topic Re: procurve 2650 vlan issue and internet issue in Switches, Hubs, and Modems

procurve 2650 vlan issue and internet issue

Jason Jayko_1 — Thu, 11 May 2006 19:58:26 GMT

We have a procurve 2650 with multiple vlan with a route forcing clients to our Microsoft ISA 2004 server. Everything works fine except internet traffic( runs dog slow) all other network traffic(email and apps) work fine. Any suggestions would be greatly welcomed

Re: procurve 2650 vlan issue and internet issue

Matt Hobbs — Thu, 11 May 2006 20:23:39 GMT

If you do a 'show cpu' from the switch, is the cpu usage high? The 2650 supports only 128 host entries in hardware, so it can begin to slow down when routing traffic for many users.

Re: procurve 2650 vlan issue and internet issue

Jason Jayko_1 — Thu, 11 May 2006 20:28:53 GMT

so far there is only to clients connected to 1 vlan for testing purposes. There has not been a high load of traffic.

Re: procurve 2650 vlan issue and internet issue

Matt Hobbs — Thu, 11 May 2006 23:28:06 GMT

Have you checked cabling / duplex settings (Auto recommended)? Are there any errors in the counters going to that port?

If you can capture the 'show tech' from the switch and attach it here (remove any sensitive information), I'll have a quick look through.

Otherwise contact HP support and have the show tech report ready for them.

Re: procurve 2650 vlan issue and internet issue

Jason Jayko_1 — Fri, 12 May 2006 07:05:58 GMT

no errors at all on the port. how do i capture the data out

Re: procurve 2650 vlan issue and internet issue

Mohieddin Kharnoub — Sun, 14 May 2006 00:12:07 GMT

Hi
Is your ISA server connected directly to your 2600 switch? is yes, i think then its a Server issue becasue all other traffic is ok.
And if you connected the ISA server to another switch then i recomend you to check the other switch, then Try to traceroute from client to ISA and see the path.

Re: procurve 2650 vlan issue and internet issue

Preston Gallwas — Mon, 15 May 2006 10:35:04 GMT

Jason,

If you're using SSH or TELNET, I recommend using "PUTTY" to connect. You can turn on a logging feature to capture the "show tech".

To do this in putty, on the left panel under "logging" select the following options

Log printable output only
Log file name (specify a path...to give you an example mine is C:\PuttyLogs\&Y - &M - &D - &T - &H.log)

If the log file already exists, ask
Flush log file frequently
Omit known password fields

You can then go back to the session tab and connect.

If you're using hyperterminal, you can initate the session, then go to "transfer" then capture text. specify a file name and you're good to go. when you're finished with the "show tech" you can go to transfer - capture text - off

Hope this helps.

Re: procurve 2650 vlan issue and internet issue

Jason Jayko_1 — Mon, 15 May 2006 11:04:09 GMT

here is the putty log.

Re: procurve 2650 vlan issue and internet issue

Matt Hobbs — Mon, 15 May 2006 18:35:17 GMT

That is as close to a perfect show tech report that I've ever seen.

This is the ISA Server correct? 192.168.0.104.

Have you tried a client on the same VLAN 1 as the ISA server? Give it an address of 192.168.0.105, plug it into port 50 and test. This will test the general switching capability of the switch instead of it's routing.

If it is still slow, use a cross-over cable between that new client and the ISA Server (if it has a gigabit card you probably don't need a cross-over). If the performance is still slow then you know the issue is with the ISA server or internet connection. If it speeds things up a lot then let us know because I haven't thought of an explanation for that yet!

Re: procurve 2650 vlan issue and internet issue

Les Ligetfalvy — Mon, 15 May 2006 19:11:29 GMT

If you are going to route multiple VLANs to ISA, make sure that no clients exist on the same network segment as the ISA server. There should be a stub network as shown in this picture.
http://www.isaserver.org/img/upl/Image29161094811945968.gif
For the full details read the article:
http://www.isaserver.org/articles/2004netinnet.html

This however should not contribute to slowness. Slowness is most often a misconfiguration of the ISA server or DNS.

Run a netmon trace of the traffic on the internal NIC of the ISA to see what is really going on.

Re: procurve 2650 vlan issue and internet issue

Jason Jayko_1 — Tue, 16 May 2006 06:43:45 GMT

ISA server is not on one of the VLANS. Our regular network is 192.168.x(0-3).x with a 252 mask. We bought the procurve so we could have our other buildings on vlans for monitoring and security purposes.we are in the process of redisigning our network and desided to go with 10.10 because I don't like using 192. I will try suggestions this morning thank you.

Re: procurve 2650 vlan issue and internet issue

Jason Jayko_1 — Tue, 16 May 2006 06:47:19 GMT

Update..all clients right now are on 192.168.2 and 192.168.3 for dhcp. static devices including ISA are on 192.168.0 and 192.168.1 ...DHCP server is on .0 and router to internet is on .1

Re: procurve 2650 vlan issue and internet issue

Jason Jayko_1 — Tue, 23 May 2006 12:07:46 GMT

ok heres the latest, found a hub in between some switches and removed it. was noticing alot of collisions. come in monday morning and could browse fine. come in tuesday and could browse but found that i have problems getting to some links off of main pages. I can hit the same links on clients that are not going throuhh the vlan. Seems like dns issue going through the procurve. any thoughts