Enterprise QoS Solution Reference Network Design Guide
Enterprise QoS Solution Reference Network Design Guide
Enterprise QoS Solution Reference Network Design Guide
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Chapter 2 Campus <strong>QoS</strong> <strong>Design</strong><br />
Version 3.3<br />
CAT3550#<br />
class-map: class-default (match-any)<br />
0 packets, 0 bytes<br />
5 minute offered rate 0 bps, drop rate 0 bps<br />
match: any<br />
0 packets, 0 bytes<br />
5 minute rate 0 bpsqm_police_inform_feature: CLASS_SHOW<br />
Catalyst 3550—<strong>QoS</strong> Considerations and <strong>Design</strong><br />
Note Currently, the counters reported via the show policy interface command on the Catalyst 3550 are not<br />
being incremented (i.e., all counters are currently frozen at zero), as is the case with the mainline IOS<br />
version of this command. A bug has been reported which, when fixed, should result in the counters<br />
incrementing dynamically. Catalyst 3550 IOS versions tested and affected with this bug include<br />
12.1(19)EA1 a through c and 12.1(20)EA1.<br />
Catalyst 3550—Untrusted Server with Scavenger-Class <strong>QoS</strong> Model<br />
Configuration<br />
This section includes the following topics:<br />
Configuration<br />
Catalyst MLS <strong>QoS</strong> Verification Commands<br />
The Catalyst 3550 fully supports the Untrusted Multi-Application Server with Scavenger-Class <strong>QoS</strong><br />
model, as depicted in Figure 2-5. The configuration for this model is shown below.<br />
Example 2-19 Catalyst 3550—Untrusted Multi-Application Server with Scavenger-Class <strong>QoS</strong><br />
Configuration<br />
CAT3550(config)#mls qos map policed-dscp 0 10 18 25 to 8<br />
! Excess traffic marked 0 or AF11 or AF21 or DSCP 25 will be remarked to CS1<br />
CAT3550(config)#<br />
CAT3550(config)#class-map SAP<br />
CAT3550(config-cmap)# match access-group name SAP<br />
CAT3550(config-cmap)#class-map LOTUS<br />
CAT3550(config-cmap)# match access-group name LOTUS<br />
CAT3550(config-cmap)#class-map IMAP<br />
CAT3550(config-cmap)# match access-group name IMAP<br />
CAT3550(config-cmap)#exit<br />
CAT3550(config)#<br />
CAT3550(config)#policy-map UNTRUSTED-SERVER<br />
CAT3550(config-pmap)#class SAP<br />
CAT3550(config-pmap-c)# set ip dscp 25 ! SAP is marked as Mission-Critical<br />
CAT3550(config-pmap-c)# police 15000000 8000 exceed-action policed-dscp-transmit<br />
! Out-of-profile SAP is marked down to Scavenger (CS1)<br />
CAT3550(config-pmap-c)#class LOTUS<br />
CAT3550(config-pmap-c)# set ip dscp 18 ! Lotus is marked as Transactional<br />
CAT3550(config-pmap-c)# police 35000000 8000 exceed-action policed-dscp-transmit<br />
! Out-of-profile LOTUS is marked down to Scavenger (CS1)<br />
CAT3550(config-pmap-c)#class IMAP<br />
CAT3550(config-pmap-c)# set ip dscp 10 ! IMAP is marked as Bulk Data<br />
CAT3550(config-pmap-c)# police 50000000 8000 exceed-action policed-dscp-transmit<br />
! Out-of-profile IMAP is marked down to Scavenger (CS1)<br />
CAT3550(config-pmap-c)#class class-default<br />
<strong>Enterprise</strong> <strong>QoS</strong> <strong>Solution</strong> <strong>Reference</strong> <strong>Network</strong> <strong>Design</strong> <strong>Guide</strong><br />
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