netdev - [iproute2] iproute2 question

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Date:	Tue, 23 Mar 2010 01:12:57 +0800
From:	thomas yang <lampsu@...il.com>
To:	netdev@...r.kernel.org
Subject: [iproute2] iproute2 question

>>
>> I want to reduce the packet loss that happens while routers converge
>> after a topology change due to a failure, use precalculated backup
>> table to do rapid failure repair  (repair faster than routing daemon,
>> fast reroute).
>> I do static routing on my linux routers.  When  some link  failed,
>>  I want to  use backup tables to route packets.  Can iproute2 do this?
>
> You could probably kludge something with multiple route tables
> and modifying a single 'ip rule'.
> Something like:
>   http://www.linuxhorizon.ro/iproute2.html
>

I want to use different routing tables  with different  TOS (or DSCP)
e.g.
iptables -t mangle -A PREROUTING -j TOS --set-tos 0x10
...
then,
ip rule add tos 0x10 table 100
ip rule add tos 0x08 table 200
...
but there are only five TOS values  0x00,0x02,0x04,0x08,0x10. I need
more TOS values.

Does cmd 'ip rule' support DSCP ? (e.g. 'ip rule add dscp 0x11 tables 10')
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