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| 6.1 |  | Implementing Module Redundancy in a Multilayer Switched Network |
| 6.1.3 |  | Implementing redundant supervisor uplink modules in Catalyst switches |

Supervisor III uplink ports are modular. Modularity lets the administrator install the uplink module to deliver current bandwidth requirements. Modularity also ensures an easy migration path. Available options are four-port autosensing 10/100 Fast Ethernet (RJ-45), four-port 100BASE-FX (MT-RJ), two-port autosensing 10/100 Fast Ethernet (RJ-45), two-port 100BASE-FX (SC), and two-port Gigabit Ethernet SX, LX/LH (SC), or GBIC. Any Fast Ethernet uplink port can use Fast EtherChannel technology. Fast EtherChannel provides up to 800 Mpps of wire-speed, resilient, and scalable bandwidth for data center and backbone implementations.