01-06-2008 05:12 PM - edited 03-05-2019 08:18 PM
Hi,
I am using Cat 4510 core switch.
When I am connecting one of my server to Switch portand run Sh int g7/15;ouput shows 10 MB and if i connect that server cable to g7/18, sh int g7/18 output shows 1000 MB.
I tried to apply 1000m forcefully,still it taking 10 m.
Can anyone let me understand ,what could be the possible reason for this?
Thx
01-06-2008 07:52 PM
Are you connecting from the same server and using the same cable on both switchports ?
Please post the output from typing
sh run int g7/15
and
sh run int g7/18
as well as
show int g7/15 and show int g7/18 while the server is connected.
01-11-2008 06:01 AM
Hi,
Thx for reply to all..
I am connectiving from same server and using the same cable.I am clearing here that g7/15 and 7/18 are on same switch.
sh run int g7/15
Building configuration...
Current configuration : 113 bytes
!
interface GigabitEthernet7/15
description MB
switchport access vlan 205
duplex full
spanning-tree portfast
end
sh run int g7/18
Building configuration...
Current configuration : 127 bytes
!
interface GigabitEthernet7/18
description IS
switchport access vlan 205
duplex full
spanning-tree portfast
end
01-06-2008 09:26 PM
try to force speed/duplex in both sides : server and switch
01-11-2008 06:02 AM
I have tried all the options.
01-06-2008 10:08 PM
if you have left your switchport settings as auto for duplex & speed, then you need to chk the server NIC's configuration.
By hardcoding the interface with desired settings, you should see what you configured.
Posting configs may be helpful.
01-11-2008 06:03 AM
I did the same exercise.
01-11-2008 07:07 PM
I bet the cable is bad.
01-11-2008 07:55 PM
Hi,
What server? Unix/Windows?
Take note that though Cisco allowed us to force speed/duplex of GE interface (1000Mbps). Some server can't force the duplex of 1000Mbps to full-duplex.
If you think your server will not use up more t han 100Mbps bandwidth. It will be better to hardcode both server and switch too 100Mbps/Full-duplex than 1000Mbps/Auto.
Notably HP Unix servers. Some combination of NIC Vendor and Microsoft Windows have no option for 1000Mbps/Full-duplex.
Now, if you really want 1000Mbps. Make sure the ports (Switch and Server) are working fine and also the cable is in qood condition and for UTP it should be minimum Cat 5e. Also use traditional cable selection (i.e. use straight through cable instead of using Auto-MDIX). Then configure both ports (Switch and Server) to Auto/Auto.
This always works for me.
For additional info. Packeteer products with GE ports cannot force 1000Mbps/Full-duplex (only Auto/Auto if you really want 1000Mbps).
Regards,
Dandy
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