Re: Errors over token-ring.

[Philipp Rusch <Philipp.Rusch@xxxxxxxxxxxx>]

Hi Chuck,
sounds like a routing problem, most commonly with default gateway definition
in windows clients.
BTW: you shouldn't  do bridging between TR and ETH segments and if
using the 270 you are obviously routing between the two segments.
Some further hints:
- Look out for any loops and have a look a the spanning tree algorhythms,
especially cisco switches do have this enabled by default. This is okay so far
as your network layout is correct.
- Sometimes you need to disable source route bridging in AS/400 TCP to
keep the windows domains clean.
- Timeout values should not be the problem as you are not using WAN lines
and you stay inside the LAN only.

HTH, regards from germany, Philipp Rusch

Chuck Morehead schrieb:

> We provide AS/400 services to a large company.  This is the only area that
> we provide service in, they take care of other areas (e.g. their network)
> in-house, so I do not know how they have their network configured.  On
> November 3 we replaced their old B70 running token-ring with a new 270 using
> an Ethernet card and running OS/400 V4R5.  Everything seemed fine.  However,
> the next Monday at about 3:00 p.m. everyone in one area started having
> horrible response and then dropping.  This cleared up after about 1.5 hours.
> Again, things seem to run fine, until Thursday & Friday, November 15 & 16,
> when they started to have the same intermittent problems.  Here is the
> interesting part: the PC's having problems with communications are using
> token-ring.  A PC on an Ethernet network does not experience the problems.
> When we reset TCP/IP it seems to help a little bit sometimes and doesn't
> have any affect other times.  This makes me think that the problem is with
> the bridging between the token-ring and Ethernet networks.  But the network
> guys can't find anything wrong with the network (althought they do see
> errors) and are pointing at the AS/400.
>
> Does anyone have any ideas on this?
>
> Chuck Morehead
> Nokuse Consulting - Providing high value Information Technology Services.
> Native Bear Software - Providing affordable Industry Specific Software.
> http://www.nokuse.com
>
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