Cannot Ping between Vlans - Help please

RouterOS General
1

Hey Guys,

i have vlans 21 through 26 on my RB450G but i cannot Ping between them, say for example i want to get to a shared folder on a computer on vlan 26 and i am on 21 ( all vlans are using different address ranges)

do i need a firewall rule for this or a NAT accept rule? ifso.. any examples?

thanks in advance

2

By default traffic can pass between all directly connected network, without NAT. If that isn’t working here some ideas in order of likeliness:

  • you are using names instead of IPs when pinging or browsing network shares, and the machines aren’t using a WINS or AD server, but NetBIOS for name resolution. NetBIOS is limited to a broadcast domain and doesn’t work across networks. Use a WINS or AD server, or use IPs
  • you are using Windows Vista or Windows 7. Their host firewalls by default treat the local network different from other networks and will allow ICMP and SMB/CIFS from the local network, but not from other networks. Reconfigure the host firewalls accordingly.
  • you have firewall rules on your router that block that traffic. Edit your rule set accordingly. If you need help with that post the rule set here.
3

Hi there:
I have same problem, can´t ping from mis devides in vLan30 to a pirnter in vLan20.
I use its IP: “ping /t 10.0.20.2” from a PC in vLan30 with 10.0.30.XXX IP.

By default my Mikrotik didn´t allow me to access devices from other vLans.
I tried with with NAT and FILTER rules but I can´t find the solution.

Thank you!

4

I was thinking and testing why my Mirkotik wasn´t routing data between vLans and I finally found the problem… Printer´s network mask was badly typed when the device was configured… :confused:

Thanks!