It needs to be the physical interface. e.g.
$ lsattr -El ent0
reports the settings:
michael@x054:[/home/michael]lsattr -El ent0
alt_addr 0x000000000000 Alternate Ethernet Address True
busintr 166 Bus interrupt level False
busmem 0xc8030000 Bus memory address False
chksum_offload yes Enable RX Checksum Offload True
intr_priority 3 Interrupt priority False
ipsec_offload no IPsec Offload True
large_send no Enable TCP Large Send Offload True
media_speed Auto_Negotiation Media Speed True
poll_link no Enable Link Polling True
poll_link_timer 500 Time interval for Link Polling True
rom_mem 0xc8000000 ROM memory address False
rx_hog 1000 RX Descriptors per RX Interrupt True
rxbuf_pool_sz 1024 Receive Buffer Pool Size True
rxdesc_que_sz 512 RX Descriptor Queue Size True
slih_hog 10 Interrupt Events per Interrupt True
tx_preload 1520 TX Preload Value True
tx_que_sz 8192 Software TX Queue Size True
txdesc_que_sz 512 TX Descriptor Queue Size True
use_alt_addr no Enable Alternate Ethernet Address True
and
$ entstat -d ent0
reports the active (kernel) statistics:
ETHERNET STATISTICS (ent0) :
Device Type: 10/100 Mbps Ethernet PCI Adapter II (1410ff01)
....
General Statistics:
-------------------
No mbuf Errors: 0
Adapter Reset Count: 0
Adapter Data Rate: 200
Driver Flags: Up Broadcast Running
Simplex AlternateAddress 64BitSupport
ChecksumOffload PrivateSegment DataRateSet
10/100 Mbps Ethernet PCI Adapter II (1410ff01) Specific Statistics:
--------------------------------------------------------------------
Link Status : up
Media Speed Selected: Auto negotiation <<<<<<<< requested speed
Media Speed Running: 100 Mbps Full Duplex <<<<<<<< real speed
Receive Pool Buffer Size: 1024
No Receive Pool Buffer Errors: 0
Receive Buffer Too Small Errors: 0
Entries to transmit timeout routine: 0
Transmit IPsec packets: 0
Transmit IPsec packets dropped: 0
Receive IPsec packets: 0
Receive IPsec packets dropped: 0
Inbound IPsec SA offload count: 0
Transmit Large Send packets: 0
Transmit Large Send packets dropped: 0
Packets with Transmit collisions:
1 collisions: 0 6 collisions: 0 11 collisions: 0
2 collisions: 0 7 collisions: 0 12 collisions: 0
3 collisions: 0 8 collisions: 0 13 collisions: 0
4 collisions: 0 9 collisions: 0 14 collisions: 0
5 collisions: 0 10 collisions: 0 15 collisions: 0
