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Q
What is a Cisco Catalyst Stack Kit?
A
A Cisco Catalyst Stack Kit is a combination of stacking cables and modules that enables multiple Catalyst switches to operate as a single logical unit for simplified management and redundancy.
Q
Which Catalyst switch models support Stack Modules?
A
Catalyst switch models from the 2960-X, 3650, 3850, 9300 and 9400 series support Cisco Stack Modules, allowing scalable stacking of up to nine switches.
Q
How many switches can I stack with Cisco Catalyst kits?
A
You can stack up to nine Cisco Catalyst switches in a single stack, depending on the series and Stack Kit bandwidth specifications.
Q
What stacking bandwidth do Catalyst Stack Modules provide?
A
Cisco Catalyst Stack Modules deliver up to 480 Gbps of bi-directional throughput per stack, ensuring high-performance inter-switch communication.
Q
Can I mix different Catalyst switch models in one stack?
A
Cisco supports stacking only identical switch platforms and software versions; mixing different models or IOS versions is not recommended.
Q
What types of stacking cables are used with Catalyst Stack Kits?
A
Cisco Catalyst Stack Kits use proprietary copper or fiber stacking cables—in lengths of 0.5 m, 1 m, and 3 m—designed for low-latency, high-bandwidth interconnects.
Q
Are Catalyst Stack Modules hot-swappable?
A
Yes, Cisco Catalyst Stack Modules and cables are hot-swappable, allowing you to add or replace components without shutting down the entire switch stack.
Q
How does stacking improve network redundancy?
A
Stacking creates a resilient ring topology; if one switch fails, traffic automatically reroutes over alternative paths, maintaining network uptime.
Q
How do I install a Cisco Catalyst Stack Kit?
A
To install a Stack Kit, power down the switches, attach the Stack Module to the backplane, connect the stacking cables in a ring, then power the stack back up.
Q
How do I manage a Catalyst switch stack?
A
A Cisco Catalyst stack is managed as a single virtual switch via CLI, Cisco DNA Center, or Cisco Prime, simplifying configuration and monitoring.
Q
Can I upgrade software on a stacked Catalyst deployment?
A
Yes, Cisco supports In-Service Software Upgrade (ISSU) on stacked Catalyst switches to minimize downtime during IOS upgrades.
Q
How do I monitor the health of my Catalyst stack?
A
Use CLI commands like show switch stack, Cisco DNA Center, or SNMP-based tools to monitor stack member status, bandwidth utilization and link integrity.
Q
What licensing considerations apply to Catalyst stacks?
A
Licenses are applied per switch in the stack; ensure each member has the required Cisco DNA or feature license to maintain unified feature access.
Q
Can I extend my stack over long distances with fiber?
A
Yes, select Cisco Catalyst Stack Modules support SFP or QSFP fiber transceivers to extend stacking links up to several kilometers.
Q
What happens if a stacking cable is disconnected?
A
If a cable is disconnected, the stack reconfigures into a linear topology and traffic reroutes through remaining links, preserving connectivity.
Q
How do I choose the right Stack Kit for my network?
A
Select a Stack Kit based on switch series compatibility, required stacking bandwidth, cable length and whether copper or fiber interconnects are needed.
Q
Where can I purchase Cisco Catalyst Stack Modules?
A
Cisco Catalyst Stack Modules and Kits are available through Cisco’s authorized resellers, partners and the Cisco Commerce Workspace portal.
