When it joins a device stack, its default stack member number changes to the
Ships with a default stack member number of 1. You can display the stack member number by using the show switch EXEC command.Ī new, out-of-the-box device (one that has not joined a device stack or has not been manually assigned a stack member number) The member number also determines the interface-levelĬonfiguration that a stack member uses. The stack member number (1 to 9) identifies each member in the switch stack. In addition, keepalive messages are sent and received between the active and standby devices. If the active device does not respond, the standby device becomes the active device. If the standby device does not respond, a new standby device is elected. If a stack member does not respond, that member is removed from the stack. Hello messages are sent and received by all stack members. You can connect standaloneĭevices to an existing device stack to increase the stack membership.
You can connect one standaloneĭevice to another to create a stack containing two stack members, with one of them as the active switch. A switch stack always has one active switch.Ī standalone device is a device stack with one stack member that also operates as the active switch. The switches in the stack must be homogeneous and mustĪ switch stack has up to stack members connected through their stack ports. Each stack member has aĬurrent copy of these files for back-up purposes. The interface-level settings for each stack member. TheĬonfiguration files include the system-level settings for the switch stack and Interface-level features for each stack memberĬontains the saved and running configuration files for the switch stack. (global) features that apply to all stack members If the active switchīecomes unavailable, the standby switch assumes the role of the active switch,Īnd continues to the keep the stack operational.Ĭontrols the operation of the switch stack, and is the single point of LayerĢ and Layer 3 protocols present the entire switch stack as a single entity toĪlways has one active switch and one standby switch. The stack members work together as a unified system. Can have up to nine stacking-capable switches connected through their
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