01-03-2007 11:13 PM - edited 03-05-2019 01:34 PM
Hi,
I am looking for a document which describes the procedures and connections between QoS and Q-in-Q. Something like "NAT order of operation".
Points I am interested in are for example:
- Which CoS value is set in the outer VLAN tag?
- Which VLAN tag does 'mls qos trust cos' trust?
- Would the CoS value of the inner VLAN tag be inherited/passed to the outer VLAN tag?
I am mainly using Cat3560 and Cat3750 with IOS 12.2(25)SED1 IP-Base.
kind regards
Mark
01-09-2007 02:05 PM
802.1Q tunneling is a 802.1Q-in-802.1Q technique. It retags the tagged packets from a customer port with a VLAN ID assigned to that customer while preserving the original customer VLAN IDs inside the tunnel.Refer URL for QoS feature
01-09-2007 11:20 PM
Hi,
thanks for your reply. Unfortunately this isn't the thing I'm looking for. What I'm trying to find is a description of how QoS and Q-in-Q play togehter. Something like:
- paket with 'inner' vlan tag comes in
- new 'outer' vlan tag is added to paket
- CoS value of 'inner' vlan tag is copied to 'outer' vlan tag
- qos subsystem manipulates / acts on cos value of 'outer' vlan tag
- and so on ...
So if someone out there knows how this really works, it would be nice if she/he would drop me a line
thanks in advance and kind regards
Mark
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