Chapter 13: Quality of Service 237
Section 13-2
The dscp value can be given as a number (6 bits, 0 to 63) or as a text string name. Available
names are default (000000), ef (101110), (Assured Forwarding, AF) af11 (001010), af12
(001100), af13 (001110), af21 (010010), af22 (010100), af23 (010110), af31 (011010),
af32 (011100), af33 (011110), af41 (100010), af42 (100100), af43 (100110), (Class
Selector, CS) cs1 (precedence 1, 001000), cs2 (precedence 2, 010000), cs3 (precedence 3,
011000), cs4 (precedence 4, 100000), cs5 precedence 5, 101000), cs6 (precedence 6,
110000), and cs7 (precedence 7, 111000).
The switch also allows the tos keyword to match the ToS level (0 to 15). Available values
are max-reliability, max-throughput, min-delay, min-monetary-cost, and normal.
a. (Optional) Match IP traffic by source address:
(global) access-list acc-list-number {permit | deny} ip source-ip
source-mask
OR
(global) ip access-list standard acl-name
(access-list) {permit | deny} source-ip [source-mask]
The access list is referenced by its name acl-name (text string) or by its number
acc-list-number (1 to 99 or 1300 to 1999).
b. (Optional) Match IP traffic by source, destination, and port number:
(global) access-list acc-list {permit | deny} protocol source-ip source-
mask [operator [source-port]] destination-ip destination-mask [operator
[dest-port]] [precedence precedence] [dscp dscp] [tos tos]
OR
(global) ip access-list extended acl-name
(access-list) {permit | deny} protocol source-ip source-mask [operator
[source-port]] destination-ip destination-mask [operator [dest-port]]
[precedence precedence] [dscp dscp] [tos tos]
The access list is referenced by its name acl-name (text string) or by its number
access-list-number (100 to 199 or 2000 to 2699).
An IP protocol can be specified. The protocol can be one of ip (any IP proto-
col), tcp, udp, eigrp (EIGRP routing protocol), gre (Generic Routing
Encapsulation), icmp (Internet Control Message Protocol), igmp (Internet Group
Management Protocol), igrp (IGRP routing protocol), ipinip (IP-in-IP tunnel),
nos, ospf (OSPF routing protocol), or an IP protocol number (0 to 255).
An operator can be specified to determine how the source and destination port
numbers are to be matched. You can use the operators lt (less than), gt (greater
than), eq (equal to), neq (not equal to), or range (within a range given by two
To Next Page
Loading...
Need help?
General