[LARTC] tc

Linux Advanced Routing and Traffic Control

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Hi,
 I am using the followings commands to execute to control bandwidth =
between

192.168.1.5 - 192.168.1.4 to 50Mbps

but when I run these series of commands and check the bandwidth between =
these I get only 19Mbps.=20

/sbin/tc qdisc del dev eth0 root

/sbin/tc qdisc add dev eth0 root handle 10: cbq bandwidth 100Mbit avpkt =
1000

/sbin/tc class add dev eth0 parent 10:0 classid 10:1 cbq bandwidth =
100Mbit rate 100Mbit weight 10Mbit maxburst 20 avpkt 1000 allot 1514 =
prio 3

/sbin/tc class add dev eth0 parent 10:1 classid 10:10 cbq bandwidth =
100Mbit rate 50Mbit weight 5Mbit maxburst 20 avpkt 1000 allot 1514 prio =
3 bounded

/sbin/tc filter add dev eth0 parent 10:0 protocol ip prio 3 u32 match ip =
dst 192.168.1.4 flowid 10:10

I am also displaying the output of qdisc and class of tc

---------------------------------------------------------------
# /sbin/tc -s qdisc show dev eth0

qdisc cbq 10: rate 100Mbit (bounded,isolated) prio no-transmit
 Sent 26177842 bytes 18063 pkts (dropped 0, overlimits 5406)
  borrowed 0 overactions 0 avgidle 62 undertime 0
-----------------------------------------------------------------
# /sbin/tc -s class show dev eth0

class cbq 10: root rate 100Mbit (bounded,isolated) prio no-transmit
 Sent 26792774 bytes 19823 pkts (dropped 0, overlimits 0)
  borrowed 0 overactions 0 avgidle 62 undertime 0
class cbq 10:10 parent 10:1 rate 50Mbit (bounded) prio 3
 Sent 24900652 bytes 16554 pkts (dropped 0, overlimits 7194)
  borrowed 0 overactions 1314 avgidle 1657 undertime 0
class cbq 10:1 parent 10: rate 100Mbit prio 3
 Sent 24900652 bytes 16554 pkts (dropped 0, overlimits 0)
  borrowed 0 overactions 0 avgidle 60 undertime 0

Thanks in advance,

regards,
Srikanth Goteti
Research Assitant,
Dept. of Computer Science,
University of Houston


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<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Hi,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&nbsp;I am using the followings =
commands to execute=20
to control bandwidth between</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>192.168.1.5 - 192.168.1.4 to =
50Mbps</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>but when I run these series of commands =
and check=20
the bandwidth between these I get only 19Mbps. </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>/sbin/tc qdisc del dev eth0 =
root<BR></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>/sbin/tc qdisc add dev eth0 root handle =
10: cbq=20
bandwidth 100Mbit avpkt 1000<BR></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>/sbin/tc class add dev eth0 parent 10:0 =
classid=20
10:1 cbq bandwidth 100Mbit rate 100Mbit weight 10Mbit maxburst 20 avpkt =
1000=20
allot 1514 prio 3</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>/sbin/tc class add dev eth0 parent 10:1 =
classid=20
10:10 cbq bandwidth 100Mbit rate 50Mbit weight 5Mbit maxburst 20 avpkt =
1000=20
allot 1514 prio 3 bounded</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>/sbin/tc filter add dev eth0 parent =
10:0 protocol=20
ip prio 3 u32 match ip dst 192.168.1.4 flowid 10:10<BR></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>I am also displaying the output of =
qdisc and class=20
of tc</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial=20
size=3D2>---------------------------------------------------------------<=
/FONT></DIV>
<DIV><FONT face=3DArial size=3D2># /sbin/tc -s qdisc show dev =
eth0<BR></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>qdisc cbq 10: rate 100Mbit =
(bounded,isolated) prio=20
no-transmit<BR>&nbsp;Sent 26177842 bytes 18063 pkts (dropped 0, =
overlimits=20
5406)<BR>&nbsp; borrowed 0 overactions 0 avgidle 62 undertime =
0</FONT></DIV>
<DIV><FONT face=3DArial=20
size=3D2>----------------------------------------------------------------=
-</FONT></DIV>
<DIV><FONT face=3DArial size=3D2># /sbin/tc -s class show dev =
eth0<BR></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>class cbq 10: root rate 100Mbit =
(bounded,isolated)=20
prio no-transmit<BR>&nbsp;Sent 26792774 bytes 19823 pkts (dropped 0, =
overlimits=20
0)<BR>&nbsp; borrowed 0 overactions 0 avgidle 62 undertime 0<BR>class =
cbq 10:10=20
parent 10:1 rate 50Mbit (bounded) prio 3<BR>&nbsp;Sent 24900652 bytes =
16554 pkts=20
(dropped 0, overlimits 7194)<BR>&nbsp; borrowed 0 overactions 1314 =
avgidle 1657=20
undertime 0<BR>class cbq 10:1 parent 10: rate 100Mbit prio =
3<BR>&nbsp;Sent=20
24900652 bytes 16554 pkts (dropped 0, overlimits 0)<BR>&nbsp; borrowed 0 =

overactions 0 avgidle 60 undertime 0<BR></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Thanks in advance,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>regards,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Srikanth Goteti</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Research Assitant,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Dept. of Computer Science,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>University of Houston</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&nbsp;</DIV></FONT></BODY></HTML>

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