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5 votes

STP packets and QoS

There's an excellent post by a Cisco employee on Cisco support forums covering this: The QoS value is not part of BPDU frame, but an internal value assigned on the RBUS (assuming 6500 platform) ...
Cow's user avatar
  • 1,732
3 votes

QOS - CPU CoS Weight- pluribus switches

Can it be traffic hampering if I change the cos-weight? The Class of Service (not Server) allows you to give priority to some traffic over other, based on the CoS value. What is important is the ...
Ron Trunk's user avatar
  • 67.7k
3 votes
Accepted

QoS Classification and Drop Rate

Does WRED only make sense if there is more than 1 dscp marking in a queue ? Not really. The point of Weighted RED is to assign different weights to different traffic classes. Doesn't make much ...
Ron Trunk's user avatar
  • 67.7k
2 votes
Accepted

Bandwidth hogging on managed switched network 17 users

QoS mechanisms only come into effect when there is congestion on the link. If you have a 20M circuit but connected to a 1G interface, your device will never recognize the congestion because the ...
John K.'s user avatar
  • 969
2 votes
Accepted

QoS (802.1p) for iSCSI Traffic on Cisco Nexus 3048

If the clasification isn't available on the switch model, then you need to look at something like ACL-based QoS classification (Layers 2, 3, and 4) so that you can mark what traffic, by IP address ...
SleepyMan's user avatar
  • 2,016
2 votes
Accepted

Match cos is not supported for this interface in the output direction

i find a success method to policy a traffic of Specify ip's or else on CISCO ASR 903 IOS XE 3.18S for example i have ip's 74.0.0.0/8 for some serivce (Like google) 1-subnet a full range from 1.0.0....
Anas Programmer's user avatar
1 vote
Accepted

Where is priority for a particular frame set?

From the Catalyst 4000 documentation: ISL or 802.1Q frames are not classified or marked at the ingress port; the existing CoS value is honored. When an 802.1Q frame enters the switch through a ...
user84425's user avatar
1 vote

QoS - Add DSCP EF tag with L2 switches?

More than likely, packets from the phone have the correct DSCP values: EF for the data, and something like AF31 for the control traffic (you really do not want the control traffic marked as EF). Your ...
Ron Maupin's user avatar
  • 99.9k
1 vote
Accepted

How do you schedule traffic that exits via a bridge-domain?

So I just came up with a hideous hack that gives the desired result: firewall { family inet { filter DSCP-CLASSIFIER { term MATCH-EF { from { ...
Benjamin Dale's user avatar

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