Qos Account Layer2 Encapsulation - Cisco 4500M Command Reference Manual

qos account layer2 encapsulation

qos account layer2 encapsulation
To include additional bytes to be accounted by QoS features, use the qos account layer2 encapsulation
command. Use the no form of this command to disable the use of additional bytes.
Syntax Description
arpa
dot1q
isl
length len
Defaults
By default, only the length specified in the IP header for IP packets and the length specified in the
Ethernet header for non-IP packets is included.
Command Modes
Global configuration
Command History Release
12.1(19)EW
Usage Guidelines
In the Catalyst 4500 series switch, the qos account layer2 encapsulation command indicates that the
policing feature should consider the configured length in addition to the IP length of the packet when
policing IP packets.
Sharing and shaping always use the Ethernet ARPA length.
Note
The given length is included when policing all IP packets irrespective of the encapsulation with which
it was received. When qos account layer2 encapsulation isl is configured, a fixed length of 48 bytes is
included when policing all IP packets, not only those IP packets received with ISL encapsulation.
Sharing and shaping use the length specified in the Layer 2 headers.
Examples
This example shows how to include an additional 18 bytes when policing IP packets:
Switch# config terminal
Switch(conf)# qos account layer2 encapsulation length 18
Switch (conf)#
Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
2-210
qos account layer2 encapsulation {arpa | dot1q | isl | length len }
no qos account layer2 encapsulation {arpa | dot1q | isl | length len}
Account length of the Ethernet ARPA encapsulated packet (18 bytes).
Account length of the IEEE 802.1q encapsulated packet (22 bytes).
Account length of the ISL encapsulated packet (48 bytes).
Additional packet length to account for; valid range is from 0 to 64 bytes.
Modification
This command was first introduced.
Chapter2 Cisco IOS Commands for the Catalyst 4500 Series Switches
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