| Author |
Router speed question
|
|
| ls431o28 2002-01-04, 12:17 am |
| I recently purchased a 2524 and 2511 for my home lab. everything seems to work fine except im getting really slow connections. this is the setup
I have Cable coming into a linksys router and ive set 192.168.1.100 on the DMZ and set it for Rip v.1
the 2511 is the next in order which has eth0 192.168.1.1xx it than goes out the Ser0 set as the DCE clock rate is 64000 with an ip of 192.168.3.5
the 2524 is next ser0 has an ip of 192.168.3.1 and eth0 ip of 192.168.4.1
from there it goes to a 1924 switch and i set all the ports to full duplex
Ive set RIP on all the Routers and set the Bandwidth to 64 after some reading I realized I have a v.35 cable on the Serials so I set the bandwidth to I believe 48 what ever the max is for v.35 and set the eht0s to the same. when i try a download test im only getting about 9Kbps. if i pull the routers out of the loop and go straight to the switch i get normal bandwidth about 150Kbps downloads. I just cant figure out what is causing me to lose so much bandwidth. Ive checked all the interfaces for drops and they are showing 0 so i cant figure out where the problem is at. ie checked all the cables to make sure everything is attached fine and it is. anyone have an idea what im overlooking here. ive been running through this for two days and am ready to pull my hair out!
thanks | |
| catfisch 2002-01-04, 1:51 am |
| How much RAM do your routers have.. i use 4000s for my lab and they are alot more forgiving as far as horsepower goes.. but i know thats not an option for most people.
opinions:
1)If you just want to improve BW.. i'd setup all static routes and issue a # no router rip and just get rid of RIP all together.. this will free up BW and CPU power on your 2500's.
2)Or you could swich over to IGRP because its less "chatty" and you can take advantage of it's composit metrics.I would also set both e0 ports to passive so they don't blast out routing updates to devices that don't need them and kill bandwidth.. then debug the hell out of em' just a few thoughts.. let me know how it goes man..
-Catfisch | |
| Yankee 2002-01-04, 4:29 am |
| Not sure what you mean by the V.35 max of 48, but your routing protocol is not your primary problem.
My guess is that it is your clockrate setting that is slowing you. You aren't paying a carrier for that bandwidth so up the clockrate on your serial to increase your speed.
Yankee | |
| firechicken 2002-01-04, 10:50 am |
| catfisch typed out a great post, with some good real world stuff. Since this is a home lab though, a 2500 will definitely be able to handle your traffic. Cisco says a 2500 is a ROBO router as it's best...of course, that depends on type of flows, but I believe them. We used a 2500 for our campus, and it did fine until the network outgrew it at around 500 workstation (many of which were bandwidth greedy students downloading every kind of nudey flicks and mp3s you can imagine).
I'd be willing to bet you're getting an extraordinary amount of errors on your connection between E0 of your router and your switch. I say this because you say you set your switch ports to full duplex, but the ethernet port on your router is only capable of half-duplex. If there is a duplex mismatch, it will still work, but with a high amount of errors. To add, if you have a speed mismatch, then it shouldn't work at all.
I agree with Yankee, type in clockrate ? or clock rate ? (depending on your IOS) and look at the number at the bottom of the list. Use that number! 
So...set your switch port to half-duplex, and crank up that clockrate!
Hope this helps. | |
| ls431o28 2002-01-04, 7:21 pm |
| Hey yall just thought I would post my status on the routers. and it was the Clock rate I set it up to 4000000 and its zippin back where I want it. I just never thought that bandwidth could be controlled by clock rate. I figured clock rate was a way for the 2 interfaces to know that each was still there.
welp I learned sumthin today. thanks for the info. | |
| Yankee 2002-01-07, 4:01 am |
|
Yankee |
|
|
|