Re: Show commands

On Jun 20, 6:32 pm, James <j...@xxxxxxx> wrote:
Hi all,

I have a problem at work that is getting a little bit personal now. We
have an application that spans our local network (the web part) and the
database where the usernames come from (over a VPN, 100Mb).

This application fails every morning with an unspecified error and we
are told without a doubt it's a network issue. Me being the network
engineer have exhausted every possibility going looking into this.

I have been thinking, is the 4506 getting over-loaded, or are the
un-contended blades using up too much of their backplane? Is there a
show command that will tell me how much bandwidth is being used for the
blade involved? I've been looking for this fault now for ages and am now
lost.

I have Cisco Works LMS 2.6 if that helps, but I'm not a complete expert
on the fault-finding side of it.

Does anyone have any ideas?

Kind regards

James M

What is failing? Logon? Database replication? Transfer? Queries or
transactions? In my years, I have seen a handful of switch problems,
but mostly these are related to bad modules, bad ports, bad ASICs,
etc. Generally speaking, your switch will not be getting overloaded
unless you are running some hardcore stuff like multiple gig ether-
channel database replication, and even then, multiple sessions. Not
to say that folks can't nail a switch with poor configuration
(spanning vlans or trunks, etc).

Where does the VPN go? What kind of bandwidth is it? 100 meg tells
me the fast ethernet connection to the VPN, but does not tell me if
that is LAN or WAN and where the other side of the VPN is. If this
VPN is over a internet T1, and the transaction that fails is a gig
file transfer to kick off the day, then you may be hitting a
bottleneck, but generally speaking, nothing should 'fail'. I guess if
someone is nailing the pipe and this is a sensitive application, it
could be timing out, but that is what needs to be analyzed.

Is the transaction that fails run at other times of the day? Does it
complete successfully? How do you get beyond the error, wait and
retry? Once we see some answers, we can hopefully go to the next
steps...but I would very much doubt that you have a switch backplane
or hardware problem here.

.

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