Thanks Leonard,
I try delete arp cache, but it isn't help.
Emil
-----Original Message-----
From: Leonard, Roger [mailto:rleonard_at_cvty.com]
Sent: 15 February 1999 14:16
To: 'Emil L. Dragic'
Subject: RE: Network problem
try flushing the arp cache on affected machines (man arp)
-----Original Message-----
From: Emil L. Dragic [mailto:emil_at_mobtel.co.yu]
Sent: Monday, February 15, 1999 8:07 AM
To: alpha-osf-managers_at_ornl.gov
Subject: Network problem
Importance: High
Hi Tru64 admins!
I have very strange problem with my network, and I need help.
Here is the description:
I have few server machines: AS4100, AS2000 and Sun Ultra10, few hubs
(10BaseT) and one switch (10/100BaseT).
AS4100 is connected to the switch in FullDuplex mode, AS2000 is connected to
the 10BaseT hub which is connected to the switch via uplink port, and Sun is
connected to the switch in 100BaseT mode.
Everything was OK and work fine until Friday. Then, suddenly some connection
from PC's (workstations) was disconnected from AS2000. I try ping from
AS4100 to AS2000, but they can not see each other. At the same time, I can
see both system from my PC.
I was think, that problem is in bad network cable or bad network adapter on
AS2000, and I replace both.
Network cable is god one, and NIC is DE435 (also god one). But the problem
appears again. From AS2000 I can ping Sun (seems OK), but I can't ping
AS4100. I can ping Sun from AS4100 (works fine) and I can ping AS2000 and
AS4100 from my PC, at the same time.
When I connect AS2000 to the network, the response time from AS4100
significantly increases - we can not work normally on AS4100. Therefore, I
disconnect AS2000 from network.
Configurations:
AS4100/DU4.0d/DE500
AS2000/DU3.2f/DE435
The problem isn't on IP level (all systems have same C-class and same
subnet). Problem appears suddenly, without any changes in configurations.
Question:
Does someone know why AS2000 can see all computers on network except
AS41000?
The NICs is OK, cables is OK, ports on the hubs and switches are OK (we
change everything we can),...,everything seems OK, but it still doesn't
work.
--------------------------------------------
Emil L. Dragic
System Engineer
Mobtel, Yugoslavia
+381 63 230 657 emil_at_mobtel.co.yu
---------------------------------------------
Received on Mon Feb 15 1999 - 13:41:52 NZDT