ping network is unreachable linux to different vlan

Uplink=vmnic3 #The physical uplink you want to check. Vswitch=vSwitch2 #The vSwitch you want to test your VLANs on. The script, make sure you define your appropriate variables first! (Also attached as a file to this post.) Successfully pinged target IP 10.1.30.1 for VLAN 30 on uplink vmnic3 Successfully pinged target IP 10.1.20.1 for VLAN 20 on uplink vmnic3 The script reads the network information from the file /tmp/nets.csv which should look like this: I successfully tested this script against an ESXi 5.5 host but it should work on 5.1 just as well. It could be further automated for things like reading existing Port Group VLANs and vSwitch uplinks, but I didn't bother with that for now.

It re-configures a temporary vmkernel interface for each VLAN and tries to ping a specified IP, reporting error or success.

Since it might come in handy I decided to write a small ESXi shell script for this task.

Repeat that for every physical vmnic uplink and VLAN. If systems are active in these VLANs you should see a few broadcasts or multicasts and it means the host is able to receive frames on this NIC for this VLAN. # pktcap-uw -uplink vmnic3 -dir 0 -capture UplinkRcv -vlan 100 The following example command will capture receive-side frames tagged with VLAN 100 on uplink vmnic3: You can automate that with a bit of shell scripting if that's your thing.īut if you have ESXi 5.5 you can use the pktcap-uw utility on the shell to check if your host receives frames for a specific VLAN on an uplink port: You would need to re-configure the IP/VLAN of your test vmkernel interface each time to check another VLAN and switch active uplinks. Also a vmkernel interface is mapped to a single physical uplink unless you use etherchannel/LACP (route based on IP-hash). You can only vmkping from a specific, configured vmkernel interface, and that's where the VLAN is defined. I'm pretty sure it's possible to do something this way. However how could I ping specific VLANS on specific gateways to be assured connectivity exists? What would be the syntax for the command would someone kindly provide a example Too bad you don't have a vDS with the health check feature available.

Ping network is unreachable linux to different vlan