""Priscilla Oppenheimer"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Chuck's Long Road wrote: > > > > I'm putting in some rack time to review certain QoS features. > > Configuration > > is not really a problem. MQC makes this really easy :-> > > > > However, I am attempting to observe results, and I am finding > > that I am > > unable to make bad things happen, such as packet drops. > > > > I am pinging from three different routers on a token ring to 3 > > other routers > > via a 64K frame relay. The router that bridges the token ring > > and frame > > networks has the policy configured. > > You would have to exceed 64 Kbps for drops to occur, wouldn't you? Do you > have any idea how much bandwidth you're using on the Token Ring side? What > does show int show for load? > > I'm thinking you'll need to do more than ping. The problem with Cisco's ping > is that it doesn't let you specify how much time between pings, sometimes > called an interval. The timeout value is for unsucessful pings. But what you > need is a configurable interval between the sending of pings, successful or > not. A real operating system or real ping tool would let you do this. ;-)
CL: I finally was able to get some bad things to happen. token ring domain---- border router ----- frame relay domain I just started pinging from both sides, over an extended period of time. To judget from the result, given the rudimentary configurations, it takes a minute or two for the rate limits to apply. There is an "average" traffic rate. three routers from each domain pinging the other side, packet sizes 1500 bytes, and I lowered the timeout value to 1 second from the default two seconds. By the time I added the sixth router's traffic, everybody started timing out. It took a minute or two for traffic to start going through again after I stopped traffic from a router or two. I'll have to look into the defaults more closely. There has got to be a better show command than the "show policy-map interface etc" for this. Back to the docs. > > Ping in the MS-DOS prompt on Windows doesn't have this either, at least not > the version I'm using. But ping under UNIX does, although it may not let you > set the interval low enough. Some UNIXes have a -f (flood) option that will > let you really whip the pings out. And a ping utility would let you do that > too. For example, I use iNetTools from WildPackets. > > Are you trying to consume bandwidth just by using router tools or could you > use a host also? Then there are many more options, of course. > > Hmm, what are some other ways to consume bandwidth by just configuring > router options. Gazillions of SAPs? Gazillions of AppleTalk networks with > RTMP? Can you FTP or RCP stuff to and from the routers? > > _______________________________ > > Priscilla Oppenheimer > www.troubleshootingnetworks.com > www.priscilla.com > > > > > class-map match-all pingr6 > > match ip precedence 6 > > class-map match-all pingr7 > > match ip precedence 7 > > class-map match-all pingr5 > > match ip precedence 5 > > ! > > policy-map 200filter > > class pingr5 > > police 8000 1500 1500 conform-action transmit > > exceed-action drop > > class pingr6 > > police 8000 1500 1500 conform-action transmit > > exceed-action drop > > class pingr7 > > police 8000 1500 1500 conform-action transmit > > exceed-action drop > > ! > > ! > > interface Serial0 > > bandwidth 64000 > > > > ( clockrate on the frame switch is set to 64K ) > > > > ip address 192.168.50.1 255.255.255.0 > > encapsulation frame-relay > > ip ospf priority 100 > > service-policy output 200filter > > no fair-queue > > frame-relay map ip 192.168.50.2 102 broadcast nocompress > > frame-relay map ip 192.168.50.3 103 broadcast nocompress > > frame-relay map ip 192.168.50.4 104 broadcast nocompress > > ! > > > > I'm using extended ping, and setting the packet size to 1500, > > and the ToS > > bit to match the values in the class-maps. > > > > Replies appear to be slow, but nothing is being dropped, as I > > would expect. > > Even when I throw in traffic from the border router just to > > fill up > > bandwidth. > > > > Anyone got some thoughts on "proof of concept" for policing? > > > > Chuck > > -- > > > > www.chuckslongroad.info > > like my web site? > > take the survey! Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=54147&t=54134 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
