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[Veritas-bu] Gigabit Ethernet on Dell 2550; Master Locks up
2001-12-18 15:45:47
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VERITAS NetBackup Users:
I recently configured an environment in Nashville, TN utilizing VERITAS
NetBackup DataCenter 3.4.1 for Windows. We configured four Dell 2550 Servers
(1 master and 3 media servers) so that the ATL P2000 (configured with 4 IBM
Ultrium LTO tape drives) had one tape drive configured to each media server
(direct connect via LVD SCSI). All Master/Media Servers are running Windows
2000, service pack 1. Everything was great until they attempted to
configure Gigabit Ethernet to the master server.
The Dell 2550 has an auto-negotiating 100/1000 Megabit Ethernet port. When
connected to the 100BaseT switch everything works great. When connected to
the new Gigabit bad things happen. They were testing with a Microsoft
Exchange server and a sniffer and determined that the Master Server was
screaming for more data when the Exchange server simply quit talking to it.
At this point the Master Server locked up (quit responding to the keyboard).
I was wondering if you have ever encountered this symptom in your
experience?
I have another client up and running in a pure Gigabit environment
(environment in Nashville has Gigabit on the master, but 100BaseT on the
client(s)).
Additionally, I had an experience with a different environment in Nashville.
We had similar symptoms of the Master locking up. Eventually we re-deployed
the OS on the Master from Widows 2000 to Widows NT and the problem went
away.
Any insight you can give me would be greatly appreciated.
Regards,
Chuck
Chuck Dufresne
Storage Management Consultant
chuckd AT stratech DOT com
DID 919.379.8428
Main 919.379.8000
FAX 919.379.8100
www.stratech.com
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<TITLE>Gigabit Ethernet on Dell 2550; Master Locks up</TITLE>
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<BODY>
<P ALIGN=3DLEFT><FONT COLOR=3D"#000000" SIZE=3D2 FACE=3D"Arial">VERITAS =
NetBackup Users:</FONT></P>
<P ALIGN=3DLEFT><FONT COLOR=3D"#000000" SIZE=3D2 FACE=3D"Arial">I =
recently configured an environment</FONT><FONT COLOR=3D"#000000" =
SIZE=3D2 FACE=3D"Arial"> in Nashville, TN</FONT> <FONT =
COLOR=3D"#000000" SIZE=3D2 FACE=3D"Arial">utilizing</FONT><FONT =
COLOR=3D"#000000" SIZE=3D2 FACE=3D"Arial"> VERITAS NetBackup DataCenter =
3.4.1 for Windows. We configured four Dell 2550 Servers (1 master and 3 =
media servers) so that the ATL P2000 (configured with 4 IBM Ultrium LTO =
tape drives) had one tape drive configured to each media server (direct =
connect via LVD SCSI). All Master/Media Servers are running Windows =
2000, service pack 1. Everything was great until they attempted =
to configure Gigabit Ethernet to the master server. </FONT></P>
<P ALIGN=3DLEFT><FONT COLOR=3D"#000000" SIZE=3D2 FACE=3D"Arial">The =
Dell 2550 has an auto-</FONT><FONT COLOR=3D"#000000" SIZE=3D2 =
FACE=3D"Arial">negotiating</FONT><FONT COLOR=3D"#000000" SIZE=3D2 =
FACE=3D"Arial"> 100/1000 Megabit</FONT> <FONT COLOR=3D"#000000" =
SIZE=3D2 FACE=3D"Arial">E</FONT><FONT COLOR=3D"#000000" SIZE=3D2 =
FACE=3D"Arial">thernet port. When connected to the 100BaseT switch =
everything works great. When connected to the new Gigabit bad things =
happen. They were testing with a Microsoft Exchange server and a =
sniffer and determined that the Master Server was screaming for more =
data when the Exchange server simply quit talking to it. At this point =
the Master Server locked up (quit responding to the keyboard). =
</FONT></P>
<P ALIGN=3DLEFT><FONT COLOR=3D"#000000" SIZE=3D2 FACE=3D"Arial">I was =
wondering if you have ever encountered this symptom in your =
experience?</FONT></P>
<P ALIGN=3DLEFT><FONT COLOR=3D"#000000" SIZE=3D2 FACE=3D"Arial">I have =
another client</FONT><FONT COLOR=3D"#000000" SIZE=3D2 FACE=3D"Arial"> =
up and running in a pure Gigabit environment (</FONT><FONT =
COLOR=3D"#000000" SIZE=3D2 FACE=3D"Arial">environment in =
Nashville</FONT><FONT COLOR=3D"#000000" SIZE=3D2 FACE=3D"Arial"> has =
Gigabit on the master, but 100BaseT on the client(s)). </FONT></P>
<P ALIGN=3DLEFT><FONT COLOR=3D"#000000" SIZE=3D2 =
FACE=3D"Arial">Additionally,</FONT> <FONT COLOR=3D"#000000" SIZE=3D2 =
FACE=3D"Arial">I had an</FONT><FONT COLOR=3D"#000000" SIZE=3D2 =
FACE=3D"Arial"></FONT> <FONT COLOR=3D"#000000" SIZE=3D2 =
FACE=3D"Arial">experience with a different environment</FONT><FONT =
COLOR=3D"#000000" SIZE=3D2 FACE=3D"Arial"> in Nashville. We had similar =
symptoms of the Master locking up. Eventually we re-deployed the OS on =
the Master from Widows 2000 to Widows NT and the problem went away. =
</FONT></P>
<P ALIGN=3DLEFT><FONT COLOR=3D"#000000" SIZE=3D2 FACE=3D"Arial">Any =
insight you can give</FONT> <FONT COLOR=3D"#000000" SIZE=3D2 =
FACE=3D"Arial">me</FONT><FONT COLOR=3D"#000000" SIZE=3D2 =
FACE=3D"Arial"> would be greatly appreciated. </FONT></P>
<BR>
<P ALIGN=3DLEFT><FONT COLOR=3D"#000000" SIZE=3D2 =
FACE=3D"Arial">Regards,</FONT></P>
<BR>
<P ALIGN=3DLEFT><FONT COLOR=3D"#000000" SIZE=3D2 =
FACE=3D"Arial">Chuck</FONT></P>
<BR>
<BR>
<P ALIGN=3DLEFT><FONT COLOR=3D"#000000" SIZE=3D2 =
FACE=3D"Arial"> </FONT></P>
<P ALIGN=3DLEFT><B><FONT COLOR=3D"#008080" SIZE=3D4 =
FACE=3D"Arial">Chuck Dufresne</FONT></B></P>
<P ALIGN=3DLEFT><I><FONT COLOR=3D"#000000" SIZE=3D2 =
FACE=3D"Arial">Storage Management Consultant</FONT></I></P>
<P ALIGN=3DLEFT><FONT COLOR=3D"#008080" SIZE=3D2 =
FACE=3D"Arial">chuckd AT stratech DOT com</FONT></P>
<P ALIGN=3DLEFT><FONT COLOR=3D"#000000" SIZE=3D2 =
FACE=3D"Arial">DID 919.379.8428</FONT></P>
<P ALIGN=3DLEFT><FONT COLOR=3D"#000000" SIZE=3D2 =
FACE=3D"Arial">Main 919.379.8000</FONT></P>
<P ALIGN=3DLEFT><FONT COLOR=3D"#000000" SIZE=3D2 FACE=3D"Arial">FAX =
; 919.379.8100</FONT></P>
<P ALIGN=3DLEFT><FONT COLOR=3D"#000000" SIZE=3D2 =
FACE=3D"Arial">www.stratech.com</FONT></P>
<BR>
<BR>
<BR>
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