Can't seem to get Vlan 1 (default) to trunk traffic through

[Matthew_Rivard]

I've been beating my head against this for a while since I've only
encountered this issue with our Extreme switches and none of our other brands.

For the life of me, I cannot get traffic to move through on the default vlan from our other switches.

I can trunk vlan 1 across on any other switch between them using the standard trunk mode (tagged), but on the Extremes (We have a Black Diamond X8 and numerous x670v, x670g2 and x770s) vlan 1 is blocked.

I've tried leaving the vlan in untagged mode on both sides, tagged mode, and every iteration inbetween.

I can see the default vlan grab an IP address from the DHCP server on that vlan, but it won't push the traffic through beyond that.

Is there some step I'm missing in getting the default vlan to work like any other 802.1q vlan?

[Ronald_Dvorak]

I'm a little rusty on my Cisco skills but have you set the native vlan - if not it's per default 1 and it's untagged.

That would mean you'd need to also set it untagged on the XOS.

[Ronald_Dvorak]

- configure the port as tagged
# configure vlan "Default" add ports 1 tagged

- then you'd check whether you learn about other devices from the connected switch on the port
# show fdb vlan "Default"

[Patrick_Voss]

Hello Matthew,

Can you define "blocked"? Also, how are you testing the traffic flow through these switches?