Hi all, I am new to traffic management and I am having some difficulty working out how to differentiate between my ADSL link and LAN. Background: I recently purchased an "Audiotron", which is a networked device that allows me to play MP3's over my LAN and also allows me to listen to Internet Radio, through my ADSL link (512Kb/s) and then over the LAN. I discovered, however, that when I am doing large downloads, the Internet Radio on the Audiotron suffers (no bandwidth), so I have started looking into traffic shaping. Seeing as I am doing this, I decided that I would also like to give priority to web, news and mail, over any other service, so that large FTP downloads would not affect web browsing speed. My LAN consists of a Linux box with a USB ADSL modem (ppp) and a 100Mb/s network card (eth0). The other machines on my network are all 100Mb/s To sum it up simply: Top priority is Audiotron, which should never take up ALL of the bandwidth (it should never need to), but I would like it to have 256 Kb/s if needed. Next up is web, news and mail, which should take priority over everything else, so I reckon 248Kb/s, leaving 8Kb/s for the rest (which will borrow from the others alot :) I have read the documentation and I think that the rules included at the bottom of this email should work. However, I am not sure whether this would also restrict the bandwidth between machines, which I would like to remain at 100Mb/s. I would appreciate opinions from more experienced people as to how I can manage this. Also, if there are any flaws (read: stupid mistakes) in my rules, I would appreciate comments! Cheers, Ben Rules: # Add HTB as the queue discipline on eth0. tc qdisc add dev eth0 root handle 1: htb default 20 # Add a root class rated at 512kbit (the speed of my adsl downloads) tc class add dev eth0 parent 1: classid 1:1 htb rate 512kbit burst 2k # Add a class with a guaranteed rate of 256kbit and ceiling of 512kbit for the Audiotron tc class add dev eth0 parent 1:1 classid 1:10 htb rate 256kbit ceil 512kbit burst 2k # Add a class for all web, news and mail traffic, rated at 248kbit with 512kbit ceiling tc class add dev eth0 parent 1:1 classid 1:15 htb rate 248kbit ceil 512kbit burst 2k # Add default class for all other traffic, rated at 8kbit with 512kbit ceiling tc class add dev eth0 parent 1:1 classid 1:20 htb rate 8kbit ceil 512kbit burst 2k # OK, we have our classes, now add some filters. # First the Audiotron tc filter add dev eth0 protocol ip parent 1: prio 1 u32 match ip dst 192.168.0.9/32 flowid 1:10 # Next for Web, News and Mail # http/https tc filter add dev eth0 protocol ip parent 1: prio 2 u32 match ip dport 80 0xffff flowid 1:15 tc filter add dev eth0 protocol ip parent 1: prio 2 u32 match ip dport 443 0xffff flowid 1:15 # pop3/smtp tc filter add dev eth0 protocol ip parent 1: prio 2 u32 match ip dport 25 0xffff flowid 1:15 tc filter add dev eth0 protocol ip parent 1: prio 2 u32 match ip dport 110 0xffff flowid 1:15 # news/home news tc filter add dev eth0 protocol ip parent 1: prio 2 u32 match ip dport 119 0xffff flowid 1:15 # Everything else comes under the default. tc filter add dev eth0 protocol ip parent 1: prio 3 flowid 1:20
