Cisco Systems WSC2960XR48LPDI, WSC2960X48TSL, WSC2960XR24TDI, WSC2960XR48FPDI Investment Protection

Q.What are the FlexStack-Plus high-availability features?

A.The following features enhance high availability and manageability across a stack:

●Cross-stack EtherChannel

●SPAN

●FlexLink technology

●Hitless voice calls

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Q.Is FlexStack-Plus stacking backward compatible with FlexStack?

A.Yes. Unlike competing products, the FlexStack-Plus stacking is backward compatible with FlexStack to preserve customer investment. This allows mixed stacking of Cisco Catalyst 2960-S and Cisco Catalyst 2960- SF LAN Base series with 2960-X LAN Base series for investment protection.

Q.What is a mixed stack?

A.The stack is called a mixed stack if it has both the Cisco Catalyst 2960-S Series Switch and Cisco Catalyst 2960-X Series Switches. The mixed stack features are limited to Cisco Catalyst 2960-S Series features. (See Table 4.)

Table 4.	FlexStack Combinations
Stack Combination		Max Stack Bandwidth	Stack Limit	IOS License
2960-XR		80G	8	IP Lite
2960-X		80G	8	LAN Base
2960-S/SF		40G	4	LAN Base
Mixed Stack: 2960-X and 2960-S/SF		40G	4	LAN Base

Q.Does mix stack require any configuration on Cisco Catalyst 2960-X switches?

A.Yes. The switch stack speed should be set to 40 using configure mode command “switch stack-speed 40” on Cisco Catalyst 2960-X switches to stack with Cisco Catalyst 2960-S switches. While forming a homogenous stack of Cisco Catalyst 2960-X revert back the stack speed to 80 using “no switch stack-speed 40”.

Q.Can Cisco Catalyst 2960-X switches and 2960-XR switches stack together?

A.No. Cisco Catalyst 2960-X and 2960-XR switches can’t be stacked together, even though they belong to the same 2960-X series they do not share same IOS License models.

Q.What are the possible mixed-stack combinations?

A.The LAN Base models can only form mixed stacks. The possible mixed-stack combinations are listed in Table 5.

Table 5. Possible Mixed-Stack Combinations

Mixed-Stack Combination

2960-XR IP Lite

2960-X LAN Base

2960-S/SF LAN Base

2960-XR

IP Lite

Yes

No

No

2960-X

LAN Base

No

Yes

Yes

2960-S/SF LAN Base

No

Yes

Yes

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