Internal traffic waits for ever...

Hi,

On a custoimer's 2003 server, I've got an app with IIS, SQL Server and other
services. For some reason, every so often it refuses to recognise
'localhost'; it'll take packets from outside but you can't get through from
within the box itself. All the services start to hang until one of them
crashes (usually the app that's waiting for all these things...). Has anyone
seen this sort of disparity between internal and external traffic?

Chris M

Chris,
What do you mean by "it refuses to recognise localhost"? Can you describe
the behaviour you are seeing?
Also, any errors in the Event Log or the application's own log?
Anthony
http://www.airdesk.co.uk


"Chris Mitchell" <(E-Mail Removed)> wrote in message
news:523E1CF2-03CB-4BDD-88CE-(E-Mail Removed)...
> Hi,
>
> On a custoimer's 2003 server, I've got an app with IIS, SQL Server and
> other
> services. For some reason, every so often it refuses to recognise
> 'localhost'; it'll take packets from outside but you can't get through
> from
> within the box itself. All the services start to hang until one of them
> crashes (usually the app that's waiting for all these things...). Has
> anyone
> seen this sort of disparity between internal and external traffic?
>
> Chris M

"Anthony [MVP]" wrote:

> Chris,
> What do you mean by "it refuses to recognise localhost"? Can you describe
> the behaviour you are seeing?
> Also, any errors in the Event Log or the application's own log?
> Anthony
> http://www.airdesk.co.uk
>

It's an oddity... If I run a browser against the IIS on the same machine, it
simply sits there saying "Page cannot be found". Do it from another box, and
it returns OK. Looking at the various processes elsewhere in the thing, for
example the SNMP service is sitting there waiting forever, and so it goes.
There's no errors in the event or app log because there's nothing wrong,
nothing breaks until something times out through not being answered. I can't
honestly see how something like this could occur unless there's a setting for
something in the network layer almost like the file handles of yesteryear....

Chris M

What does it say in the IIS log?
Anthony,
http://www.airdesk.co.uk


"Chris Mitchell" <(E-Mail Removed)> wrote in message
news:73AC496A-DA4F-4AE9-8BF3-(E-Mail Removed)...
>
>
> "Anthony [MVP]" wrote:
>
>> Chris,
>> What do you mean by "it refuses to recognise localhost"? Can you describe
>> the behaviour you are seeing?
>> Also, any errors in the Event Log or the application's own log?
>> Anthony
>> http://www.airdesk.co.uk
>>
>
> It's an oddity... If I run a browser against the IIS on the same machine,
> it
> simply sits there saying "Page cannot be found". Do it from another box,
> and
> it returns OK. Looking at the various processes elsewhere in the thing,
> for
> example the SNMP service is sitting there waiting forever, and so it goes.
> There's no errors in the event or app log because there's nothing wrong,
> nothing breaks until something times out through not being answered. I
> can't
> honestly see how something like this could occur unless there's a setting
> for
> something in the network layer almost like the file handles of
> yesteryear....
>
> Chris M

"Anthony [MVP]" wrote:

> What does it say in the IIS log?
> Anthony,
> http://www.airdesk.co.uk

Helpfully, nothing... It'll do a one page request just fine; a bigger
request (such as the status page)and it just sits there. I replicated this
with an IBM-labelled version of the Apache webserver (not Tomcat). There is a
BEA JRockit in there as well, and that just sits there waiting for the LDAP
server at the same time. There's so many things just sitting and waiting, and
I can't see any causal relationship between the waits. The JRockit/LDAP wait
can happen; if I test with IIS or Apache, they also wait... It's almost like
the file handles issues of yesteryear...

Chris M