03-11-2015 11:16 AM - edited 03-05-2019 01:00 AM
Hi guys.
Please se my output below. It is from my router Cisco 2851 with 120 users behind. As you can see I have a lot of bittorrent traffic. I don't wont to block this kind of traffic, I would just like to see it on the last place. Can anybody help me how to clasify and give the lowest priority for bittorrent traffic? I would like to see RTP voip, RTP video, skype, http on first place....
GigabitEthernet0/1.1340
Last clearing of "show ip nbar protocol-discovery" counters 1w2d
Input Output
----- ------
Protocol Packet Count Packet Count
Byte Count Byte Count
5min Bit Rate (bps) 5min Bit Rate (bps)
5min Max Bit Rate (bps) 5min Max Bit Rate (bps)
------------------------ ------------------------ ------------------------
bittorrent 302920897 470540833
289939750051 250885302620
2709000 2073000
10559000 14623000
secure-http 141000481 212446460
22328903881 275590940591
187000 4085000
2479000 11973000
http 102326084 161142496
19112767323 227491316133
272000 8634000
1976000 9516000
skype 200422234 102689111
133722263348 46204189439
2680000 660000
5375000 3895000
edonkey 8900504 1451351
878779009 861789631
4000 0
410000 1745000
dns 28996011 30130934
2506218937 5037708459
3000 25000
1489000 264000
h323 1530324 1460240
692283552 1604664549
0 0
987000 617000
secure-pop3 94691 116611
7324464 141398571
0 0
67000 1070000
secure-imap 205383 231454
25012133 120620219
0 0
72000 500000
skinny 1210 69507
128633 95643340
0 0
3000 553000
rtp 82116 227164
14632471 93123379
0 0
67000 486000
03-11-2015 11:57 AM
What IOS are your running?
03-11-2015 12:07 PM
Hi Joseph,
I running c2800nm-adventerprisek9-mz.124-20.T1.bin
03-11-2015 12:47 PM
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Posting
Ah, first version supporting HQF.
Ok, for egress prioritization, you could use something like:
policy Sample
class real-time
priority percent 33
class HiPriority
bandwidth remaining 81 percent
fair-queue
class LoPriority
bandwidth remaining 1 percent
fair-queue
class class-default
bandwidth remaining 9 percent
fair-queue
Then all you need to do is map your different traffic into a class with the priority it needs. Most traffic will work fairly well falling into the default class. So, you only need to worry about traffic that needs to be treated better or worse. Something like VoIP bearer traffic should be directed to the real-time class. Something like VoIP signalling traffic might be directed to the HiPriority class. Something like bittorrent could be directed to the LoPriority class. NBAR can be used for match, for example:
class-map match-any LoPriority
match protocol bittorrent
03-12-2015 12:18 PM
Hi Joseph,
Thank you for your answer and helpfull explanation. I have similar toughts about how to do this, now I have to put this in configuration and try if this will work.
Best regards
Boris
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