(usr-tc) Websites failing on TCHub vs Ascend... Where to start?
We recently have been getting numerous complaints from our users about websites that are dog slow or not coming up at all. Normally I wrote it off as "net traffic" and kept going. Recently we installed an Ascend Max product and an old Portmaster product. It appears that users dialing into the TCHub are having difficulty with specific sites where users dialing into the Ascend and Portmaster products are having no trouble at all with the same sites. 90% of all sites are accessable from the TCHub while specific sites continue to fail (starnews.wilmington.net, www.genforum.com are two examples). Where do I begin to troubleshoot this problem? TCHub versions HARC = 4.2.32 DSP = 2.0.51 Thanks Robb Bryn - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.
On Sun, 5 Mar 2000, Robb Bryn wrote:
We recently have been getting numerous complaints from our users about websites that are dog slow or not coming up at all. Normally I wrote it off as "net traffic" and kept going. Recently we installed an Ascend Max product and an old Portmaster product. It appears that users dialing into the TCHub are having difficulty with specific sites where users dialing into the Ascend and Portmaster products are having no trouble at all with the same sites. 90% of all sites are accessable from the TCHub while specific sites continue to fail (starnews.wilmington.net, www.genforum.com are two examples).
Where do I begin to troubleshoot this problem?
TCHub versions HARC = 4.2.32 DSP = 2.0.51
Sounds like an MTU problem. show remote user username on the tchub, and take a look at what mtu you are assigning users who are problematic.
Thanks Robb Bryn
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----------------------------------------------------- Brian Feeny (BF304) signal@shreve.net 318-222-2638 x 109 http://www.shreve.net/~signal Network Administrator ShreveNet Inc. (ASN 11881) - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.
Thus spake Brian
Sounds like an MTU problem.
show remote user username
on the tchub, and take a look at what mtu you are assigning users who are problematic.
Indeed...my thoughts exactly...also, just to be sure, check your RADIUS users setup as well as that might be where the MTU is being set. -- Jeff McAdams Email: jeffm@iglou.com Head Network Administrator Voice: (502) 966-3848 IgLou Internet Services (800) 436-4456 - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.
On Sun, 5 Mar 2000, Robb Bryn wrote:
We recently have been getting numerous complaints from our users about websites that are dog slow or not coming up at all. Normally I wrote it off as "net traffic" and kept going. Recently we installed an Ascend Max product and an old Portmaster product. It appears that users dialing into the TCHub are having difficulty with specific sites where users dialing into the Ascend and Portmaster products are having no trouble at all with the same sites. 90% of all sites are accessable from the TCHub while specific sites continue to fail (starnews.wilmington.net, www.genforum.com are two examples).
Here's another idea. It could be a MTU discovery problem. If you have either numbered your chassis out of private IP space or are blocking ICMP, that might be what's causing it. This might be another hint (I was hoping they were Solaris, since that would reinforce the MTU theory)... ridge.spiritone.com% telnet www.genforum.com Trying 216.15.177.242... Connected to www.genforum.com. Escape character is '^]'. Red Hat Linux release 5.2 (Apollo) Kernel 2.0.36 on an i686 login: login: ridge.spiritone.com% telnet starnews.wilmington.net Trying 205.218.216.4... Connected to starnews.wilmington.net. Escape character is '^]'. Red Hat Linux release 5.2 (Apollo) WISE release 1.22 (i686 optimized) Kernel 2.2.13 on an i686 login: login: -- Aaron Nabil - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.
participants (4)
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Aaron Nabil -
Brian -
Jeff Mcadams -
Robb Bryn