06-05-2003 06:08 AM - edited 03-13-2019 12:12 AM
Assuming H.323, anyone aware of the bandwidth consumption for a remote site that is ONLY going across the WAN for call setup/tear down and skinny keepalives? I'm trying to understand the average bandwidth consumtion for each process. I wish I had a WAN sniffer...
06-05-2003 06:16 AM
Why do you need a WAN sniffer.
You can use MS Network monitor or any sniffer software to calculate the banwidth requirement.
Skinny keepalives by defauld are sent every 30 seconds to Primary CCM and every 60 seconds to secondary CCM.
Each keepalive is like this:
phone---->CCM = 12 bytes of data + TCP header + IP Header + L2 header
phone<----CCM = 12 bytes of data + TCP header + IP Header + L2 header
phone---->CCM = 0 bytes of data + TCP header + IP Header + L2 header
Murat
06-05-2003 07:06 AM
I need the WAN sniffer because I'm ~800 miles away from the servers and I'm a little hesitant to run MS Network Monitor on a production CM server.
My reason for asking is I'm installing a remote site off a CM cluster, using centralized call processing, and only using CM for the tasks I mentioned. All inbound and outbound calls will be handled at this location and was curious as to how much bandwidth these tasks consume, so I could use MQC to carve out some bandwidth on this low speed link.
06-06-2003 10:52 AM
hello
from dave white siemens in the uk dave.white@siemens.com
could you try enabling nbar protocol discovery on the outgoing wan interface, this might save you a site visit & give you an idea of how much data for ip telephony is traversing the wan connection.
on the interface ip nbar protocol discovery
show ip nbar protocol discovery to view.
Good luck
Dave.
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