What is the Administrattive Distance Of Default Route

what is RIB-failure in BGP

In a layer 2 switch The diffrent networks can't communicate. i think the switch use only MAC address for taking forwarding dicision my qustion is that how will switch identify the diffrent networks. Because it is a layer 2 device it works the basis o...

i have a layer 2 switch, if i create two vlan's, without inter vlan routing the systems in both vlan's can't communicate.The same effect i feel simply i separate the systems using two subnet mask my qustion is that what is the diffrence between both ...