Cisco 500 Series Administration Guide

Administration: Stack Management
Unit Failure in Stack
Cisco 500 Series Stackable Managed Switch Administration Guide 80
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The following shows an example of auto numbering when a new unit joins the
stack. The existing units retain their ID. The new unit receives the lowest available
ID.
Auto Number Unit
The following shows what happens when a user-assigned, master-enabled unit
with Unit ID 1 joins a stack that already has a master unit with user-assigned unit ID
1. The newer Unit 1 does not join the stack and is shutdown.
User-assigned Master-enabled Unit
Unit Failure in Stack
Failure of Master Unit
If the Master fails, the backup unit takes over the master role and continues to
operate the stack normally.

Cisco 500 Series Specifications

General

Model	Cisco 500 Series
Category	Switch
Mounting	Rack-mountable
Management	Web-based, CLI, SNMP
Ports	24, 48
Port Speed	10/100/1000 Mbps
PoE Support	Available on some models
Switching Capacity	Up to 176 Gbps
MAC Address Table Size	16, 000 entries
Security	ACLs, 802.1X
Quality of Service (QoS)	Yes
Dimensions	Varies by model
Weight	Varies by model
Humidity	10% to 90% non-condensing
Power Supply	Internal
Power Consumption	Varies by model
Jumbo Frame Support	Up to 9216 bytes