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February 2013

Enhanced Object Tracking

Object tracking is an IOS feature that allows separation between the object that is tracked and the action to be tacken when the status of that object changes. The objects to be tracked are identified by a NUMBER and different client applications (HSRP, GLBP, VRRP) can track the staus of …

Tunnel Interfaces

1. Tunnel Modes A tunnel makes two distant devices appear directly connected over a logical interface. When a packet is sent out on the tunnel interface, it is encapsulated in the “carrier” protocol and sent over a physical interface.The most used carrier protocols are GRE, IP-in-IP and IPv6, and this …