From: Aaron Morris (aaronmorris@MINDSPRING.COM)
Date: Fri Apr 25 2003 - 18:59:46 EDT
The machine has to "route" traffic based on the static routes defined on
the box. You can view these routes by using "netstat -rn". It has
nothing to do with the number of interfaces. Technically, the "gateway"
for a remote machine on the same subnet is the local machine.
Make sure you do not have the Internet Connection Firewall enabled on
the Win2K box. That would allow the Win2k box to send traffic but not
receive traffic.
Willeat, Todd wrote:
> The traceroute from the Win2K box to the AIX box SHOULD have just one entry.
> But I get the same thing as AIX to Win2K - 30 rows of * * * Request timed
> out.
>
> No static routes have been added. Where you you put them?
>
> -----Original Message-----
> From: John Jolet [mailto:john.jolet@FXFN.COM]
> Sent: Friday, April 25, 2003 10:13 AM
> To: aix-l@Princeton.EDU
> Subject: Re: Strange networking issue
>
>
> well, when you have multiple interfaces in the box, i think routing does
> happen, even if it's local....the traceroute from the win2k box just has one
> entry...the aix box, right? I know it sounds silly, but have you tried
> adding a static route to the win2k box gated via the correct aix interface?
>
> -----Original Message-----
> From: Willeat, Todd [mailto:TWilleat@MHP.SMHS.COM]
> Sent: Thursday, April 24, 2003 11:56 PM
> To: aix-l@Princeton.EDU
> Subject: Re: Strange networking issue
>
>
> There shouldn't be any routing since both boxes are on the same subnet...
> But, if it helps, here's the traceroute info:
>
> trying to get source for mhp-aquaman
> source should be 170.29.112.254
> traceroute to mhp-aquaman (170.29.112.30) from 170.29.112.254
> (170.29.112.254), 30 hops max
> outgoing MTU = 1500
> 1 * * *
> 2 * * *
> 3 * * *
> 4 * * *
> 5 * * *
> 6 * * *
> 7 * * *
> 8 * * *
> 9 * * *
> 10 * * *
> 11 * * *
> 12 * * *
> 13 * * *
> 14 * * *
> 15 * * *
> 16 * * *
> 17 * * *
> 18 * * *
> 19 * * *
> 20 * * *
> 21 * * *
> 22 * * *
> 23 * * *
> 24 * * *
> 25 * * *
> 26 * * *
> 27 * * *
> 28 * * *
> 29 * * *
> 30 * * *
>
> -----Original Message-----
> From: John Jolet [mailto:john.jolet@FXFN.COM]
> Sent: Thursday, April 24, 2003 8:16 PM
> To: aix-l@Princeton.EDU
> Subject: Re: Strange networking issue
>
>
> really, really sounds like a routing issue...what does a traceroute from the
> aix to win2k box look like?
>
> -----Original Message-----
> From: Willeat, Todd [mailto:TWilleat@MHP.SMHS.COM]
> Sent: Thursday, April 24, 2003 5:22 PM
> To: aix-l@Princeton.EDU
> Subject: Strange networking issue
>
>
> Hi all,
>
> I have a strange network connectivity issue between a p640 box (AIX 4.3.3
> ML11) and a Win2K box (SP3). Both boxes are on the same subnet (and same
> switch), but are having problems pinging each other. The Win2K box has no
> problem connecting to other boxes, and people can telnet to the AIX box. The
> Win2K box has 6 GigE connections in an 802.3ad dynamic team. The p640 box
> has a SysKonnect dual-port GigE card running in failover mode (as well as
> the 2 integrated 10/100s - I have one of these on another subnet and the
> Win2K box can ping that just fine...). Looking at the arp tables shows that
> each box knows the other's MAC address. My network admin captured some
> packets between the 2 and this is what we saw:
>
> Pinging from Win2K to AIX - we saw the packet go from Win2K to AIX, but AIX
> did not return any packets.
> Pinging from AIX to Win2K - we saw the packet go from AIX to Win2K and saw
> the response packet from Win2K to AIX, but AIX did not receive it (request
> timed out).
>
> It appears that AIX is dropping the packets from this Win2K box for some
> reason (I have several other p640s with the same config that work fine).
> However, when I rebooted the Win2K box (after it locked up...), I could then
> ping between the boxes. But this only lasted for a day or so, and now it is
> not working again.
>
> Has anyone seen anything like this before?
>
> _______________________________________
> / Todd A. Willeat \
> | UNIX Administrator |
> | Mercy Health Plans |
> | 425 South Woods Mill Road |
> _ | Chesterfield, Missouri 63017-3492 | _
> / )| (314) 214-2329 / (314) 214-8202 (fax) |( \
> / / | twilleat@mhp.mercy.net | \ \
> _( (_ | http://www.mercyhealthplans.com/ | _) )_
> (((\ \> \/->___________<-=-=-=-=->___________<-\/ </ /)))
> (\\\\ \_/ / \ \_/ ////)
> \ / \ /
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>
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-- Aaron W Morris decep PGP Key ID: 259978D1
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