Network board 10/100 full duplex

Question

I have an issue with my system (solaris 8 sparc):
If I download a local file from a distant machine the file is going at about 100Mb. If I try to upload that same file then it is going at 10Mb.
I checked the cables etc but could not find anything.
ndd reports correct figures (100Mb and full duplex)
# ndd -get /dev/hme lp_autoneg_cap
1
# ndd -get /dev/hme lp_100fdx_cap
1
# ndd -get /dev/hme lp_100hdx_cap
1
# ndd -get /dev/hme lp_100T4_cap
0
# ndd -get /dev/hme lp_10fdx_cap
1
# ndd -get /dev/hme lp_10hdx_cap
1
Where should I look now?

Answer 1

Thank you for your help
With those parameters set, my bandwith is just worse so I came back to the previous configuration.
I tried hmeconfig (found on the web, a small perl script to display everything) and it showed:
hme0: using RJ-45 at 100 Mbps full-duplex
* RJ-45 Hardware supports: auto-neg, 100-full, 100-half, 10-full, 10-half
* Auto-negotiation is: ON
* Enabled modes: 100-full, 100-half, 10-full, 10-half
* Link Partner supports: auto-neg, 100-full, 100-half, 10-full, 10-half
with default values (nothing in /etc/system) and:
hme0: using RJ-45 at 100 Mbps full-duplex
* RJ-45 Hardware supports: auto-neg, 100-full, 100-half, 10-full, 10-half
* Auto-negotiation is: OFF
* Enabled modes: 100-full
* Link Partner supports: UNKNOWN - interface not in auto-negotiation mode
with the following in /etc/system:
set hme:hme_adv_autoneg_cap=0
set hme:hme_adv_100T4_cap=0
set hme:hme_adv_100fdx_cap=1
set hme:hme_adv_100hdx_cap=0
set hme:hme_adv_10fdx_cap=0
set hme:hme_adv_10hdx_cap=0
This sounds normal except that the second one is just slower for ftp exchanges.
I cannot understand this.