Los packets when pinging server on other end

[afasano]

Hi guys, im having troubles with my network.

This is the scenario, two ASAs 5520 connected with MPLS, behing those ASAs a Cisco 3750 switch, and behind those switches a SF300 switch.

The problem is the next one:

Two computer connected to the same VLAN on the same access switch, one of them can access the server on the other end behind the ASA and the core switch, the other computer on the same VLAN and the access switch lossess 7 or 8 packets when pinging the same server.

i cannot figure it out, do any of you know what may be happening?

thanks!

Regards!!

[balaji.bandi]

Not enough inforamtion here to asists better.

we need to more information, if you have high level topology to understand the environement.

also provide, What is VLAN PC connected IP range, What is the Server IP Address ? what VLAN they belong to ?

where is the Gateway or SVI  for these VLAN  configured  ? Other ping do you have application issue also ?

check if  you have any QoS in place to check

[afasano]

the core Switch has all SVI configured, one for each VLAN.

the default gateway for the VLAN is the SVI

the next hop is the ASA, it has a VLAN interface setup the communicate with the core switch

one PC connected to the SF300 access switch on VLAN31 is working perfectly, other PC connected to the same switch and in the same VLAN loosses 7 or 8 packets of 10, both PCs have the same path to reach the destination.

do you need the configs of the cores and ASAs?

regards!!!

[balaji.bandi]

If i understand correctly as below :

SF300 access switch on VLAN31   - working 

VLAN loosses 7 or 8 packets of 10 - not working

Then we need check below :

1. Can you show the tracepath for the both working and not working.

2. check the rules and QoS ?

3. what VLAN Server resides or if outside what is the IP address - local or Pyblic ?

provide core switch config, asa, give the IP address information also.