[Asterisk-Users] MTU and Voice Delay (latency??)

[Rich Adamson]

> > Be carefull with vlan assumptions. If two or more vlans exist across
> > multiple switches, how do you know if another vlan hasn't consumed all
> > available resources leaving little (or none) for your phone vlan?
> > 
> > Hint: look for "discarded packets in or out" on the physical ports of
> > those switches in the path.
> > 
> 
> There are two VLANS:
> 
> 1st VLAN has port 1 going to SDSL modem, ports 2-9 are connected to the
> phones
> 
> 2nd VLAN has port 10 going to PIX (then to ADSL modem) and the rest of the
> ports to the desktop.
> 
> Unfortunately the reporting and statistics on the #com switch 2226 PWR plus
> is somewhat limited. I can't find any discarded packets. 
> 
> I can plug one of the phones directly into the back of the SDSL modem to see
> if the problem goes away for that one user. That would take the switch out
> of the equation.

Given the above port descriptions, not likely the switch is an issue, but
easy enough to prove using your approach noted.

Then I'd use the two-ftp-session approach to prove the bandwidth is okay.