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Dell#
Classifying Layer 2 Traffic on Layer 3 Interfaces
To process Layer 3 packets that contain Dot1p — (IEEE 802.1p) Packet classification (Layer 2 headers), configure VLAN tags
on a physical Layer 3 interface (that is configured with an IP address and is not associated with any VLAN). You can also
configure a VLAN subinterface over a physical underlying interface and classify packets using the dot1p value.
To apply an input policy map to Layer 3 physical interfaces, use the service-policy input policy-name layer 2
command in Interface Configuration mode.
To apply a Layer 2 policy on Layer 3 interfaces, perform the following:
1. Configure an interface with an IP address or a VLAN subinterface
CONFIGURATION mode
Dell(conf)# int fo 0/0
INTERFACE mode
Dell(conf-if-fo-0/0)# ip address 90.1.1.1/16
2. Configure the Layer 2 policy with Layer 2 (Dot1p or source MAC-based) classification rules.
CONFIGURATION mode
Dell(conf)# policy-map-input l2p layer2
3. Apply the Layer 2 policy on the Layer 3 interface.
INTERFACE mode
Dell(conf-if-fo-0/0)# service-policy input l2p layer2
Classifying Packets Based on a Combination of DSCP Code Points
and VLAN IDs
You can configure a classifier map, which contains both the Differentiated Services Code Point (DSCP) and MAC VLAN IDs as
parameters, for filtering packets that are received before they are forwarded or dropped. You can now specify both DSCP-IP
packet classification (Layer 3 headers) and Dot1p—(IEEE 802.1p) Packet classification (Layer 2 headers) as match criteria in a
Layer 3 class map.
The type of the class map is determined during the creation of a class map. In releases of Dell Networking OS earlier than
Release 9.2(0.0), you can configure only the dot1p value as the filter criterion in Layer 2 class maps and the DSCP value as the
filter parameter in Layer 3 class maps. It was also possible to classify packets using both the Layer 2 attribute, dot1p value or
MAC VLAN, in a Layer 2 class map and the Layer 3 attribute, DSCP value, in a Layer 3 class map. However, it was not possible
to configure both dot1p or MAC VLAN, and DSCP values in the same Layer 2 or Layer 3 class map.
All class maps are Layer 3 by default. You can now configure a Layer 3 class map to differentiate traffic according to the IP
VLAN value and the DSCP value. You can use the match ip vlan vlan-id command in Class Map Input Configuration
mode to specify a match criterion for a class map based on a VLAN ID. You can attach this class map with a policy map, and
associate the policy map with a service queue. When you link class maps to queues using the service-queue command, Dell
Networking OS matches the class-maps according to queue priority (queue numbers closer to 0 have lower priorities).
To create IP VLAN and DSCP values as match criteria in a Layer 3 class map, and to associate the class map with a policy map
that is linked to a service queue, perform the following:
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Quality of Service (QoS)