Re: QoS mapping
Ben Greear <[email protected]>
| Newsgroups | gmane.linux.drivers.vlan |
|---|---|
| Organization | Candela Technologies |
| Message-ID | <[email protected]> |
John T. Kamenik wrote: > On Aug 3, 2005, at 4:58 PM, Ben Greear wrote: > >> John T. Kamenik wrote: >> >>> I have a linux based bridge/router. On one side is a VLAN network, >>> and on the other an Ethernet network. The VLAN network uses the >>> user_priority field in the VLAN header to perform various forms of >>> QoS. The ethernet network does a similar thing with the IP ToS >>> bits. Is there an easy way to map the ToS bits to user_priority >>> and visa versa? And the solution cannot be "use a Cisco" :). >>> >> >> I'm sure the linux iptables code can somehow do the translation >> for you...but I don't know the exact details... >> > > Iptables is what I thought about using first. However, iptables does > not have an understanding of VLANs. At least not to my knowledge. > This means that iptables has no knowledge of the user_priority field > and therefore cannot map to or from it. Get VLAN to map .1q to skb->priority, and get ip tables to map skb->priority to ToS. (and vice versa). Ben -- Ben Greear <[email protected]> Candela Technologies Inc http://www.candelatech.com