Cisco WS-X6416-GE-MT - Interface Module - Expansion Manuale Utente Scaricare il pdf (Pagina 40)

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User-Based Rate Limiting (UBRL) on the Cisco Catalyst 6500 Supervisor Engine 32 and

Cisco Catalyst 6500 Series Supervisor Engine 720 with Cisco IOS Software Only

User-Based Rate Limiting functionality is supported only on the Cisco Catalyst 6500 Supervisor

Engine 32 and Cisco Catalyst 6500 Series Supervisor Engine 720 and is a microflow policing

function which provides a means to rate limit many source or destination IP addresses to an

individual rate. This configuration requires only two ACLs and can support a large number of

users. Only supported in Cisco IOS Software, the example below demonstrates UBRL by rate

limiting traffic from each user in a user-group to 1 Mbps each, going to the subnet 192.168.0.0/16:

Cisco Catalyst OS Cisco IOS Software

Not Supported Access-list 101 permit ip any 192.168.0.0 0.0.255.255

Class-map 1Mbps-rate

Match access-group 101

Policy-map Outbound

Class 1Mbps-rate

Police flow mask src-only 1000000 …

Int gig 3/1

Service-policy input Outbound

Marking with an ACL

You can set the priority fields in a frame (CoS, DSCP, or ToS) for specific traffic classes that match

an ACL. This gives the user more granularity and functionality than what is provided by marking

with default port CoS values.

PFC QoS (Cisco IOS Software Release 12.1(12c)E1) supports policy map class marking for

untrusted traffic with the set ip dscp and set ip precedence policy map class commands.

The following table provides a comparison of the different configuration parameters for each

operating system.

Cisco Catalyst OS Cisco IOS Software

set qos acl ip CatOS dscp 24 any

commit qos acl CatOS

set qos acl map CatOS 3/1

access-list 101 permit ip any any

policy-map IOS

class IOS access-group 101

set ip dscp 24

interface gigabitethernet 3/1

service-policy input IOS

AutoQoS

AutoQoS is a macro which simplifies QoS configuration required for implementing recommended

Cisco Architecture for Voice, Video and Data (AVVID) settings on a voice port. AutoQos is

supported in the Cisco Catalyst OS and in Cisco IOS Software beginning with Cisco IOS Software

Release 12.2(33)SXH.

For the Cisco Catalyst OS the macro is divided into two separate components:

●

Global automatic QoS command (set qos auto): Deals with all switch-wide QoS-related

settings, not specific to an interface.

●

Port-specific automatic QoS command (set port qos mod/port autoqos): Configures all

inbound QoS parameters for a particular port to reflect desired traffic type.

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Cisco WS-X6416-GE-MT - Interface Module - Expansion Manuale Utente Pagina 40

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