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·tc -s qdisc ls dev eth0<br>
qdisc cbq 1: rate 10Mbit (bounded,isolated) prio no-transmit<br>
Sent 7646731 bytes 13232 pkts (dropped 0, overlimits 0)<br>
borrowed 0 overactions 0 avgidle 31 undertime 0<br>
<br>
　　这里主要显示了通过该队列发送了13232个数据包，数据流量为7646731个字节，丢弃的包数目为0，超过速率限制的包数目为0。<br>
<br>
2）显示分类的状况<br>
<br>
简单显示指定设备(这里为eth0)的分类状况<br>
·tc class ls dev eth0<br>
class cbq 1: root rate 10Mbit (bounded,isolated) prio no-transmit<br>
class cbq 1:1 parent 1: rate 10Mbit prio no-transmit #no-transmit表示优先级为8<br>
class cbq 1:2 parent 1:1 rate 8Mbit prio 2<br>
class cbq 1:3 parent 1:1 rate 1Mbit prio 1<br>
class cbq 1:4 parent 1:1 rate 1Mbit prio 6<br>
<br>
详细显示指定设备(这里为eth0)的分类状况<br>
·tc -s class ls dev eth0<br>
class cbq 1: root rate 10Mbit (bounded,isolated) prio no-transmit<br>
Sent 17725304 bytes 32088 pkts (dropped 0, overlimits 0)<br>
borrowed 0 overactions 0 avgidle 31 undertime 0<br>
class cbq 1:1 parent 1: rate 10Mbit prio no-transmit<br>
Sent 16627774 bytes 28884 pkts (dropped 0, overlimits 0)<br>
borrowed 16163 overactions 0 avgidle 587 undertime 0<br>
class cbq 1:2 parent 1:1 rate 8Mbit prio 2<br>
Sent 628829 bytes 3130 pkts (dropped 0, overlimits 0)<br>
borrowed 0 overactions 0 avgidle 4137 undertime 0<br>
class cbq 1:3 parent 1:1 rate 1Mbit prio 1<br>
Sent 0 bytes 0 pkts (dropped 0, overlimits 0)<br>
borrowed 0 overactions 0 avgidle 159654 undertime 0<br>
class cbq 1:4 parent 1:1 rate 1Mbit prio 6<br>
Sent 5552879 bytes 8076 pkts (dropped 0, overlimits 0)<br>
borrowed 3797 overactions 0 avgidle 159557 undertime 0<br>
<br>
　　这里主要显示了通过不同分类发送的数据包，数据流量，丢弃的包数目，超过速率限制的包数目等等。其中根分类(class cbq 1:0)的状况应与队列的状况类似。<br>
　　例如，分类class cbq 1:4发送了8076个数据包，数据流量为5552879个字节，丢弃的包数目为0，超过速率限制的包数目为0。<br>
<br>
显示过滤器的状况<br>
·tc -s filter ls dev eth0<br>
filter parent 1: protocol ip pref 100 route<br>
filter parent 1: protocol ip pref 100 route fh 0xffff0002 flowid 1:2 to 2<br>
filter parent 1: protocol ip pref 100 route fh 0xffff0003 flowid 1:3 to 3<br>
filter parent 1: protocol ip pref 100 route fh 0xffff0004 flowid 1:4 to 4<br>
<br>
这里flowid 1:2代表分类class cbq 1:2，to 2代表通过路由2发送。<br>
<br>
显示现有路由的状况<br>
·ip route<br>
192.168.1.66 dev eth0 scope link<br>
192.168.1.24 via 192.168.1.66 dev eth0 realm 2<br>
202.102.24.216 dev ppp0 proto kernel scope link src 202.102.76.5<br>
192.168.1.30 via 192.168.1.66 dev eth0 realm 3<br>
192.168.1.0/24 via 192.168.1.66 dev eth0 realm 4<br>
192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.66<br>
172.16.1.0/24 via 192.168.1.66 dev eth0 scope link<br>
127.0.0.0/8 dev lo scope link<br>
default via 202.102.24.216 dev ppp0<br>
default via 192.168.1.254 dev eth0<br>
<br>
　　如上所示，结尾包含有realm的显示行是起作用的路由过滤器。<br>
<br>
6. 维护<br>
　　主要包括对队列、分类、过滤器和路由的增添、修改和删除。<br>
　　增添动作一般依照"队列-&gt;分类-&gt;过滤器-&gt;路由"的顺序进行；修改动作则没有什么要求；删除则依照"路由-&gt;过滤器-&gt;分类-&gt;队列"的顺序进行。<br>
<br>
1）队列的维护<br>
一般对于一台流量控制器来说，出厂时针对每个以太网卡均已配置好一个队列了，通常情况下对队列无需进行增添、修改和删除动作了。<br>
<br>
2）分类的维护<br>
<br>
增添<br>
增添动作通过tc class add命令实现，如前面所示。<br>
<br>
修改<br>
修改动作通过tc class change命令实现，如下所示：<br>
·tc class change dev eth0 parent 1:1 classid 1:2 cbq bandwidth 10Mbit rate 7Mbit maxburst 20 allot 1514 prio 2 avpkt 1000 cell 8 weight 700Kbit split 1:0 bounded<br>
对于bounded命令应慎用，一旦添加后就进行修改，只可通过删除后再添加来实现。<br>
<br>
删除<br>
删除动作只在该分类没有工作前才可进行，一旦通过该分类发送过数据，则无法删除它了。因此，需要通过shell文件方式来修改，通过重新启动来完成删除动作。<br>
<br>
3）过滤器的维护<br>
<br>
增添<br>
增添动作通过tc filter add命令实现，如前面所示。<br>
<br>
修改<br>
修改动作通过tc filter change命令实现，如下所示：<br>
·tc filter change dev eth0 parent 1:0 protocol ip prio 100 route to 10 flowid 1:8<br>
<br>
删除<br>
删除动作通过tc filter del命令实现，如下所示：<br>
·tc filter del dev eth0 parent 1:0 protocol ip prio 100 route to 10<br>
<br>
4）与过滤器一一映射路由的维护<br>
<br>
增添<br>
增添动作通过ip route add命令实现，如前面所示。<br>
<br>
修改<br>
修改动作通过ip route change命令实现，如下所示：<br>
·ip route change 192.168.1.30 dev eth0 via 192.168.1.66 realm 8<br>
<br>
删除<br>
删除动作通过ip route del命令实现，如下所示：<br>
·ip route del 192.168.1.30 dev eth0 via 192.168.1.66 realm 8<br>
·ip route del 192.168.1.0/24 dev eth0 via 192.168.1.66 realm 4<br>
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