This file contains information for VSC9953, a Vitesse L2 Switch IP
  which is integrated in the T1040/T1020 Freescale SoCs.
  
  About Device:
  =============
  VSC9953 is an 8-port Gigabit Ethernet switch supports the following features:
  	-	8192 MAC addresses
  	-	Static Address provisioning
  	-	Dynamic learning of MAC addresses and aging
  	-	4096 VLANs
  	-	Independent and shared VLAN learning (IVL, SVL)
  	-	Policing with storm control and MC/BC protection
  	-	IPv4 and IPv6 multicast
  	-	Jumbo frames (9.6 KB)
  	-	Access Control List
  	-	VLAN editing, translation and remarking
  	-	RMON counters per port
  
  Switch interfaces:
  	-	8 Gigabit switch ports (ports 0 to 7) are external and are connected to external PHYs
  	-	2 switch ports (ports 8 and 9) of 2.5 G are connected (fixed links)
  		to FMan ports (FM1@DTSEC1 and FM1@DTSEC2)
  
  Commands Overview:
  =============
  Commands supported

  	- enable/disable a port or show its configuration (speed, duplexity, status, etc.)
  	- port statistics
  	- MAC learning
  	- add/remove FDB entries
  	- Port-based VLAN
  	- Private/Shared VLAN learning
  	- VLAN ingress filtering

  	- Port LAG

  
  Commands syntax

  ethsw [port <port_no>] { enable | disable | show } - enable/disable a port; show a port's configuration
  ethsw [port <port_no>] statistics { [help] | [clear] } - show an l2 switch port's statistics
  ethsw [port <port_no>] learning { [help] | show | auto | disable } - enable/disable/show learning configuration on a port
  ethsw [port <port_no>] [vlan <vid>] fdb { [help] | show | flush | { add | del } <mac> } - add/delete a mac entry in FDB; use show to see FDB entries;
  											  if [vlan <vid>] is missing, VID 1 will be used
  ethsw [port <port_no>] pvid { [help] | show | <pvid> } - set/show PVID (ingress and egress VLAN tagging) for a port
  ethsw [port <port_no>] vlan { [help] | show | add <vid> | del <vid> } - add a VLAN to a port (VLAN members)
  ethsw [port <port_no>] untagged { [help] | show | all | none | pvid } - set egress tagging mode for a port
  ethsw [port <port_no>] egress tag { [help] | show | pvid | classified } - configure VID source for egress tag.
  									  Tag's VID could be the frame's classified VID or the PVID of the port
  ethsw vlan fdb { [help] | show | shared | private } - make VLAN learning shared or private
  ethsw [port <port_no>] ingress filtering { [help] | show | enable | disable } - enable/disable VLAN ingress filtering on port

  ethsw [port <port_no>] aggr { [help] | show | <lag_group_no> } - get/set LAG group for a port

  => ethsw show

      Port   Status     Link    Speed   Duplex
         0  enabled     down       10     half
         1  enabled     down       10     half
         2  enabled     down       10     half
         3  enabled       up     1000     full
         4 disabled     down        -     half
         5 disabled     down        -     half
         6 disabled     down        -     half
         7 disabled     down        -     half
         8  enabled       up     2500     full
         9  enabled       up     2500     full
  =>