On Sunday 03 August 2003 09:46, Tilman Giese wrote: > Hi, > > unfortunately I did not get any response to my last message, so let me > describe my problem in detail. > > I am setting up a router that is responsible for four different offices > > like shown below: > |--- Office 1 (192.168.100.242) > > __________ |--- Office 2 (192.168.100.243) > ---| Router |---| > ---------- |--- Office 3 (192.168.100.244) > > |--- Office 4 ------- 192.168.100.245 > | > |--- 192.168.100.246 > | > |--- 192.168.100.247 > > Each office should have one fourth of the available bandwidth, but can > borrow bandwidth if necessary. 192.168.0.246 in Office 4 is something > special. This server should have a maximum of one fourth. > > Therefore I created the following classes: > > # queuing discipline > tc qdisc add dev eth1 root handle 1: cbq bandwidth 2MBit allot 1514 cell > 8 avpkt 1000 mpu 64 > > # root class > tc class add dev eth1 parent 1:0 classid 1:1 cbq bandwidth 2MBit rate > 2MBit allot 1514 cell 8 weight 200KBit prio 5 maxburst 20 avpkt 1000 > > # offices > tc class add dev eth1 parent 1:1 classid 1:2 cbq bandwidth 2MBit rate > 512KBit allot 1514 cell 8 weight 50KBit prio 5 maxburst 20 avpkt 1000 > tc class add dev eth1 parent 1:1 classid 1:3 cbq bandwidth 2MBit rate > 512KBit allot 1514 cell 8 weight 50KBit prio 5 maxburst 20 avpkt 1000 > tc class add dev eth1 parent 1:1 classid 1:4 cbq bandwidth 2MBit rate > 512KBit allot 1514 cell 8 weight 50KBit prio 5 maxburst 20 avpkt 1000 > tc class add dev eth1 parent 1:1 classid 1:5 cbq bandwidth 2MBit rate > 512KBit allot 1514 cell 8 weight 50KBit prio 5 maxburst 20 avpkt 1000 > > # Special treatment for 192.168.100.246 > tc qdisc add dev eth1 parent 1:5 handle 2: cbq bandwidth 512KBit allot > 1514 cell 8 avpkt 1000 mpu 64 > tc class add dev eth1 parent 2:0 classid 2:1 cbq bandwidth 512KBit rate > 512KBit allot 1514 cell 8 weight 50KBit prio 5 maxburst 20 avpkt 1000 > tc class add dev eth1 parent 2:1 classid 2:2 cbq bandwidth 512KBit rate > 128KBit allot 1514 cell 8 weight 12KBit prio 5 maxburst 20 avpkt 1000 > > Then I added the following filters: > > tc filter add dev eth1 parent 1:0 prio 5 protocol ip u32 > tc filter add dev eth1 parent 1:0 prio 5 protocol ip u32 match ip dst > 192.168.100.242 flowid 1:2 > tc filter add dev eth1 parent 1:0 prio 5 protocol ip u32 match ip dst > 192.168.100.243 flowid 1:3 > tc filter add dev eth1 parent 1:0 prio 5 protocol ip u32 match ip dst > 192.168.100.244 flowid 1:4 > tc filter add dev eth1 parent 1:0 prio 5 protocol ip u32 match ip dst > 192.168.100.245 flowid 1:5 > tc filter add dev eth1 parent 1:0 prio 5 protocol ip u32 match ip dst > 192.168.100.247 flowid 1:5 > > # Special treatment for 192.168.100.246 > tc filter add dev eth1 parent 2:0 prio 5 protocol ip u32 > tc filter add dev eth1 parent 2:0 prio 5 protocol ip u32 match ip dst > 192.168.100.246 flowid 2:2 > > Everything okay up to here. But then I looked ar the following: > > # tc -s class show dev eth1 > > class cbq 2: root rate 512Kbit (bounded,isolated) prio no-transmit > Sent 261534164 bytes 433080 pkts (dropped 0, overlimits 0) > borrowed 0 overactions 0 avgidle 12499 undertime 0 > class cbq 2:1 parent 2: rate 512Kbit prio 5 > Sent 0 bytes 0 pkts (dropped 0, overlimits 0) > borrowed 0 overactions 0 avgidle 12499 undertime 0 > class cbq 2:2 parent 2:1 rate 128Kbit prio 5 > Sent 0 bytes 0 pkts (dropped 0, overlimits 0) > borrowed 0 overactions 0 avgidle 1.13741e+06 undertime 0 > class cbq 1: root rate 2Mbit (bounded,isolated) prio no-transmit > Sent 142271650091 bytes 210353356 pkts (dropped 0, overlimits 0) > borrowed 0 overactions 0 avgidle 3124 undertime 0 > class cbq 1:1 parent 1: rate 2Mbit prio no-transmit > Sent 2136522126 bytes 2961604 pkts (dropped 0, overlimits 0) > borrowed 432995 overactions 0 avgidle 3124 undertime 0 > class cbq 1:2 parent 1:1 rate 512Kbit prio 5 > Sent 6450824 bytes 12703 pkts (dropped 0, overlimits 0) > borrowed 7022 overactions 0 avgidle 282608 undertime 0 > class cbq 1:3 parent 1:1 rate 512Kbit prio 5 > Sent 1846942719 bytes 2448726 pkts (dropped 0, overlimits 0) > borrowed 420044 overactions 0 avgidle 284352 undertime 0 > class cbq 1:4 parent 1:1 rate 512Kbit prio 5 > Sent 21594419 bytes 67095 pkts (dropped 0, overlimits 0) > borrowed 5312 overactions 0 avgidle 284352 undertime 0 > class cbq 1:5 parent 1:1 leaf 2: rate 512Kbit prio 5 > Sent 261534164 bytes 433080 pkts (dropped 0, overlimits 0) > borrowed 617 overactions 0 avgidle 284352 undertime 0 > > Now I have two questions. > > 1. Why is the package count of class 2:0 equal to the one of class 1:5? Because all packets entering class 1:5 are queued in the qdisc attached to that class. And that qdisc is 2:0. > 2. Why are there no packets in class 2:2 and 2:1 respectively? You have a filter that puts packets from 2:0 to 2:2 if the dst address is X.X.X.246. But you never put these packets in the 2:0 qdisc ... So you have to add that filter to 1:0 and not to 2:0. And some other remarks. Bandwidth is the real NIC bandwidth. So 10mbit or 100mbit. And you have to bound class 1:1 so the child classes can share the bandwidth. And why do you add the qdisc 2:0? You can do this also with classes. A cbq qdisc to a cbq class is never a good idea. > It would be nice if someone could help me or show me a place where I can > find an answer to my questions. http://www.docum.org Stef -- stef.coene@xxxxxxxxx "Using Linux as bandwidth manager" http://www.docum.org/ #lartc @ irc.oftc.net
