Hi Everyone,
I may be asking a dumb question here about QoS. We have a Cisco AVVID system with a Cat 6513 switch at the core. We have a lot of clients plugged into the blades of the 6513.
On the workstations when the phone is plugged in, there seems to be a significant drop in network performance. If we remove the 7960G phone from the line, the workstation is much quicker at file transfers and searching.
Does QoS reserve some bandwidth off the top of a 100 Mbit line? Will it let data not tagged as voice only use say 70% of the line speed while the phone is detected? I'm not so familiar with the details of QoS but just get tthe basics. Does anyone have a quick explanation as to why this may be or can point me to a doc from Cisco?
Many thanks!
Here's a snippet from our configs on the 6513.
Global config:
no mls flow ip
no mls flow ipv6
mls qos map cos-dscp 0 8 16 24 32 46 48 54
mls qos
Interface Config:
no ip address
wrr-queue cos-map 1 1 1
wrr-queue cos-map 1 2 0
wrr-queue cos-map 2 1 2 3 4 6 7
wrr-queue cos-map 2 2 5
mls qos trust cos
switchport
switchport mode access
switchport voice vlan 72
spanning-tree portfast
I may be asking a dumb question here about QoS. We have a Cisco AVVID system with a Cat 6513 switch at the core. We have a lot of clients plugged into the blades of the 6513.
On the workstations when the phone is plugged in, there seems to be a significant drop in network performance. If we remove the 7960G phone from the line, the workstation is much quicker at file transfers and searching.
Does QoS reserve some bandwidth off the top of a 100 Mbit line? Will it let data not tagged as voice only use say 70% of the line speed while the phone is detected? I'm not so familiar with the details of QoS but just get tthe basics. Does anyone have a quick explanation as to why this may be or can point me to a doc from Cisco?
Many thanks!
Here's a snippet from our configs on the 6513.
Global config:
no mls flow ip
no mls flow ipv6
mls qos map cos-dscp 0 8 16 24 32 46 48 54
mls qos
Interface Config:
no ip address
wrr-queue cos-map 1 1 1
wrr-queue cos-map 1 2 0
wrr-queue cos-map 2 1 2 3 4 6 7
wrr-queue cos-map 2 2 5
mls qos trust cos
switchport
switchport mode access
switchport voice vlan 72
spanning-tree portfast