Network technologies and trends

Dec 7 2015   5:17AM GMT

Palo Alto Networks Firewall Interface Types – Layer 2

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

Layer 2
Palo Alto Networks
Spanning Tree Protocol

Like any other firewalls, Palo Alto Networks Firewall can be deployed in Layer 2 mode. In a Layer 2 deployment mode, the  Palo Alto Networks Firewalls provides switching between two or more networks.  In Layer 2 deployment mode,  a Vlan must be assigned each interface or Vlan object and additional layer 2 sub interfaces must  be assigned to group of interfaces.  The Palo Alto Networks Firewall will perform VLAN tag switching when Layer 2 sub interfaces are attached to a common VLAN object.

Palo Alto Layer 2 Deployment mode

Palo Alto Networks Firewalls Layer interfaces are only capable of supporting 802.1Q  trunks, however they are not capable of supporting any spanning tree protocols (STP) nor do they participate in spanning tree  process. Palo Alto Networks Firewalls simply  forwards the BPDUs, it receives from the peer Switch.

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