Network issue : FCS errors

Kociszev — Mon, 18 Aug 2014 10:02:25 GMT

Hello all !

I encounter an issue on one of my TRU64 servers.

There is a slow data transfer rate between the tu0 interface with the rest of my network.

# netstat -is

tu0 Ethernet counters at Mon Aug 18 12:36:29 2014

          597288 seconds since last zeroed
      3247692782 bytes received
      1247440141 bytes sent
        47230625 data blocks received
         1276867 data blocks sent
      3190099068 multicast bytes received
        46494595 multicast blocks received
         2323078 multicast bytes sent
           19830 multicast blocks sent
               0 blocks sent, initially deferred
               0 blocks sent, single collision
               0 blocks sent, multiple collisions
              15 send failures, reasons include:
            1400 receive failures, reasons include:
                      1400 frame check sequence errors

# hwmgr -get attr -cat network | more
36:
name = tu0
category = network
sub_category = Ethernet
model = 21143
hardware_rev = 4.1
firmware_rev =

MTU_size = 1500
media_speed = 100
media_selection = Set by SRM Console
media_type = Unshielded Twisted Pair (UTP)
loopback_mode = 0
promiscuous_mode = 0
full_duplex = 1

interface_number = 1
link =
registration_time = Mon Aug 11 14:40:39 2014
user_name = (null) (settable)
location = (null) (settable)
software_module = (null)
state = available
state_previous = unknown
state_change_time = none
event_count = 0
last_event_time = none
access_state = online
access_state_change_time = none
capabilities = 0
indicted = 0
indicted_probability = (null)
indicted_urgency = (null)
disabled = 0

These actions have been done :

- Check the link with the directly connected swith : OK

- Swap the pport on the swich : done, same problem

- Change the MTU value from 1500 to 1458

- Change the network card : done, same problem

- Change the cable between the server and the switch : done, same problem.

Have you any other suggestions about the cause of this issue ?

Re: Network issue : FCS errors

Steven Schweda — Mon, 18 Aug 2014 18:34:43 GMT

topic Re: Network issue : FCS errors in Operating System - Tru64 Unix

Network issue : FCS errors

Re: Network issue : FCS errors