Re: Network connectivity problem on Netview Server

["Ray" <westphal@accessus.net>]

This is a multi-part message in MIME format.

Network connectivity problem on Netview ServerHi Santosh!

I think we need more information. 1st question - what type of server? However, 
here is a few things to check:

    Since the loss of connectivity is to devices on the same network 
(correct?), check your network adapter(s) on the NetView server.

    1) Is it 100MB Full Duplex? 
    2) Does it match the switch settings? I avoid using auto negotiate on the 
switch or server adapter.
    3) How many adapters on your server? How many objects on the network you 
are having problems with?
    4) Have you checked receive buffer stats on the NetView servers ethernet 
adapter? i.e entstat -d en0. 
        Check the No Receive Buffer counter. entstat -r en0 will reset it. It 
is incrementing at all?
    5) Check your network masks on the objects.
    6) Since these objects are on the same network - you should not be losing 
routes correct?
        If you want routes to remain, check the "no" command route_expire 
option.
    7) Check your switch statistics for errors on the port.
    8) Check your errpt command. Any ethernet adapter errors? Any ethernet 
adapter recovery events?
    9) Have you checked your cabling?
    


HTH.
Ray Westphal.
    
    
  ----- Original Message ----- 
  From: z_esm_karekars 
  To: 'nv-l@tkg.com' 
  Sent: Monday, March 19, 2001 1:01 AM
  Subject: [NV-L] Network connectivity problem on Netview Server


  Hi, 

  I had AIX Ver. 4.3 with FrameWork 3.7 & NetView Ver. 6.0. 

  Facing problem of Network connetcivity loss to some random nodes on same N/W, 
this gets restored some times after reboot of AIX server once, and sometimes it 
needs reboot more than once. Is it bug ? I had applied the patch for Framework 
available on NetView 6.0 CD.

  I had reloaded AIX, Framework, NetView on the same Server to isolate the 
problem may be of earlier configuration. 

  Please reply. 

  Regards, 
  Santosh Karekar

Hi Santosh!

 

I think we need more information. 1st question - what type of server? However, here is a few things to check:

 

    Since the loss of connectivity is to devices on the same network (correct?), check your network adapter(s) on the NetView server.

 

    1) Is it 100MB Full Duplex?

    2) Does it match the switch settings? I avoid using auto negotiate on the switch or server adapter.

    3) How many adapters on your server? How many objects on the network you are having problems with?

    4) Have you checked receive buffer stats on the NetView servers ethernet adapter? i.e entstat -d en0.

        Check the No Receive Buffer counter. entstat -r en0 will reset it. It is incrementing at all?

    5) Check your network masks on the objects.

    6) Since these objects are on the same network - you should not be losing routes correct?

        If you want routes to remain, check the "no" command route_expire option.

    7) Check your switch statistics for errors on the port.

    8) Check your errpt command. Any ethernet adapter errors? Any ethernet adapter recovery events?

    9) Have you checked your cabling?

   

 

 

HTH.

Ray Westphal.

   

   

----- Original Message -----

From: z_esm_karekars

To: 'nv-l@tkg.com'

Sent: Monday, March 19, 2001 1:01 AM

Subject: [NV-L] Network connectivity problem on Netview Server

Hi,

I had AIX Ver. 4.3 with FrameWork 3.7 & NetView Ver. 6.0.

Facing problem of Network connetcivity loss to some random nodes on same N/W, this gets restored some times after reboot of AIX server once, and sometimes it needs reboot more than once. Is it bug ? I had applied the patch for Framework available on NetView 6.0 CD.

I had reloaded AIX, Framework, NetView on the same Server to isolate the problem may be of earlier configuration.

Please reply.

Regards,
Santosh Karekar