Two IPs with different netmask on the same vlan

[gbs]

Can i add two ip in the same vlan?

My Black Diamond (BD8810) have his management interface on my vlan50 with netmask 255.255.0.0 (/16) and i have one Cisco that have the same vlan50 with netmask 255.0.0.0 (/8) but for other network.

I want to move the uplink of this other network to my BD. But the users of the other network need to check my "switch" SNMP via vlan50/8.

So, if i can use two VLAN50 ip address, one with /16 and other with /8 mask i can start to remove the cisco switch.

I know that i will have another problem in the future. That is to block all my traffic from VLAN50/16 to go to VLAN50/8 port. We already do this with the cisco switch, by blocking mac addresses.

[Henrique]

Hi Gerson, you can use the same ipaddress/subnet in different VRs. However, you cannot use the same VRID since the vlan table is shared between VRs.

[Jeremy_Gibbs]

The VID is the vlan, so if you already created it, why would you need to make it again?

[gbs]

@Henrique,
create vlan TEST-VL50 vr "VR-TEST" tag 50

Error: 802.1Q Tag 50 is assigned to VLAN vlan50.

I can't create another vlan using the same vlanID 😕

And i need it to be the same ID "50" because my switch is part of one ring using this tagged vlan.

[Jeremy_Gibbs]

I am assuming vlan50 on the BD and Cisco switch are different and you don't want the users talking? If that isn't the case, proxy arp might take care of some of this.

[gbs]

Ok. I'm going to study this feature and try.

Thanks.