Cisco WS-X6748-SFP 48-Port CEF720 Gigabit Ethernet SFP Module with DFC3B Distributed Forwarding Card.Model Number: WS-X6748-SFPForwarding Card Part Number: WS-F6700-DFC3B V03Compatible Models: Cisco Catalyst 6500 6500-E Series (6506, 6509, 6513 (slots 9-13 only))Specifications:DFC3B Distributed forwarding card Specifications:• Default memory: 256 MB on interface module• MPLS support: Yes• ACL labels: 4096KB (refer to software release notes)• ACE counters: Yes• IPv4 routes: 256KB entries• NetFlow entries: 128KBChassis/slot restrictions:• The module is not supported in the Catalyst 6503 switch chassis• The WS-X6748-SFP module can occupy any slot in any other Catalyst 6500 or Catalyst 6500-E chassis with the exception of the Catalyst 6513 chassis where the module must be installed only in slots 9–13. The module will not power up if it is installed in slots 1–8• This Card has the DFC3B daughter card upgrade. Supervisor Engine 720 support required.