Migrating From a 12.2SX QoS Configuration

Note ● This appendix describes what happens during command migration; it does not describe the effect of any changes that you choose to make to the configuration after the migration completes.

  • Any mls qos commands that are entered at the CLI generate a warning and are ignored.

 

Tip For additional information about Cisco Catalyst 6500 Series Switches (including configuration examples and troubleshooting information), see the documents listed on this page:

http://www.cisco.com/en/US/products/hw/switches/ps708/tsd_products_support_series_home.html

Participate in the Technical Documentation Ideas forum

 

Command Migration

 

Table 1-1 Platform-Specific Global Command Migration

12.2SX Commands and Comments
Migration
Action
15.0SY Commands and Comments
mls qos
 
  • With no other configuration entered, the mls qos command enables significant changes in queueing and marking.
  • Conversion of the other 12.2SX QoS commands listed in this appendix occurs if the mls qos command exists in the configuration file that is being migrated.

Convert

auto qos default
Configures ingress queueing on ports to which an ingress queueing policy is not attached. Configures egress queueing on ports to which an egress queueing policy is not attached.

  • If the configuration does not contain the mls qos marking ignore port-trust command, migration implements a non-default configuration on each port to which a service policy is not attached:

– On each untrusted port, to duplicate the Release 12.2SX default port state (untrusted, which marks traffic), migration applies a platform qos trust none remark interface command, which marks all non-MPLS traffic.

– On each trusted port, migration applies the equivalent platform qos trust interface command (because platform qos trust dscp is the default, it is not required on a port that was configured with the mls qos trust dscp command).

Note

  • The auto qos default global configuration command does not enable QoS globally. 15.0SY does not have a global command to enable or disable QoS.
  • A service policy attached to an interface defines the QoS configuration of that interface. See the “Platform-Specific Policymap Command Migration” table for information about required manual configuration of some policy-map commands.
no mls qos
 
  • This is the default in Release 12.2SX.
  • Configured policies are not in effect and all QoS labels are preserved.

Ignore
  • No 15.0SY equivalent; corresponds to the 15.0SY default nonconfigurable condition.
  • Any configured policies are in effect.
  • For IPv4 and IPv6 traffic, received DSCP is preserved, received CoS is ignored and the traffic is assigned a CoS value based on received DSCP.
  • For MPLS traffic, received EXP is preserved, received CoS is ignored and the traffic is assigned a CoS value based on received EXP.
  • For traffic that does not have a DSCP value, received CoS is preserved.
mls qos queueing-only
 
  • Disables policing and marking (preserves all ingress QoS labels) regardless of any configured service policies.

Convert
platform qos queueing-only
 
  • Except on ports configured with service policies, disables policing and marking (preserves all ingress QoS labels).
  • Configures ingress queueing on ports to which an ingress queueing policy is not attached. Configures egress queueing on ports to which an egress queueing policy is not attached.
no mls qos rewrite ip dscp

Convert
no platform qos rewrite ip dscp
 
  • As soon as possible, replace this command with per-port DSCP transparency configured with the set discard-class or set cos commands in service policies.
mls qos marking ignore port-trust
 
  • In Release 12.2SX, policy trust commands are ignored on trusted ports unless mls qos marking ignore port-trust is configured.

Ignore

No 15.0SY equivalent; corresponds to the 15.0SY default condition.

  • In Cisco IOS Release 15.0SY, policy trust commands are alway honored and, if configured, will be in effect on trusted ports regardless of any configured interface commands.
  • Used as an indicator that any configured 12.2SX port trust commands can be ignored.
mls qos marking statistics
 
  • Release 12.2SX supports 1,023 aggregate policers and configuring this command uses some of the available policer count to provide marking statistics for unpoliced traffic classes.

Convert
platform qos marking statistics
 
  • Release 15.0SY supports 16,383 aggregate policers and configuring this command uses some of the available policer count to provide marking statistics for unpoliced traffic classes.
mls qos police serial

Ignore

No 15.0SY equivalent; corresponds to the 15.0SY default nonconfigurable condition.

mls qos police redirected

Ignore

No 15.0SY equivalent; corresponds to the 15.0SY default nonconfigurable condition.

mls qos map cos-dscp

Convert

table-map cos-discard-class-map

mls qos map dscp-cos

Convert

table-map discard-class-cos-map

mls qos map dscp-exp

Convert

table-map discard-class-exp-map

mls qos map exp-dscp

Convert

table-map exp-discard-class-map

mls qos map ip-prec-dscp
mls qos map precedence-dscp

Convert

table-map precedence-discard-class-map

mls qos map policed-dscp normal-burst

Convert

table-map policed-discard-class norm-burst-map

mls qos map policed-dscp max-burst

Convert

table-map policed-discard-class max-burst-map

mls qos aggregate-policer
 
  • Release 12.2SX supports configuration of up to 1,023 aggregate policers; some PFC QoS commands other than the police command are included in this count.

Convert
platform qos aggregate-policer
 
  • Cisco IOS Release 15.0SY supports configuration of up to 16,383 aggregate policers; some PFC QoS commands other than the police command are included in this count.
mls qos protocol

Convert
platform qos protocol
 
  • For DoS prevention.
mls qos statistics-export

Convert
platform qos statistics-export
 
  • For QoS statistics export.
mac packet-classify use vlan

Ignore

No 15.0SY equivalent; corresponds to the 15.0SY default nonconfigurable condition.

mls qos tunnel gre input uniform-mode

Ignore

No 15.0SY equivalent; corresponds to the 15.0SY default nonconfigurable condition.

 

Table 1-2 Platform-Specific Interface-Mode Command Migration

12.2SX Commands and Notes
Migration
Action
15.0SY Commands and Notes
mls qos vlan-based
 
  • The configured port trust state affects marking when the mls qos vlan-based interface command is configured.

Convert
platform qos vlan-based
 
  • The configured port trust state does not affect marking when the platform qos vlan-based interface command is configured.
  • A service policy attached to the Layer 3 VLAN interface defines QoS for ports where the platform qos vlan-based interface command is configured.
  • Service policies attached to ports configured with the platform qos vlan-based interface command are ignored.
mls qos trust cos
 
  • When the mls qos trust cos interface command is configured, unless the no mls qos rewrite ip dscp global configuration command is configured, ingress DSCP values are rewritten as defined in a CoS-to-DSCP map.
  • If configured, the mls qos trust cos interface command marks traffic when there are also applicable policy trust commands configured.

Convert
platform qos trust cos
 
  • Ignored if the platform qos vlan-based interface command is configured.
  • Ignored if there is an ingress service policy applied to the port and the platform qos vlan-based interface command is not configured.
  • Does not rewrite ingress DSCP values.
mls qos trust dscp
 
  • If configured, the mls qos trust dscp interface command marks traffic when there are also applicable policy trust commands configured.

Ignore

No 15.0SY equivalent; corresponds to the 15.0SY default nonconfigurable condition.

mls qos trust precedence
 
  • If configured, the mls qos trust precedence interface command marks traffic when there are also applicable policy trust commands configured.

Ignore

No 15.0SY equivalent; corresponds to the 15.0SY default condition. The lowest 3 bits of the ingress DSCP are not zeroed.

no mls qos trust

Convert
platform qos trust none remark
 
  • Ignored if the platform qos vlan-based interface command is configured.
  • Ignored if there is an ingress service policy applied to the port and the platform qos vlan-based interface command is not configured.
mls qos trust extend

Convert
platform qos trust extend
 
  • For IP phone support.
mls qos trust device

Convert
platform qos trust device
 
  • For IP phone support.
mls qos mpls trust experimental

Convert
platform qos mpls trust experimental
mls qos dscp-mutation

Convert
platform qos dscp-mutation
mls qos exp-mutation

Convert
platform qos exp-mutation
mls qos statistics-export

Convert
platform qos statistics-export
 
  • For QoS statistics export.
mls qos bridged

Ignore

No 15.0SY equivalent; automatically enabled or disabled as required by the microflow policing configuration.

mac packet-classify
 
  • Affects both ingress and egress traffic.
  • Can be configured on a restricted list of interfaces.

Convert
mac packet-classify input
 
  • Affects only ingress traffic.
  • The mac packet-classify output command affects only egress traffic.
mls qos loopback

Convert
platform qos loopback
mls qos queue-mode mode-dscp

Convert
platform qos queue-mode mode-dscp
mls qos cos
 
  • After traffic has been marked, the original ingress CoS value is overwritten.

Convert
platform qos cos
 
  • The original ingress CoS value remains known.

– By default, for IPv4 and IPv6 traffic, the ingress CoS value is overwritten by the DSCP value.

– By default, for other traffic that is not tagged, the ingress CoS value is used, rather than the configured port CoS value.

– Use the platform qos cos override interface command to use the value configured with the platform qos cos interface command instead of the original ingress CoS value.

wrr-queue bandwidth
wrr-queue cos-map
wrr-queue dscp-map
wrr-queue queue-limit
wrr-queue random-detect
wrr-queue threshold

Convert
wrr-queue bandwidth
wrr-queue cos-map
wrr-queue dscp-map
wrr-queue queue-limit
wrr-queue random-detect
wrr-queue threshold
 

Note These commands are in effect only if the platform qos queueing-only or the auto qos default global configuration command is configured.

rcv-queue bandwidth
rcv-queue cos-map
rcv-queue queue-limit
rcv-queue random-detect
rcv-queue threshold

Convert
rcv-queue bandwidth
rcv-queue cos-map
rcv-queue queue-limit
rcv-queue random-detect
rcv-queue threshold
 

Note These commands are in effect only if the platform qos queueing-only or the auto qos default global configuration command is configured.

priority-queue cos-map
priority-queue queue-limit

Convert
priority-queue cos-map
priority-queue queue-limit
 

Note These commands are in effect only if the platform qos queueing-only or the auto qos default global configuration command is configured.

mls qos channel-consistency

Convert
platform qos channel consistency
 

Note Enabled by the auto qos default global configuration command.

 

Table 1-3 Platform-Specific Policymap Command Migration

12.2SX Command
Migration
Action
15.0SY Command

These 12.2SX policy-map commands are propagated to the 15.0SY configuration, but must be replaced manually:

  • trust dscp :
    Default; not required.
  • trust ip precedence or trust precedence :
    Replace with set dscp precedence policy-map command or set-dscp-transmit precedence as the policing conform-action.
  • trust cos :
    Replace with set dscp cos policy-map command or set-dscp-transmit cos as the policing conform-action.
no trust

Ignore

No 15.0SY equivalent.

set {dscp | precedence} value

Convert
set {dscp | precedence} value
police... {exceed| violate} policed-dscp

Convert
police... {exceed| violate} policed-dscp
police flow...

Convert
police flow...
police aggregate...

Convert
police aggregate...

Global Configuration Command Queueing Parameters

These are the queueing parameters that are in effect when the auto qos default or platform qos queueing-only global configuration command is configured:

 

Queueing Parameter
Default Values
1q2t ingress queue
bandwidth allocation ratios

Not applicable
1q2t ingress queue limits

Not applicable

1q2t strict-priority ingress queue

Not applicable
1q2t standard ingress queue

Threshold 1

CoS

0, 1, 2, 3, and 4

DSCP

Not supported

Tail-drop

80%

WRED-drop

Not supported

Threshold 2

CoS

5, 6, and 7

DSCP

Not supported

Tail-drop

100% (not configurable)

WRED-drop

Not supported
1q8t ingress queue
bandwidth allocation ratios

Not applicable
1q8t ingress queue limits

Not applicable

1q8t strict-priority ingress queue

Not applicable
1q8t standard ingress queue

Threshold 1

CoS

0

DSCP

Not supported

Tail-drop

50%

WRED-drop

Not supported

Threshold 2

CoS

None

DSCP

Not supported

Tail-drop

50%

WRED-drop

Not supported

Threshold 3

CoS

1, 2, 3, 4

DSCP

Not supported

Tail-drop

60%

WRED-drop

Not supported

Threshold 4

CoS

None

DSCP

Not supported

Tail-drop

60%

WRED-drop

Not supported

Threshold 5

CoS

6 and 7

DSCP

Not supported

Tail-drop

80%

WRED-drop

Not supported

Threshold 6

CoS

None

DSCP

Not supported

Tail-drop

80%

WRED-drop

Not supported

Threshold 7

CoS

5

DSCP

Not supported

Tail-drop

100%

WRED-drop

Not supported

Threshold 8

CoS

None

DSCP

Not supported

Tail-drop

100%

WRED-drop

Not supported
1p1q4t ingress queue
bandwidth allocation ratios

Not applicable
1p1q4t ingress queue limits

Not applicable
1p1q4t strict-priority ingress queue

CoS

5

DSCP

Not supported

Tail-drop

100% (nonconfigurable)

WRED-drop

Not supported
1p1q4t standard ingress queue

Threshold 1

CoS

0 and 1

DSCP

Not supported

Tail-drop

50%

WRED-drop

Not supported

Threshold 2

CoS

2 and 3

DSCP

Not supported

Tail-drop

60%

WRED-drop

Not supported

Threshold 3

CoS

4

DSCP

Not supported

Tail-drop

80%

WRED-drop

Not supported

Threshold 4

CoS

6 and 7

DSCP

Not supported

Tail-drop

100%

WRED-drop

Not supported
1p1q8t ingress queue
bandwidth allocation ratios

Not applicable
1p1q8t ingress queue limits

Not applicable
1p1q8t strict-priority ingress queue

CoS

5

DSCP

Not supported

Tail-drop

100% (nonconfigurable)

WRED-drop

Not supported
1p1q8t standard ingress queue

Threshold 1

CoS

0

DSCP

Not supported

Tail-drop

Disabled; 70%

WRED-drop

Enabled; 40% low, 70% high

Threshold 2

CoS

1

DSCP

Not supported

Tail-drop

Disabled; 70%

WRED-drop

Enabled; 40% low, 70% high

Threshold 3

CoS

2

DSCP

Not supported

Tail-drop

Disabled; 80%

WRED-drop

Enabled; 50% low, 80% high

Threshold 4

CoS

3

DSCP

Not supported

Tail-drop

Disabled; 80%

WRED-drop

Enabled; 50% low, 80% high

Threshold 5

CoS

4

DSCP

Not supported

Tail-drop

Disabled; 90%

WRED-drop

Enabled; 60% low, 90% high

Threshold 6

CoS

6

DSCP

Not supported

Tail-drop

Disabled; 90%

WRED-drop

Enabled; 60% low, 90% high

Threshold 7

CoS

7

DSCP

Not supported

Tail-drop

Disabled; 100%

WRED-drop

Enabled;70% low, 100% high
2q8t ingress queue
bandwidth allocation ratios

90:10
2q8t ingress queue limits

Low priority: 80%

High priority: 20%

2q8t strict-priority ingress queue

Not applicable
2q8t standard ingress queue 2
(high priority)

Threshold 1

CoS

5

DSCP

Not supported

Tail-drop

100%

WRED-drop

Not supported

Thresholds 2–8

CoS

None

DSCP

Not supported

Tail-drop

100%

WRED-drop

Not supported
2q8t standard ingress queue 1
(low priority)

Threshold 1

CoS

0 and 1

DSCP

Not supported

Tail-drop

70%

WRED-drop

Not supported

Threshold 2

CoS

2 and 3

DSCP

Not supported

Tail-drop

80%

WRED-drop

Not supported

Threshold 3

CoS

4

DSCP

Not supported

Tail-drop

90%

WRED-drop

Not supported

Threshold 4

CoS

6 and 7

DSCP

Not supported

Tail-drop

100%

WRED-drop

Not supported

Thresholds 5–8

CoS

None

DSCP

Not supported

Tail-drop

100%

WRED-drop

Not supported
8q4t ingress queue
bandwidth allocation ratios

90:0:0:0:0:0:0:10
8q4t ingress queue limits

Low priority: 80%

Intermediate queues: 0%

High priority: 20%

8q4t strict-priority ingress queue

Not applicable
8q4t standard ingress queue 8
(high priority)

Threshold 1

CoS

5

DSCP

40 and 46

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 2

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 3

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 4

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high
8q4t standard ingress queue 7
(intermediate priority)

Threshold 1

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 2

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 3

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 4

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high
8q4t standard ingress queue 6
(intermediate priority)

Threshold 1

CoS

None

DSCP

48–63

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 2

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 3

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 4

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high
8q4t standard ingress queue 5
(intermediate priority)

Threshold 1

CoS

None

DSCP

32, 34–38

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 2

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 3

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 4

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high
8q4t standard ingress queue 4
(intermediate priority)

Threshold 1

CoS

None

DSCP

24 and 30

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 2

CoS

None

DSCP

28

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 3

CoS

None

DSCP

26

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 4

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high
8q4t standard ingress queue 3
(intermediate priority)

Threshold 1

CoS

None

DSCP

22

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 2

CoS

None

DSCP

20

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 3

CoS

None

DSCP

18

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 4

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high
8q4t standard ingress queue 2
(intermediate priority)

Threshold 1

CoS

None

DSCP

14

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 2

CoS

None

DSCP

12

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 3

CoS

None

DSCP

10

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 4

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high
8q4t standard ingress queue 1
(lowest priority)

Threshold 1

CoS

0 and 1

DSCP

0–9, 11, 13, 15–17, 19, 21, 23, 25, 27, 29, 31, 33, 39, 41–45, 47

Tail-drop

Disabled; 70%

WRED-drop

Enabled; 40% low, 70% high

Threshold 2

CoS

2 and 3

DSCP

None

Tail-drop

Disabled; 80%

WRED-drop

Enabled; 40% low, 80% high

Threshold 3

CoS

4

DSCP

None

Tail-drop

Disabled; 90%

WRED-drop

Enabled; 50% low, 90% high

Threshold 4

CoS

6 and 7

DSCP

None

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 50% low, 100% high
8q8t ingress-queue
bandwidth allocation ratios

90:0:0:0:0:0:0:10
8q8t ingress-queue limits

Lowest priority: 80%

Intermediate queues: 0%

Highest priority: 20%

8q8t strict-priority ingress queue

Not applicable
8q8t standard ingress queue 8
(highest priority)

Threshold 1

CoS

5

DSCP

Not supported

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Thresholds 2–8

CoS

None

DSCP

Not supported

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high
8q8t standard ingress queues 2–7
(intermediate priorities)

Thresholds 1–8

CoS

None

DSCP

Not supported

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high
8q8t standard ingress queue 1
(lowest priority)

Threshold 1

CoS

0 and 1

DSCP

Not supported

Tail-drop

Disabled; 70%

WRED-drop

Enabled; 40% low, 70% high

Threshold 2

CoS

2 and 3

DSCP

Not supported

Tail-drop

Disabled; 80%

WRED-drop

Enabled; 40% low, 80% high

Threshold 3

CoS

4

DSCP

Not supported

Tail-drop

Disabled; 90%

WRED-drop

Enabled; 50% low, 90% high

Threshold 4

CoS

6 and 7

DSCP

Not supported

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 50% low, 100% high

Thresholds 5–8

CoS

None

DSCP

Not supported

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 50% low, 100% high
1p7q2t ingress-queue
bandwidth allocation ratios

5:255
1p7q2t ingress-queue limits

Standard queue 1 (lowest priority): 50%

Standard queue 2: 20%

Standard queue 3: 15%

Standard queues 4 through 7: 0%

Strict priority 15%
1p7q2t strict-priority ingress queue

CoS

5

DSCP

40 and 46

Tail-drop

100% (nonconfigurable)

WRED-drop

Not supported
1p7q2t standard ingress queue 7
(intermediate priority)

Threshold 1

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 2

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high
1p7q2t standard ingress queue 6
(intermediate priority)

Threshold 1

CoS

None

DSCP

48–63

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 2

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high
1p7q2t standard ingress queue 5
(intermediate priority)

Threshold 1

CoS

None

DSCP

32, 34–38

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 2

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high
1p7q2t standard ingress queue 4
(intermediate priority)

Threshold 1

CoS

None

DSCP

24 and 30

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 2

CoS

None

DSCP

26 and 28

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high
1p7q2t standard ingress queue 3
(intermediate priority)

Threshold 1

CoS

6 and 7

DSCP

22

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high

Threshold 2

CoS

None

DSCP

18 and 20

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high
1p7q2t standard ingress queue 2
(intermediate priority)

Threshold 1

CoS

2

DSCP

14

Tail-drop

Disabled; 70%

WRED-drop

Enabled; 40% low, 70% high

Threshold 2

CoS

3 and 4

DSCP

10 and 12

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high
1p7q2t standard ingress queue 1
(lowest priority)

Threshold 1

CoS

0

DSCP

0–9, 11, 13, 15–17, 19, 21, 23, 25, 27, 29, 31, 33, 39, 41–45, 47

Tail-drop

Disabled; 70%

WRED-drop

Enabled; 40% low, 70% high

Threshold 2

CoS

1

DSCP

None

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high
1p3q8t egress-queue
bandwidth allocation ratios

100:150:200
1p3q8t egress-queue limits

Low priority: 50%

Medium priority: 20%

High priority: 15%

Strict priority 15%
1p3q8t strict-priority egress queue

CoS

5

DSCP

Not supported

Tail-drop

100% (nonconfigurable)

WRED-drop

Not supported
1p3q8t standard egress queue 3
(high priority)

Threshold 1

CoS

6 and 7

DSCP

Not supported

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high

Thresholds 2–8

CoS

None

DSCP

Not supported

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high
1p3q8t standard egress queue 2
(medium priority)

Threshold 1

CoS

2

DSCP

Not supported

Tail-drop

Disabled; 70%

WRED-drop

Enabled; 40% low, 70% high

Threshold 2

CoS

3 and 4

DSCP

Not supported

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high

Thresholds 3–8

CoS

None

DSCP

Not supported

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high
1p3q8t standard egress queue 1
(lowest priority)

Threshold 1

CoS

0

DSCP

Not supported

Tail-drop

Disabled; 70%

WRED-drop

Enabled; 40% low, 70% high

Threshold 2

CoS

1

DSCP

Not supported

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high

Threshold 3

CoS

None

DSCP

Not supported

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high

Threshold 4

CoS

None

DSCP

Not supported

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high

Thresholds 5–8

CoS

None

DSCP

Not supported

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 50% low, 100% high
1p7q4t egress-queue
bandwidth allocation ratios

100:150:200:0:0:0:0:0
1p7q4t egress-queue limits

Standard queue 1 (lowest priority): 50%

Standard queue 2: 20%

Standard queue 3: 15%

Standard queues 4 through 7: 0%

Strict priority queue: 15%
1p7q4t strict-priority egress queue

CoS

5

DSCP

40 and 46

Tail-drop

100% (nonconfigurable)

WRED-drop

Not supported
1p7q4t standard egress queue 7
(intermediate priority)

Threshold 1

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 2

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 3

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 4

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high
1p7q4t standard egress queue 6
(intermediate priority)

Threshold 1

CoS

None

DSCP

48–63

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 2

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 3

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 4

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high
1p7q4t standard egress queue 5
(intermediate priority)

Threshold 1

CoS

None

DSCP

32, 34–38

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 2

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 3

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 4

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high
1p7q4t standard egress queue 4
(intermediate priority)

Threshold 1

CoS

None

DSCP

24 and 30

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 2

CoS

None

DSCP

28

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 3

CoS

None

DSCP

26

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high

Threshold 4

CoS

None

DSCP

None

Tail-drop

Enabled; 100%

WRED-drop

Disabled; 100% low, 100% high
1p7q4t standard egress queue 3
(intermediate priority)

Threshold 1

CoS

None

DSCP

22

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high

Threshold 2

CoS

None

DSCP

20

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high

Threshold 3

CoS

None

DSCP

18

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high

Threshold 4

CoS

None

DSCP

None

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high
1p7q4t standard egress queue 2
(intermediate priority)

Threshold 1

CoS

None

DSCP

14

Tail-drop

Disabled; 70%

WRED-drop

Enabled; 40% low, 70% high

Threshold 2

CoS

None

DSCP

12

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high

Threshold 3

CoS

None

DSCP

10

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high

Threshold 4

CoS

None

DSCP

None

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high
1p7q4t standard egress queue 1
(lowest priority)

Threshold 1

CoS

0 and 1

DSCP

0–9, 11, 13, 15–17, 19, 21, 23, 25, 27, 29, 31, 33, 39, 41–45, 47

Tail-drop

Disabled; 70%

WRED-drop

Enabled; 40% low, 70% high

Threshold 2

CoS

2 and 3

DSCP

None.

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high

Threshold 3

CoS

4

DSCP

None.

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high

Threshold 4

CoS

6 and 7

DSCP

None.

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high
1p7q8t egress-queue
bandwidth allocation ratios

100:150:200:0:0:0:0
1p7q8t egress-queue limits

Standard queue 1 (lowest priority): 50%

Standard queue 2: 20%

Standard queue 3: 15%

Standard queues 4 through 7: 0%

Strict priority 15%
1p7q8t strict-priority egress queue

CoS

5

DSCP

Not supported

Tail-drop

100% (nonconfigurable)

WRED-drop

Not supported
1p7q8t standard egress queues 4–7
(intermediate and highest priorities)

Thresholds 1–8

CoS

None

DSCP

Not supported

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 100% low, 100% high
1p7q8t standard egress queue 3
(intermediate priority)

Threshold 1

CoS

6 and 7

DSCP

Not supported

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high

Thresholds 2–8

CoS

None

DSCP

Not supported

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 100% low, 100% high
1p7q8t standard egress queue 2
(intermediate priority)

Threshold 1

CoS

2

DSCP

Not supported

Tail-drop

Disabled; 70%

WRED-drop

Enabled; 40% low, 70% high

Threshold 2

CoS

3 and 4

DSCP

Not supported

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high

Thresholds 3–8

CoS

None

DSCP

Not supported

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high
1p7q8t standard egress queue 1
(lowest priority)

Threshold 1

CoS

0

DSCP

Not supported

Tail-drop

Disabled; 70%

WRED-drop

Enabled; 40% low, 70% high

Threshold 2

CoS

1

DSCP

Not supported

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high

Thresholds 3–8

CoS

None

Tail-drop

Disabled; 100%

WRED-drop

Enabled; 70% low, 100% high

Tip For additional information about Cisco Catalyst 6500 Series Switches (including configuration examples and troubleshooting information), see the documents listed on this page:

http://www.cisco.com/en/US/products/hw/switches/ps708/tsd_products_support_series_home.html

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