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OSPF

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January 27, 2016  6:00 AM

How to configure OSPF Totally Stubby Area in Cisco Routers- Series 2?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Cisco, Cisco IOS, Cisco Routers, IP Routing, Loopback, OSPF, OSPF protocol, Routing, Routing Table

In my previous post we studied the topology and saw how Type 3, Type 4 and Type  LSA routes are installed in non 0 Area. Now lets configure Area 5...

January 26, 2016  5:16 AM

How to configure OSPF Totally Stubby Area in Cisco Routers- Series 1?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
areas of use, Cisco, Cisco Routers, Loopback, OSPF, OSPF protocol

In this series of posts lets configure OSPF Totally Stubby Area, but before proceeding further lets summarise the below topology

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January 25, 2016  4:45 AM

What is OSPF Totally Stubby Area?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Cisco IOS, Default route, IOS commands, OSPF, router

OSPF Totally Stubby Area basically filters out an information of a OSPF database purely based on the LSA types. An ABR  in a Totally Stubby Area  prevents LSA type 3, Type4 and Type 5  to be flooded in to a Totally Stub Area.  It replaces all these types of LSA with a default route. Basically...


January 24, 2016  5:33 AM

How to configure Stub Area in OSPF – Series 2?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Cisco, Cisco IOS, Dynamic Routing, IP routing protocols, Loopback, OSPF, OSPF protocol, Routing

In my previous post we studied the topology and saw how Type 5 LSA routes are installed in non 0 Area. Now lets configure Area 5 as a stub area. Its very easy to...


January 24, 2016  5:28 AM

How to configure Stub Area in OSPF – Series 1?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Loopback, LSA, OSPF, Routing protocols

In this series of posts lets configure OSPF Stub Area, but before proceeding further lets summarize the below topology

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January 22, 2016  9:41 PM

What is OSPF Stub Area?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Default route, IOS commands, LSA, OSPF, OSPF protocol, router

We all know OSPF as routing protocol is one of most widely used IGP protocol, OSPF happens to be the most scalable IGP protocol. OSPF also happens to be one of complex protocols as it deals with various concepts and terminologies. Once such topic where people get confused is OSPF Area types. I...


November 21, 2015  8:27 AM

A review of CCDE Study Guide by Marwan Al-shawi

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
BGP, Cisco, Cisco certifications, Cisco Press, EIGRP, Network design, Networking, OSPF, Protocols, VPN

Since I received the "CCDE Study Guide" from Jamie Shoup till date, I simply couldn’t able resist reading such a wonder book from Marwan Al-shawi.  I believe it was...


October 8, 2015  6:11 PM

CCDE must read , Series 1 – Review for “Optimal Routing Design”

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
BGP, Cisco certifications, EIGRP, Network, Network design, OSPF, VPN

When it comes to CCDE preparations one should master many concepts, one should refer to plenty of  resources available in  form of books, articles, Cisco validated designs, Videos,RFCs etc.  For every journey there is a starting point, for CCDE I believe 

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