DNS/ping/traceroute problems on mutiple UNIX hosts

e run Workstation 9.0.1 with a set of corresponding to a 'standard' UNIX clients build the image on our development books and two remote side desktop workstations. The main differences other than the material are of course laptops work over Windows 7 with the virtual NAT device and systems aside two Office work above RedHat 6.2 with a bridged virtual device. We use bridged on the sides of the office, because we have an application that cannot use NAT and we use NAT on laptops, because our VPN allows only a single IP address by when working remotely.

What we see on the systems side office, is that when there are several guests running, any network operation performed on more than two people will fail. I can't go to any guest and the first two works, the third or more will fail. If I recycle the interface on a deposit, it will usually start working immediately, but then one of the previous guests who worked will stop. If I leave the comments all sit for a while (minutes maybe 5 or 10, have not really timed), the first two I hit (seems not serious if it's HR, SuSE, Solaris, you have) will work and the third or more will not. We first noticed this with DNS, but soon found that the same is true for ping or traceroute to name servers.

Books spread never this problem, so I think it's something to do with the bypass.

I created a tcpdump on the host and each guest. Everything seems normal, when it works, but on a failing guest, I don't see any traffic outside the host or guest.

I've chipped away at this for one day before coming here. Summer through the logs of the system on the host, the guest and vmware logs. Piddled autour with settings on the host kernel tcp. No luck so far. If I do something wrong with the configuration I would rather know that now just go to the 9.0.2 update, in the hope that something is fixed it.

Welcome to the community,

This problem could be related to the physical switch port configuration. Several switches come with port security enabled by default (or it is configured by purpose) that limit the number of MAC addresses that can connect to the switch port.

André

Tags: VMware

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