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Hi.
My setup:
P3 box, a few ethernet interfaces (eepro100) shaping traffic to some of my
customers. It's been working fine for more than a year. Each interface has a
root cbq qdisc with n (=num of customers) classes, u32 filters are used to
classify the packets according to src/dst addresses. These are the commands
used (taken from a perl script which parses a simple config file, therefore
the $ variables):
/sbin/tc qdisc add dev $device root handle $handle cbq bandwidth $bandwidth
avpkt 1000
/sbin/tc class add dev $device parent $rh{$device}0 classid $handle cbq
bandwidth 100mbit rate $bandwidth allot 1514 weight 100kbit prio 1 maxburst 1
avpkt 1000 bounded
/sbin/tc filter add dev $device parent $rh{$device}0 protocol ip prio 100 u32
match ip $direction $netblock flowid $handle
I tried moving this to a new machine using only 2 eepro100 interfaces and
using vlans (one port per customer is really quite expensive on an Extreme
switch :-), but suddenly the shaping stopped working as supposed.
For instance, I have a customers shaped to 512 kbps, but instead of that they
only get ~250 kbps. Changing the rate of the class does not make much
difference. Pushing it up to 2048kbps only changes the clients real bandwidth
to ~340 kbps. The kernel is stock 2.4.18, eepro100 driver is patched (one
line) to support VLANs and that's the only change from the old machine. Any
ideas? Shaping on a "normal" (non-vlan) interface seems to work OK.
BTW (offtopic), anyone knows of a more compact changelog for kernel 2.4.19? I
don't have time to read all the bk mumbo-jumbo, I only want to know the major
differences. 25MB diff scared me a little when it came out :-)
regards,
- --
Borut Mrak, b@aufbix.org
PGP: finger:b@aufbix.org
- ------------------------
"Great minds discuss ideas; Average minds discuss events; Small minds
discuss people."
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