Server 2 SIP trunk, but the conference is already hosted on Cisco Meeting Server 1, then the call fails. What is the cause of the issue?