Help with ftp transfer speeds among Solaris machines

[tony4704]

This problem is driving me nuts. I have two machines both on the same subnet and both FTPing to another machine that is on the same subnet. They have the same NIC cards and are connected in the same manor. Machine A get 670kbytes/sec on an FTP from machine C while machine B gets almost 10000 kbytes on an FTP from machine C.

Machine A
> ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index
1
inet 127.0.0.1 netmask ff000000
bge0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
inet 172.23.108.121 netmask ffffff00 broadcast 172.23.108.255
ether 0:3:ba:18:be:ef
bge1: flags=1000803<UP,BROADCAST,MULTICAST,IPv4> mtu 1500 index 3
inet 12.0.1.121 netmask ffffff00 broadcast 12.0.1.255
ether 0:3:ba:18:be:f0

Interface Link Speed Duplex Link Partner Autoneg LP Setting
_________ ____ _____ ______ ____________________ __________
bge0 UP 100 FULL ENABLED 100_FULL
bge1 DOWN N/A N/A N/A N/A


Machine B
# ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index
1
inet 127.0.0.1 netmask ff000000
bge0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
inet 172.23.108.1 netmask ffffff00 broadcast 172.23.108.255
ether 0:14:4f:65:78:72

Interface Link Speed Duplex Link Partner Autoneg LP Setting
_________ ____ _____ ______ ____________________ __________
bge0 UP 100 FULL ENABLED 100_FULL

Does anyone have any suggestions?

 

[ScottMac]

Are these Sparcs or X86?

Are they the same generation processor / proc speed / ram etc?

 

[spidey07]

It looks like you have ethernet autonegotation turned on. That is good, because my first instinct would be a duplex mismatch on machine A's switchport. Make sure the switch port it is attached to is also set to autonegotiate and that the NIC and switchport auto to 100/full.

Apart from that, cabling would be the next place to look.

 

[Cooky]

Your machine A has an additional interface on bge1: 12.0.1.121.
Which one is the default gateway?

 

[jlfirehawk]

We had this issue once and after putting multiple sniffers out there and troubleshooting we found out if you do not have reverse DNS setup for each machine it causes huge lags on solaris machines using ftp.