PANOS 10.x - share interface in Multi-vSYS mode

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PANOS 10.x - share interface in Multi-vSYS mode

L1 Bithead

Hello All,

 

We are working on a design to move Cisco ASAs firewalls into PA 5260 with Multi-vSys mode enabled, so each Cisco ASA is a separate vSys. 

 

While everything else looks like nice and easy-to-convert, we have problems with shared interface. In Cisco world multicontext ASA might have interface in same VLAN X and SUBNET Y on each context easily. 

 

Is it possible to do the same on Palo Alto platform? I am familiar with Shared Gateway and External Zones, but it doesn't look like it will solve our problems in full. For example we need to have 3 sub-interfaces in same subnet (one per context), is it actually possible to create those and add into single Shared Gateway?

 

Thanks! 

4 REPLIES 4

L0 Member

Hi,

 

For example we need to have 3 sub-interfaces in same subnet (one per context), is it actually possible to create those and add into single Shared Gateway?

You can configure sub-interfaces with the same IP-Address for different context but you can't have the same subinterface L2 Tag (802.1q) within the same physical interface.

 

Hello Fabio,

 

Thanks for your reply. Do you know if that's possible to have 'untagged' physical interfaces added to different contexts within same subnet on a PA box? We can 'tag' them to the same VLAN on a switch. 

L0 Member

Yes, it is. You can assign different physical interfaces to different context with same ip space.

hello Fabio,

 

One question more - you mentioned that "can't have the same subinterface L2 Tag (802.1q) within the same physical interface". Does it also mean that I cannot have 2 subinterfaces with same DOT1Q tag within same PORTCHANNEL interface? 

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