| 8.2 |  | The Cisco PIX Security Appliance |
| 8.2.8 |  | Firewall Services Module (FWSM) |

| The Firewall Services Module (FWSM) is a multi-gigabit, integrated firewall module for the Cisco Catalyst 6500 Series switch and the Cisco 7600 Series Internet router . It is fabric-enabled and capable of interacting with the bus and the switch fabric. Based on PIX Security Appliance technology, each FWSM can provide up to 4 Gbps stateful firewall throughput. The FWSM comes with 128 MB of Compact Flash memory and 1 GB of DRAM memory. The memory is not field upgradeable.

The FWSM installs in only certain slots of a Catalyst 6500 9-slot chassis, depending on the arrangement of other cards . On this switch, Slot 1 is reserved for the supervisor engine. The supervisor engine is the control module that defines and drives all operational capabilities of the switch. Slot 2 can contain an additional redundant supervisor engine in the event the supervisor engine in Slot 1 fails. If a redundant supervisor engine is not used, Slot 2 is available for switching modules. The FWSM can be installed in Slots 3 through 9. Up to 4 FWSMs can be installed in one chassis, providing up to 20 Gbps stateful firewall throughput.

Figure shows a deployment scenario using a Catalyst 6500 with the FWSM. Notice that the FWSM enables firewalling between multiple VLANs.

| Resources Firewall Services Module