====== Cisco Switches ======

  * WS-C3560G-24PS
  * WS-C3560G-48PS-E
  * WS-C3560G-48PS-S

Features:
  * ''G'' gigabit
  * ''X'' Dual Redundant Modular Power Supplies

Power:
  * ''PS'' PoE capable on all ports, but guaranteed 15.4w PoE to only 24 ports in a first-come-first-serve.
  * ''PF'' PoE capable, FULL power. Guaranteed 15.4w PoE to all ports.  until-full basis. 
  * ''T'' means you have a non-PoE switch.  
  * ''TS'' means non-PoE with SFP ports.  

Suffixes:
  * ''-E'' Enerprise (L3 switch) aka ''IP Services feature set''
    * advanced L3
      * EIGRP
      * OSPF
      * BGP
      * PIM
      * IPv6 routing
        * OSPFv3
        * EIGRPv6
    * 
  * ''-S'' ''IP Base feature set''
    * + basic L3
    * + StackPower
    * + MACsec
    * + QoS
    * + ACL
  * ''-L'' ''LAN Base feature set ''
    * L2 only
    * security features
      * ACL
      * DHCP snooping
      * 802.1X
    * more QOS features
    * 128 --> 256 VLANs
  * ''-S' / ''-LL'' in older Catalyst i.e. 2960. Standard Layer 2 IOS feature set (''LAN Lite'') 

===== Stable IOS =====

For legacy switches:
  * 15.2(4)E10
  * 15.0(2)SE12
  * 12.2(55)SE13

===== 3750 vs 3560 =====
  * 3560's and 3750 are eventually the same switches.The only difference is that 3750's switches are based on stacking capabilties. They have a High-Speed stacking bus to give stacking capabilties.
  * Switching capacity (ignoring stack ring) is the same
  * 3750X can be stacked 2x (unidirectional 32Gbit)
  * the 3750X can also share power across stack member


===== C3850 =====

  * WS-C3850-48T-L + 4xSFP+ module. 
    * length 45cm !
    * stacking 480Gb/s

===== WS-C4948-10GE-S =====

  * 2 x X2 slot
    * CVR-X2-SFP10G (aka Cisco OneX Converter Module) for SFP+

===== expansion module2 =====

  * X2 - older (Catalyst 3750-E, 3560-E, older 4500 / 4600) - it is only "converter"
    * CVR-X2-SFP10G (Adapter OneX)
    * one X2 slot = one SFP+ port
  * Catalyst 3750-X / 3650-X only - network module (connected to dataplane)
    * C3KX-NM-10G
      * 2x 1GB SFP or
      * 2x 1GB SFP or 10GP SFP+ (dual role)
  * C3850 - network module (connected to dataplane 480gbit)
    * C3850-NM-2-40G 2x40G QSFP+
    * C3850-NM-2-10G