Extended ACL Instance
14-11
Usage Guidelines
This command marks traffic between networks/hosts based on the protocol type selected
in the access list configuration
Use the mark option to specify the t
ype of service
(tos) and priority value. The tos value is
marked in the IP header and the 802.1p priority value is marked in the dot1q frame.
• The following types of protocols are supported:
• ip
• icmp
• tcp
• udp
Whenever the interface receives the packet, its content is checked against all ACEs in the
ACL. It is marked based on the ACL configuration
• Filtering protocol types TCP/UDP allows the user to specify port numbers as filtering
criteria
• Select ICMP to allow/deny ICMP packets. Selecting ICMP allows you to filter packets
based on the ICMP type and code
Example
The example below marks the dot1p priority value in the ethernet header to 5 on all TCP
traffic coming from the source subnet:
WS5100(config-ext-nacl)#mark 8021p 5 tcp 192.168.2.0/24 any
WS5100(config-ext-nacl)#
The example below marks the tos value in the IP header to 245 on all tcp traffic coming
from the source subnet:
WS5100(config-ext-nacl)#mark tos 245 tcp 192.168.2.0/24 any
WS5100(config-ext-nacl)#
NOTE:
The log option is functional only for router ACL’s. The log option
provides an informational logging message about the packet matching
the entry sent to the console.
Summary of Contents for WS5100 Series
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