02-13-2014 08:10 AM - edited 03-07-2019 06:11 PM
Please someone help me deschiper the QOS on our legacy distribution switches, these are the switch connecting to our closets, each port is a fiber trunk back to the distribution. I'm assuming this is the egress queue, I have some understanding of what is happening but not all. The things I understnad I marked, I need help with the rest....
interface FastEthernet 3/5
description HICKPOPPROBE3
switchport
switchport access vlan 138
switchport trunk encapsulation 138
switchport trunk allowed vlan non
switchport mode trunk
no ip address
shutdown
speed 100
duplex full
wrr-queue queue-limit 2 100 -- ???
wrr-queue threshold 1 1 1 -- ???
wrr-queue threshold 2 1 1 --- ??
wrr-queue cos-map 2 1 4 5 6 - here I believe that the second queue has the DSCP values assigned to it, but I'm not positive
wrr-queue cos-map 2 2 7 - here as well ??
mls qost trust cos
I basically need the full qos picture explained asside from the trunk and speed and duplex configuration. I'm having troubble understanding the thresholds and queue limits. Also on the following configuration as well:
interface GigabitEthernet 6/7
descripion WLAN controller
switchport
switchport access vlan 128
switchport trunk encapsulation dot1q
switchport trunk native vlan 128
switchport trunk allowed vlan 128, 324, 332
switchport mode trunk
no ip address
wrr-queue random-detect min-threshhold 1 1 1 --- ??? is this minimum random drop and minimum complete drop for queue 1 ????
wrr-queue random-detect min-threshhold 2 1 1 ---- ???? is this minimum random drop and minimum complete drop for queue 2 ????
wrr-queue randont-detect max-threshold 1 80 100 --- here i understand on first queue it will start random drop at 80% and drop all at 100%
wrr-queue randont-detect max-threshold 2 80 100 --- same for queue 2
mls qos trust cos
flowcontrol send on
channel-group 8 mode on
02-13-2014 08:53 AM
What model switches?
If 6500, what model line cards.
02-13-2014 09:21 AM
I believe 6509
02-13-2014 10:18 AM
6500 QoS varies per line card architecture. Without knowing the line cards, difficult to decipher QoS statements.
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