Cisco Cisco Agent Desktop 9.0 Technische Referenzen
Deployment Issues
November 26, 2013
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When the SPAN session copies the packet that hits the port it is monitoring and sends
it to the VoIP server port, the packet capturing software looks at the packet's source
and destination MAC address. Since the source MAC was changed to
112233445566, the software discards the packet. This continues and the packet
capturing software never sees an audio packet that contains the MAC address it is
looking for.
it to the VoIP server port, the packet capturing software looks at the packet's source
and destination MAC address. Since the source MAC was changed to
112233445566, the software discards the packet. This continues and the packet
capturing software never sees an audio packet that contains the MAC address it is
looking for.
NOTE: Using IP addresses and ports for packet filtering will work
normally under these configurations.
normally under these configurations.
Server Capacity
Large numbers of agents require multiple VoIP servers.
VoIP server software has limits to the amount of network traffic it can analyze before it
starts to lag. This is a CPU resource issue, so using faster CPUs or multiple CPUs in the
server will modify this. Published capacity numbers include the hardware
specifications of the machine that the software was tested on.
starts to lag. This is a CPU resource issue, so using faster CPUs or multiple CPUs in the
server will modify this. Published capacity numbers include the hardware
specifications of the machine that the software was tested on.
There can also be limitations on the number of simultaneous calls that can be
processed by a single VoIP server. These limitations are software-based in that the
software has a limit that it will enforce by not accepting more work than it is
configured to do.
processed by a single VoIP server. These limitations are software-based in that the
software has a limit that it will enforce by not accepting more work than it is
configured to do.
These two limitations are a major factor when planning large deployments because it
dictates to some extent the server count, the capture methods used, and the
locations of the VoIP servers.
dictates to some extent the server count, the capture methods used, and the
locations of the VoIP servers.
Because capacity numbers for Cisco software can change with new software releases,
this document contains no official capacity numbers. Capacity numbers for illustrative
purposes only are used in the deployment examples (see
this document contains no official capacity numbers. Capacity numbers for illustrative
purposes only are used in the deployment examples (see
).
NOTE: CAD has software-enforced capacity limitations.
Number of SPAN Sessions
Limits on the number of SPAN sessions can affect VoIP server placement and count.
Cisco switches cannot support an unlimited number of active SPAN configurations.
Some switches can support only a single SPAN session. In this case, it is not an option
to connect more than one VoIP server to a single switch.
Some switches can support only a single SPAN session. In this case, it is not an option
to connect more than one VoIP server to a single switch.
lists the number
of SPAN sessions supported by various models of Cisco switches.