Tuesday, October 2, 2012

Bandwidth

#bandwidth {intended bandwidth in kbps}

#bandwidth inherit {kbps}     
                        : Specifies how a subinterface inherits the bandwidth of its main interface.

#bandwidth receive {kbsp}      
                       :Enables asymmetric transmit/receive operations so that the transmitted (inherit kbps) and received bandwidth are different
  • If the receive keyword is not used, by default, the transmit and receive bandwidths will be assigned the same value.
  • We cannot adjust the actual bandwidth of an interface using this command.
  • This is only a routing parameter. It does not affect the physical interface.
  • For some media, such as Ethernet, the bandwidth is fixed; 
  • for other media, such as serial lines, you can change the actual bandwidth by adjusting the hardware. For both classes of media, 
  • you can use the bandwidth command to communicate the current bandwidth to the higher-level protocols.
  • The bandwidth inherit command controls how a subinterface inherits the bandwidth of its main interface.
  • The no bandwidth inherit command enables all subinterfaces to inherit the default bandwidth of the main interface, regardless of the configured bandwidth. 
  • If the bandwidth inherit command is used without configuring a bandwidth on a subinterface, all subinterfaces will inherit the current bandwidth of the main interface. 
  • If you configure a new bandwidth on the main interface, all subinterfaces will use this new value.
  • If you do not configure a bandwidth on the subinterface and you configure the bandwidth inherit kbps command on the main interface, the subinterfaces will inherit the specified bandwidth.
  • In all cases, if an explicit bandwidth setting is configured on an interface, the interface will use that setting, regardless of whether the bandwidth inheritance setting is in effect.


Bandwidth Receipt      ?  (need update)


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