Subject: [tsvwg] DSCP and 802.1Q prioirty

From: "Pat (Patricia) Thaler" <[email-masked]>
Date: Fri, 6 Nov 2015 02:15:45 +0000

After the discussion on DSCP mapping to IEEE 802.1Q priority yesterday, I realized that there is something that I should have mentioned.

In IEEE 802.1Qcd, we added the ability to use the Application Priority TLV (an LLDP TLV defined originally in IEEE 802.1Qaz for Data Center Networking Configuration Exchange, DCBX) to indicate mapping from DSCP to  802.1Q Priority.

DCBX was created partly because bridges/switches are often configured by network administration but end nodes often aren't so this gives a way for the end node to get the information on how the priorities are used when it attaches to the network.

This TLV would be something to mention if there is an RFC developed on relationship between DSCP and 802.1Q prioiries.

Regards,
Pat