Check your MTU size. I believe the
recommended size for dialup is 576.
From:
usr-tc-bounces+jjperc=petronet.net@mailman.xmission.com
[mailto:usr-tc-bounces+jjperc=petronet.net@mailman.xmission.com] On Behalf Of Kirti S. Bajwa
Sent: Monday, July 25, 2005 6:31
PM
To: usr-tc@mailman.xmission.com
Subject: [USR-TC] RE: Dial-In
Problem!!!!
Hello:
Please help. This problem is going
on for the last 7 weeks without fixing.
TC1000
1-HiPer NMC
2-HiPerARC
10-Hiper DSP
We are a small ISP (400 customers).
We have 2-ISDN-PRI lines for our customers to dial in. Our entire system looks
like this:
/
/ T1 to Internet Backbone
/
CISCO 26XX Router
|
HUB 10/100
|
---------------------------------------------------------------------------------------------------------
|
|
| |
|
|
NMC ARC1
ARC2
Web
Authentication Internal Network
----------- 3Com ------------
Server email
Server
| | | | | | | | | |
| |
Customer Dial-In
Our customers can dial-in, are
authenticated and can access the internal web site (www.tibonline.net) and retrieve their email.
But when they try to connect to any web site (outside our network) on the
external net (such as www.yahoo.com), they
time out with a message saying that “this page can’t be
displayed”.
We have changed the HUBs, RJ45
cables. We have the CISCO Router tested fine. Finally, I replaced the 3COM box
with a backup box and the problem continues. Interestingly, we can access any
Internet web site (www.msn.com, www.yahoo.com, etc.) from our internal network
(over LAN) without problem.
I have called Sprint, who provides
us with ISDN-PRI lines. They claim that the lines are testing OK.
Has anyone faced the similar
problem? If YES, what was the solution?
Kirti