Catalyst 4500 E-Series with CenterFlex Technology-Technical Deep Dive Agenda 1. Catalyst 4500 Centralized Architecture 2. Catalyst 4500 E-Series Overview 3. Technical Deep Dive –TCAMS –QoS –HA/Management –Multicast Cisco Catalyst 4500 Architecture Cisco Catalyst 4500 Utilizes a Centralized Architecture Cisco Catalyst 4500 is a shared memory switch All forwarding, queuing, security is implemented on the Supervisor The individual line cards are considered to be ‘transparent’ -Contain simple “stub” ASICs and the PHY‘s -No local switching Each classic line card has 6 Gbps (full duplex) connections to the central forwarding engine
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Catalyst 4500 E-Series with CenterFlex Technology-Technical Deep Dive
Cisco Catalyst 4500 ArchitectureCisco Catalyst 4500 Utilizes a Centralized Architecture Cisco Catalyst 4500 is a shared memory switch All forwarding, queuing, security is implemented on the Supervisor The individual line cards are considered to be ‘transparent’
-Contain simple “stub” ASICs and the PHY‘s-No local switching
Each classic line card has 6 Gbps (full duplex) connections to the central forwarding engine
E-Series line cards have a 24 Gbps (full duplex) connection to the central forwarding engine
Switching Module ArchitectureIEEE 802.3 Flow Control (Blocking GE Ports)1.802.3x is an IEEE standards-based mechanism used to control data flow2.802.3x utilizes pause frames (DA MAC 01-80-C2-00-00-00-0F) to signal flow control between end station and switch 3. Flow control operation steps Data flows to switch Switch congested so “pause” frame sent End station waits required time before sending
Cisco Catalyst 4500 supervisors support both Tx and Rx pause frames
Dedicated hardware capacity for forwarding Dedicated hardware capacity for features Ample headroom for future requirements Line rate performance for security and QoS