[top@jerry ~]# /sbin/ethtool -S eth1
NIC statistics:
rx_packets: 79238424
tx_packets: 16349934
rx_bytes: 7688373239
tx_bytes: 4934606241
rx_broadcast: 63138202
tx_broadcast: 79768
rx_multicast: 369287
tx_multicast: 216802
rx_errors: 0
tx_errors: 0
tx_dropped: 0
multicast: 369287
collisions: 0
rx_length_errors: 0
rx_over_errors: 0
rx_crc_errors: 42
rx_frame_errors: 0
rx_no_buffer_count: 0
rx_missed_errors: 0
tx_aborted_errors: 0
tx_carrier_errors: 0
tx_fifo_errors: 0
tx_heartbeat_errors: 0
tx_window_errors: 0
tx_abort_late_coll: 0
tx_deferred_ok: 0
tx_single_coll_ok: 0
tx_multi_coll_ok: 0
tx_timeout_count: 0
tx_restart_queue: 0
rx_long_length_errors: 0
rx_short_length_errors: 0
rx_align_errors: 0
tx_tcp_seg_good: 0
tx_tcp_seg_failed: 0
rx_flow_control_xon: 0
rx_flow_control_xoff: 0
tx_flow_control_xon: 0
tx_flow_control_xoff: 0
rx_long_byte_count: 7688373239
rx_csum_offload_good: 14493513
rx_csum_offload_errors: 692
rx_header_split: 0
alloc_rx_buff_failed: 0
tx_smbus: 0
rx_smbus: 0
dropped_smbus: 0

Sorry, but what are we supposed to be looking for? ....What problem are you having (if any) ?

this is ethtool report of one of our server in datacenter

what is happening is as follows

1. many times we loose connection from our office to our server. while office internet is working fine.

2. datacenter people tell that there was no downtime on server connectivity.

3 datacenter people told me to check errors on your eth card. so i got this result (i am new to checking errors on eth cards)

so i posted this output here.

let me know if i am clear else i will re-word and write again.

thanks & regards,
saurabh

You've got 42 CRC errors.

Check your hardware.

Quoted from here.

this is the tracepath from our office when there is no link to our server

1: saurabh-desktop.local (192.168.1.6) 0.130ms pmtu 1500
1: 192.168.1.1 (192.168.1.1) 1.051ms asymm 2
1: 192.168.1.1 (192.168.1.1) 0.925ms asymm 2
2: (IP1) 75.008ms asymm 3
3: (IP2) 39.829ms
4: (IP3) 41.390ms
5: (IP4) 68.120ms asymm 9
6: no reply
7: no reply
8: no reply
9: no reply
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
16: (IP5) 62.422ms reached


can any one explain me who is giving problem.

Thanks for listening to me

Regards,
Saurabh

Please ignore if this is not required.

One more tracepath when it was unavailable from our office

saurabh@saurabh-desktop:~$ tracepath on2.biz
1: saurabh-desktop.local (192.168.1.6) 0.123ms pmtu 1500
1: 192.168.1.1 (192.168.1.1) 1.533ms asymm 2
1: 192.168.1.1 (192.168.1.1) 0.928ms asymm 2
2: (IP1) 42.237ms asymm 3
3: (IP2) 41.433ms
4: (IP3) 42.728ms
5: (IP4) 67.868ms asymm 9
6: no reply
7: no reply
8: no reply
9: no reply
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
16: no reply
17: no reply
18: no reply
19: no reply
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21: no reply
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25: no reply
26: no reply
27: no reply
28: no reply
29: no reply
30: no reply
31: no reply
Too many hops: pmtu 1500
Resume: pmtu 1500


didnt reached IP5 which is our server

Regards,
Saurabh