Interview on Cisco Support Community

William Bell
Vice President, Solutions and Products

Recently I was interviewed for the Cisco Support Community, which is an online technical support forum for Cisco Systems. The content of that interview is available here. I wanted to thank Dan Bruhn and Litsa Pitsillidou for setting up the interview and for their (as well as their team’s) dedication  to making the Cisco Support Community so successful!

I’d also like to thank Litsa and Rhonda Raider (Raider Communications, Inc.) for conducting the interview. You’re tops in my book!


2 responses to “Interview on Cisco Support Community

  1. I was at one of your CMUG classes last year for CUCM. I wanted to test SRST on a gateway i am installing at another site. How would i go about setting up a mock vlan to test this along with a handful of phones. Thanks. Jim

  2. Jim,

    I am not sure I follow. If you are looking for ways to test SRST in production then what I typically do is build an ACL that blocks the appropriate voice control traffic to/from the UCM cluster. If your gateway is MGCP-based then you will need to block UDP 2427 and TCP 2428. If the gateway is H323, then no need to block anything there. If your phones are SIP then block TCP/UDP 5060 and 5061. If SCCP then block TCP 2000 (and/or 2443 if secure phones).

    Basically, you need to disrupt the communication channel to force the gateway (if mgcp) and phones to use their respective fail over mechanisms.


    -Bill (@ucguerrilla)

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Nick Kelly

Cybersecurity Engineer, Cisco

Nick has over 20 years of experience in Security Operations and Security Sales. He is an avid student of cybersecurity and regularly engages with the Infosec community at events like BSides, RVASec, Derbycon and more. The son of an FBI forensics director, Nick holds a B.S. in Criminal Justice and is one of Cisco’s Fire Jumper Elite members. When he’s not working, he writes cyberpunk and punches aliens on his Playstation.


Virgilio “BONG” dela Cruz Jr.

CCDP, CCNA V, CCNP, Cisco IPS Express Security for AM/EE
Field Solutions Architect, Tech Data

Virgilio “Bong” has sixteen years of professional experience in IT industry from academe, technical and customer support, pre-sales, post sales, project management, training and enablement. He has worked in Cisco Technical Assistance Center (TAC) as a member of the WAN and LAN Switching team. Bong now works for Tech Data as the Field Solutions Architect with a focus on Cisco Security and holds a few Cisco certifications including Fire Jumper Elite.


John Cavanaugh

CCIE #1066, CCDE #20070002, CCAr
Chief Technology Officer, Practice Lead Security Services, NetCraftsmen

John is our CTO and the practice lead for a talented team of consultants focused on designing and delivering scalable and secure infrastructure solutions to customers across multiple industry verticals and technologies. Previously he has held several positions including Executive Director/Chief Architect for Global Network Services at JPMorgan Chase. In that capacity, he led a team managing network architecture and services.  Prior to his role at JPMorgan Chase, John was a Distinguished Engineer at Cisco working across a number of verticals including Higher Education, Finance, Retail, Government, and Health Care.

He is an expert in working with groups to identify business needs, and align technology strategies to enable business strategies, building in agility and scalability to allow for future changes. John is experienced in the architecture and design of highly available, secure, network infrastructure and data centers, and has worked on projects worldwide. He has worked in both the business and regulatory environments for the design and deployment of complex IT infrastructures.