Re: [LARTC] urgent help needed in iproute2+tc

[Ravikanth Samprathi <rsamprat@cisco.com>]

Hi,
One more requirement is the following:-
All the packets from the voip source (with a particular ip address, with a 
particular source, arriving on a particular interface) must have the TOS 
byte changed to the
value 0x06,
can u let me know how to do this please?
Thenx in Advance.
ravi

At 01:18 AM 4/16/2001 +0700, Junus Junarto D wrote:
>Hi Ravi,
>
>First you must know what port is used on voip.
>To check the correct port of voip, you can use Etherreal, tcpdump or
>Sniffer.
>I guess it is the same as H.323 on MS NetMeeting used with UDP port 1720.
>Port 1720 = 0x06B8.
>
>In here we use priority and simple FIFO queuing. Both queuing are used in
>ordinary Cisco Routers.
>Below is the commands:
>
>------------------------------
>###### To control eth0 ######
>#Create Priority queuing (minimum 3 bands)
>tc qdisc add dev eth0 root handle 1: prio bands 3 priomap 0 1 2
>
>#Create FIFO queuing and attach to priority queuing
>tc qdisc add dev eth0 parent 1:1 handle 2: pfifo limit 1024
>tc qdisc add dev eth0 parent 1:2 handle 3: pfifo limit 1024
>tc qdisc add dev eth0 parent 1:3 handle 4: pfifo limit 1024
>
>#Installing a u32 classifier for the traffic
>#In Cisco router 'tc filter' command has same function as access-list
>tc filter add dev eth0 parent 1:0 protocol ip prio 1 u32 divisor 1
>
># Filter UDP traffic which has destination port 1720 (0x06B8) and direct
>#   this traffic to class 1:1 (FIFO priority 1)
>tc filter add dev eth0 parent 1:0 prio 1 u32 match udp src 0x06B8 0xffff \
>flowid 1:1
># Filter UDP traffic which has source port 1720 (0x06B8) and direct this
>#   traffic to class 1:1 (FIFO priority 1)
>tc filter add dev eth0 parent 1:0 prio 1 u32 match udp dst 0x06B8 0xffff \
>flowid 1:1
>
>###### To control eth1 ######
>#Create Priority queuing (minimum 3 bands)
>tc qdisc add dev eth1 root handle 1: prio bands 3 priomap 0 1 2
>
>#Create FIFO queuing and attach to priority queuing
>tc qdisc add dev eth1 parent 1:1 handle 2: pfifo limit 1024
>tc qdisc add dev eth1 parent 1:2 handle 3: pfifo limit 1024
>tc qdisc add dev eth1 parent 1:3 handle 4: pfifo limit 1024
>
>#Installing a u32 classifier for the traffic
>#In Cisco router 'tc filter' command has same function as access-list
>tc filter add dev eth1 parent 1:0 protocol ip prio 1 u32 divisor 1
>
># Filter UDP traffic which has destination port 1720 (0x06B8) and direct
>#   this traffic to class 1:1 (FIFO priority 1)
>tc filter add dev eth1 parent 1:0 prio 1 u32 match udp src 0x06B8 0xffff \
>flowid 1:1
># Filter UDP traffic which has source port 1720 (0x06B8) and direct this
>#   traffic to class 1:1 (FIFO priority 1)
>tc filter add dev eth1 parent 1:0 prio 1 u32 match udp dst 0x06B8 0xffff \
>flowid 1:1
>
>###### To control eth2 ######
>#Create Priority queuing (minimum 3 bands)
>tc qdisc add dev eth2 root handle 1: prio bands 3 priomap 0 1 2
>
>#Create FIFO queuing and attach to priority queuing
>tc qdisc add dev eth2 parent 1:1 handle 2: pfifo limit 1024
>tc qdisc add dev eth2 parent 1:2 handle 3: pfifo limit 1024
>tc qdisc add dev eth2 parent 1:3 handle 4: pfifo limit 1024
>
>#Installing a u32 classifier for the traffic
>#In Cisco router 'tc filter' command has same function as access-list
>tc filter add dev eth2 parent 1:0 protocol ip prio 1 u32 divisor 1
>
># Filter UDP traffic which has destination port 1720 (0x06B8) and direct
>#   this traffic to class 1:1 (FIFO priority 1)
>tc filter add dev eth2 parent 1:0 prio 1 u32 match udp src 0x06B8 0xffff \
>flowid 1:1
># Filter UDP traffic which has source port 1720 (0x06B8) and direct this
>#   traffic to class 1:1 (FIFO priority 1)
>tc filter add dev eth2 parent 1:0 prio 1 u32 match udp dst 0x06B8 0xffff \
>flowid 1:1
>------------------------------
>
>
>I haven't tried it before. Let me know it can work or not.
>
>Regards,
>
> > Date: Tue, 10 Apr 2001 16:23:43 -0700
> > To: lartc@mailman.ds9a.nl
> > From: Ravikanth Samprathi <rsamprat@cisco.com>
> > Subject: [LARTC] urgent help needed in iproute2+tc
> >
> > Hi all,
> > I am running linux-2.4.0 with
> > 3 interfaces - eth0, eth1, and eth2.
> >
> > eth0 is the outgoing WAN interface.
> > eth1 and eth2 are the internal LAN interfaces.
> > eth1 and eth2 belong to a bridge group br0.
> > eth1 is connected to a voice-over-ip phone.
> > eth2 is connected to a pc.
> >
> > so, the setup is
>                         ------------------------------
>                         |                            |
>          voip-phone --->| eth1  --->                 |
>                         |   br0                eth0 -|---WAN
>       lan-pc ---------->| eth2 ---->                 |
>                         ------------------------------
> >
> > voip-phone can talk with lan-pc
> > through-the-bridge-group.
> > voip phone can also talk with any other
> > phone in the outside-world-through-the-WAN.
> >
> > I need to setup QoS so that all packets
> > from voip-phone (that is destined to either
> > eth1, eth2 or to eth0) are provided with
> > high-priority-low-delay service.  voip-phone
> > can be on any lan-interface (eth1 or eth2).
> > The only thing that can be surely said
> > about the voip-phone is that it will
> > have only a particular set of ip addresses
> > ranging from 171.72.233.100 to 171.72.233.200.
> >
> > To implement this, i downloaded the
> > iproute2+tc tool version
> > iproute2-2.2.4-now-ss991023.tar.gz
> > and went through the README files.
> >
> > Can somebody please help me in
> > writing the commands?  That will
> > be of great help.
> >
> > Thanking you in advance,
> > ravi
> >
> >
> > --------------------------------------------------->
> > Ravi Samprathi   work:(408)853-8038
> > Cisco Systems   res  :(408)988-2268
> > Empowering the  Internet Generation
> > <---------------------------------------------------
> >
> >
> >
> >
>
>
>
>
>
>
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--------------------------------------------------->
Ravi Samprathi   work:(408)853-8038
Cisco Systems   res  :(408)988-2268
Empowering the  Internet Generation
<---------------------------------------------------



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