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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-06
Chapter 33 Configuring QoS
Configuring QoS
This example shows how to create an ACL that permits IP traffic from any source to any destination that
has the DSCP value set to 32:
Switch(config)# access-list 100 permit ip any any dscp 32
This example shows how to create an ACL that permits IP traffic from a source host at 10.1.1.1 to a
destination host at 10.1.1.2 with a precedence value of 5:
Switch(config)# access-list 100 permit ip host 10.1.1.1 host 10.1.1.2 precedence 5
Creating Layer 2 MAC ACLs
Beginning in privileged EXEC mode, follow these steps to create a Layer 2 MAC ACL for non-IP traffic:
To delete an access list, use the no mac access-list extended access-list-name global configuration
command.
This example shows how to create a Layer 2 MAC ACL with two permit statements. The first statement
allows traffic from the host with MAC address 0001.0000.0001 to the host with MAC
address
0002.0000.0001. The second statement allows only Ethertype XNS-IDP traffic from the host
with MAC address 0001.0000.0002 to the host with MAC address 0002.0000.0002.
Switch(config)# mac access-list extended maclist1
Switch(config-ext-macl)# permit 0001.0000.0001 0.0.0 0002.0000.0001 0.0.0
Switch(config-ext-macl)# permit 0001.0000.0002 0.0.0 0002.0000.0002 0.0.0 xns-idp
Switch(config-ext-macl)# exit
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
mac access-list extended name Create a Layer 2 MAC ACL by specifying the name of the list and enter
extended MAC ACL configuration mode.
Step 3
permit {host src-MAC-addr mask | any |
host dst-MAC-addr | dst-MAC-addr
mask} [type mask]
Always use the permit keyword for ACLs used as match criteria in QoS
policies.
• For src-MAC-addr, enter the MAC address of the host from which the
packet is being sent. You can specify in hexadecimal format (H.H.H),
use the any keyword for source 0.0.0, source-wildcard ffff.ffff.ffff, or
use the host keyword for source 0.0.0.
• For mask, enter the wildcard bits by placing ones in the bit positions
that you want to ignore.
• For dst-MAC-addr, enter the MAC address of the host to which the
packet is being sent. You can specify in hexadecimal format (H.H.H),
use the any keyword for source 0.0.0, source-wildcard ffff.ffff.ffff, or
use the host keyword for source 0.0.0.
• (Optional) For type mask, specify the Ethertype number of a packet
with Ethernet II or SNAP encapsulation to identify the protocol of
the packet. For type, the range is from 0 to 65535, typically specified
in hexadecimal. For mask, enter the don’t care bits applied to the
Ethertype before testing for a match.
Step 4
end Return to privileged EXEC mode.
Step 5
show access-lists [access-list-number |
access-list-name]
Verify your entries.
Step 6
copy running-config startup-config (Optional) Save your entries in the configuration file.