DELL S50V User Manual

Service Provider Bridging | 963

You must enable Drop Eligibility globally before you can honor or mark the DEI value.

When Drop Eligibility is enabled, DEI mapping or marking takes place according to the defaults. In this 
case, the CFI is affected according to 

.

To honor the incoming DEI value, you must explicitly map the DEI bit to an FTOS drop precedence; 
precedence can have one of three colors:

Make packets eligible for dropping based on their DEI value. By 
default, packets are colored green, and DEI is marked 0 on egress.

CONFIGURATION

Normal Port

Normal Port

Retain CFI

Set CFI to 0

Trunk Port

Trunk Port

Retain inner tag CFI

Retain inner tag CFI

Retain outer tag CFI

Set outer tag CFI to 0

Access Port

Trunk Port

Retain inner tag CFI

Retain inner tag CFI

Set outer tag CFI to 0

Set outer tag CFI to 0

Green

High priority packets that are the least preferred to be dropped.

Yellow

Lower priority packets that are treated as best-effort.

Red

Lowest priority packets that are always dropped (regardless of 
congestion status).

Honor the incoming DEI value by mapping it to an 
FTOS drop precedence. You may enter the 
command once for 0 and once for 1. Packets with an 
unmapped DEI value are colored green.

 

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INTERFACE

Display the DEI-honoring configuration.

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EXEC Privilege