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Odd problem with LifeSize Video Conference unit

builder1977
Level 1
Level 1

We currently have a Lifesize express video conferencing unit, which up until a few weeks  ago was working fine. We had an ISP change fairly recently,  which involved changing the public IP address in the Network > NAT  section on the Lifesize. We have x 2 methods of placing calls to/from the unit (over our  MPLS WAN link using internal IP or External using Public IP)

A member at one of our remote offices has ammended the NATting/ACL's on the ASA 5510 F/W so that the new IP points to the internal IP of the Lifesize.

Since  that time we have had pixilation on the unit when placing &  receiving calls to other sites. Calls at different resolutions have been  tried, packet loss still evident even at the lowest settings. It has  made no difference over WAN MPLS link or Internet.

To rule out that nothing has happened to the unit, I downloaded the Lifesize software which I installed on my laptop.

The results shown below: (vlan 5=general user vlan, vlan110=video conf vlan). The laptop and lifesize are plugged into the same  Cisco 3560 48 port POE switch. The LifeSize unit is in fa0/42. Its IP is  10.3.110.11/24. The L3 IP's for these VLans reside on a connected 3750.

Scenario that works (no pixilation)

•     Laptop has the life-size Software loaded onto it, and is connected to the same LAN switch (swukcat01)

•     Laptop is in Vlan 110 and is in s/w port fa0/43

•     Laptop has a manual IP address of 10.3.110.240/24

•     D/G set to 10.3.110.1

Scenario that produced pixilation

•     Laptop using the life-size software loaded on it, and is connected to the same switch (swukcat01)

•     Laptop is in Vlan 5 and is still in s/w port fa0/43

•     Laptop is set to DHCP and got an address of 10.3.5.33/24

•     D/G given as 10.3.5.1

In a nutshell, calls across MPLS WAN & Internet are choppy, calls placed on LAN but on different vlan are choppy. Only scenario that works is both laptop & lifesize on the same subnet..

Any suggestions or comments welcome.

1 Reply 1

Phillip Remaker
Cisco Employee
Cisco Employee

Is it possible that VLAN 5 has some kind of traffic flooding or loop related to the ISP change?

Can you tell where packets are being lost, or delay introduced?

Without a complete network diagram, it is hard to speculate what the issue night be.  However, it seems to be an issue with VLAN 5.  Was hardware changed out when the ISP was changed?