Category Archives: Cisco Routing & Switching

Why We need BGP

By | March 25, 2020

As we know BGP is an EGP type routing protocol and used for routing between multiple autonomous systems. But this requirement can also be achieve using IGP protocol then why still we need BGP? Yes, we can do the routing between multiple autonomous system using IGP and redistribution and it also works fine. But it… Read More »

VSS Configuration

By | March 25, 2020

VSS (Virtual Switching System) is use to bundle two 6500/4500 series switches and use as an single logical device. VSS configuration is pretty simple. You can see the below example. Once VSS configuration is complete, One switch elects as an active and another one as standby. Active switch handles all layer 2 and layer 2… Read More »

Border Gateway Protocol

By | March 14, 2020

Border Gateway Protocol uses a wide metric of attributes that can be tune. If we are not tuning the attributes then BGP ( Border Gateway Protocol ) behaves like a distance vector routing protocol and uses ASN in the place of hop counts. It is designed to work slowly because on internet or in a… Read More »

Subnet Zero And All Ones Subnet

By | March 14, 2020

Subnet zero and all ones subnet are two different things buth both are co related. Subnet zero means we can use the network ID or network address ( ex. 192.168.1.0 ) as an IP address and we can configure it on our router interface. All ones subnet means we can also use the broadcast ID… Read More »

Etherchannel Load Balancing

By | March 12, 2020

Ether-channel is used to bundle multiple links to increase the bandwidth as well redundancy. All bundled links are used as an single virtual link with total bandwidth of all physical links. Traffic distributes on individual links according the load balancing method. If a link fails then traffic will be move on adjacent link or if… Read More »