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Cisco Stacking Switches—StackWise and StackWise Plus 
Stackable Switch 
 Allows access to all switches with a single IP a...
Logical and physical ring architecture of the Catalyst 3k 
Comprises two 16 Gbps counter-rotating rings 
-Data on both rin...
Eight TX/RCV pairs per ring 
That is 16 pairs (8 channels per ring) 
Each TX/RCV pair has 2 traces that use differential s...
Stackwise Vs Stackwise Plus 
Spatial Reuse 
Note: These are packets not tokens. There is only 1 token per ring. 
Ring Heal...
It refers from 
http://d2zmdbbm9feqrf.cloudfront.net 
More related topics 
More Cisco products and Reviews you can visit: ...
It refers from 
http://d2zmdbbm9feqrf.cloudfront.net 
More related topics 
More Cisco products and Reviews you can visit: ...
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Cisco stacking switches—stack wise and stackwise plus

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Leading Cisco networking products distributor-3Anetwork.com
Cisco Stacking Switches—StackWise and StackWise Plus

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Cisco stacking switches—stack wise and stackwise plus

  1. 1. Cisco Stacking Switches—StackWise and StackWise Plus Stackable Switch  Allows access to all switches with a single IP address  Provides the means to manage the stack via CLI or MIB  Can connect all switches in a physical ring topology  Traffic flows in either direction of the ring, some Resiliency  Automatic Master selection & backup 1:N  Automatic IOS versioning and Update!  Automatic configuration of new members  Automatic unit replacement (configuration of old switch retained)  Stateful switch over in case of master failures  Ring resiliency similar to FDDI, provides HA and Resiliency  Sub-millisecond Master failover  Smart Multicast  Cross-stack features (Etherchannel and QoS) Cisco StackWise (Plus) 1
  2. 2. Logical and physical ring architecture of the Catalyst 3k Comprises two 16 Gbps counter-rotating rings -Data on both rings when fully connected: Stackwise-32 Gbps Stackwise Plus-64 Gbps Internal Connection:  On Cisco 3750V2, 3750G: The Stack Ring is the switching fabric  Cisco 3750E, 3750X: The Stack Ring only interconnects the individual Switch Fabrics Understanding the Stack Cable 2
  3. 3. Eight TX/RCV pairs per ring That is 16 pairs (8 channels per ring) Each TX/RCV pair has 2 traces that use differential signaling. That is 32 traces in total Each TX/RCV pair runs at 2.5 Gbps 8B/10B encoding is used. (for every ten bits sent, eight bits are data and two bits are overhead) Understanding the Stack Ring Speed 16 Channels x 2.5 Gbps x 8B/10B = 32Gbps Or bidirectional 16 Gbps per cable = 32Gbps Or Two Rings running at 16Gpbs each = 32Gbps 3
  4. 4. Stackwise Vs Stackwise Plus Spatial Reuse Note: These are packets not tokens. There is only 1 token per ring. Ring Healing  The switch fabric or port ASIC closest to cable detects link down -Criteria is coding violations in a period of time -Loss of at most one packet that was being transmitted when ring broke -Just microseconds for hardware to detect failure  Each switch signals a bad link to stack its partner  Both ends of the cable loop back on themselves 4
  5. 5. It refers from http://d2zmdbbm9feqrf.cloudfront.net More related topics More Cisco products and Reviews you can visit: http://www.3anetwork.com/blog 3Anetwork.com is a world leading Cisco networking products supplier, we supply original new Cisco networking equipments, including Cisco Catalyst switches, Cisco routers, Cisco firewalls, Cisco wireless products, Cisco modules and interface cards products at competitive price and ship to worldwide. Our website: http://www.3anetwork.com Telephone: +852-3069-7733 Email: info@3Anetwork.com Address: 23/F Lucky Plaza, 315-321 Lockhart Road, Wanchai, Hongkong 5
  6. 6. It refers from http://d2zmdbbm9feqrf.cloudfront.net More related topics More Cisco products and Reviews you can visit: http://www.3anetwork.com/blog 3Anetwork.com is a world leading Cisco networking products supplier, we supply original new Cisco networking equipments, including Cisco Catalyst switches, Cisco routers, Cisco firewalls, Cisco wireless products, Cisco modules and interface cards products at competitive price and ship to worldwide. Our website: http://www.3anetwork.com Telephone: +852-3069-7733 Email: info@3Anetwork.com Address: 23/F Lucky Plaza, 315-321 Lockhart Road, Wanchai, Hongkong 5

Leading Cisco networking products distributor-3Anetwork.com Cisco Stacking Switches—StackWise and StackWise Plus

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