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Cisco FlexStack stacking with a hot-swappable module and IOS software provides true stacking, all switches in a stack act as a single switch unit. The Cisco FlexStack provides a unified data plane, unified configuration, and single IP address management for a group of switches. The advantages of true stacking are lower total cost of ownership through simplified management and higher availability. Cisco FlexStack supports cross-stack features including Etherchannel, SPAN and FlexLink technology. A stack module can be added to any Catalyst 2960-S switch with LAN Base software to quickly upgrade the switch to make it stack capable, and the switch added to the stack will upgrade to the correct Cisco IOS® Software version and transparently become a stack member. Figure 3 shows the FlexStack stacking module for the Catalyst 2960-S.

Manufacturer :Cisco Systems, Inc
Manufacturer Part Number WS-C3560V2-48PS-E
Product Type: Switch – 48 ports – L3 – Managed
Form Factor Rack mountable – 1U
Switch Ports :48 x 10/100 + 4 x SFP
Power Over Ethernet (PoE) Yes
Flash Memory: 32 MB Flash
Interfaces 24 x 10Base-T/100Base-TX – RJ-45 – PoE
24 x 10Base-T/100Base-TX – RJ-45
1 x console – RJ-45 – management
4 x SFP (mini-GBIC)
Power Device Power supply – internal
Voltage Required :AC 120/230 V ( 50/60 Hz )
Features Redundant Power System (RPS) connector
Width: 44.3 cm
Depth: 29.5 cm
Height: 4.4 cm
Weight :5 kg
MTBF :206,041 hour(s)
Software Included Cisco IOS IP Services

Manufacturer Cisco Systems, Inc
Manufacturer Part Number WS-C3560V2-48TS-E
Product Type Switch – 48 ports – L3 – Managed
Form Factor Rack mountable – 1U
Switch Ports :48 x 10/100 + 4 x SFP
Remote Management Protocol ;SNMP 1, RMON 1, RMON 2, RMON 3, RMON 9, Telnet, SNMP 3, SNMP 2c
Authentication Method Kerberos, RADIUS, TACACS+, Secure Shell v.2 (SSH2)
Flash Memory :32 MB Flash
Interfaces 48 x 10Base-T/100Base-TX – RJ-45
1 x console – RJ-45 – management
4 x SFP (mini-GBIC)
Power Device Power supply – internal
Voltage Required: AC 120/230 V ( 50/60 Hz )
Features Redundant Power System (RPS) connector
Width :44.3 cm
Depth: 29.5 cm
Height :4.4 cm
Weight :4 kg
MTBF 301,886 hour(s)
Software Included Cisco IOS IP Services