Dell Networking S6000 Uživatelský manuál stáhnout pdf (Strana 768)

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Marking Egress Packets with a DEI Value

On egress, you can set the DEI value according to a different mapping than ingress.

For ingress information, refer to Honoring the Incoming DEI Value.

To mark egress packets, use the following command.

• Set the DEI value on egress according to the color currently assigned to the packet.

INTERFACE mode

dei mark {green | yellow} {0 | 1}

Example of Viewing DEI-Marking Configuration

To display the DEI-marking configuration, use the show interface dei-mark [interface slot/

port | linecard number port-set number] in EXEC Privilege mode.

Dell#show interface dei-mark

Default CFI/DEI Marking: 0

Interface Drop precedence CFI/DEI

--------------------------------

Gi 0/1 Green 0

Gi 0/1 Yellow 1

Gi 8/9 Yellow 0

Gi 8/40 Yellow 0

Dynamic Mode CoS for VLAN Stacking

One of the ways to ensure quality of service for customer VLAN-tagged frames is to use the 802.1p

priority bits in the tag to indicate the level of QoS desired.

When an S-Tag is added to incoming customer frames, the 802.1p bits on the S-Tag may be configured

statically for each customer or derived from the C-Tag using Dynamic Mode CoS. Dynamic Mode CoS

maps the C-Tag 802.1p value to a S-Tag 802.1p value.

Figure 108. Statically and Dynamically Assigned dot1p for VLAN Stacking

When configuring Dynamic Mode CoS, you have two options:

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Service Provider Bridging

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