David,
I am able to ping with data size 100 and bit pattern
0x0000, but when I change the data size to 1500
with bit pattern 0x0000 I cannot ping the destination.
Is this bcause of carrier problem?
Also I am able to ping with data size of 1500 and bit
pattern of 0xffff.
Thanks for your help.....
--- [EMAIL PROTECTED] wrote:
> The routers either forward the packet or they don't,
> right? They don't care
> if it is a word document or an excel spreadsheet.
> The router deals with
> Layer 3 and could care less about the higher layer
> protocols (unless you
> have configured ACL's to filter such things).
>
> To rule out the carrier as the problem see If you
> are able to ping reliably
> across the WAN with 1500 byte packets. Then change
> the bit pattern (using
> extended ping) to 0x0000 and 0xFFFF that would test
> the all ones and all
> zero's integrity. Once you do all of that and the
> pings get through then
> you can "probably" rule out the carrier.
>
> Just a thought, but you haven't changed the MTU on
> any of the interfaces
> have you? You want to make sure they are the same
> on both sides. Also I
> would recommend running Fair-queuing on the 64k
> links. That will aid in the
> interactive traffic getting through when there is a
> large FTP or SMTP mail
> with an attachment trying to get out. As far as the
> queuing on the 2MB
> side, FIFO is probably your best bet since there
> have been a lot of issues
> with fair queuing on larger bandwidth links (T1 and
> above usually).
>
> Sorry I don't have an exact answer for this, but
> there are a couple of
> suggestions on troubleshooting it. For what it's
> worth, hope it helps.
>
> David
>
> -----Original Message-----
> From: Jack Walker [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, October 04, 2000 10:57 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Help!!!!!!!!!
>
> Could be a carrier issue, try extended ping using
> various date sizes till
> the largest 1500 if you only have ethernet, see what
> happens, and pls let
> use know the result.
> Good Luck
>
> Jack Walker
> Study Cisco <[EMAIL PROTECTED]> wrote in message
>
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > Hi
> >
> > I am facing one strange problem with my WAN. I
> have 5
> > branches connected via leased line ( 2Mb ).
> Previously
> > they were 64 Kb. Now I have added WIC card in all
> > router (Cisco 3640). The connectivity is as
> follows
> >
> > SiteA-----SiteB-----SiteC-----SiteD----SiteE
> > | |
> > | |
> > ----------------------------------------
> > Site A-B = SiteB-C = SiteC-D = 2Mb.
> > SiteD-E = SiteA-E = 64Kb.
> >
> > SiteA to siteE and SiteD to SiteE are connected
> via 64
> > Kb and rest of them are via 2 Mb. The 2Mb between
> Site
> > B-C is new to 2 Mb. I have not use any QoS on my
> > router interfaces. It is set to FIFO queueing. I
> have
> > not appiled any filtering or any application level
> QoS
> > on any of router. I have implemented EIGRP on all
> > router as routing protocol.
> >
> > The kind of problem I am facing are as follows
> > 1. The uucp can not copy between SiteB-C any data
> > between servers using uucp ( on new 2 Mb link ).
> But
> > other all TCP services work without any problem.
> So I
> > shifted from uucp to ESMTP for mail server to
> > communicate between site B-C.
> >
> > 2. And recently I am facing new problem of .doc
> and
> > .xls file are not getting transfered on the same
> link.
> > when I use simple FTP on the same new link between
> > SiteB-C. It can not transfer any data of .doc or
> .xls
> > of even 10kb file size. But at the same time
> parallely
> > I am able to transfer any other data of 20 Mb of
> other
> > file format. But at the same time I am able to
> attach
> > the .doc and .xls file to mails and send them
> across
> > same link.
> >
> > I am totally confused with the kind of problem I
> am
> > facing since it doesnt seems logical.
> >
> > So can any one help me in this ......
> > Thanks in adv.....
> >
> > __________________________________________________
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