05-12-2016 03:21 PM - edited 03-05-2019 04:00 AM
Hi Folks,
Can you tell me WHEN exactly I should use BGP instead of OSPF or EIGRP?
Some Real Life Scenarios
Solved! Go to Solution.
05-12-2016 03:29 PM
It is typically used between different companies, usually when there is more than one path (so failover or load balancing can be managed). For example, between an ISP and their customer, assuming their customer has at least two circuits to the ISP.
OSPF and EIGRP are typically used within a company.
05-12-2016 03:29 PM
It is typically used between different companies, usually when there is more than one path (so failover or load balancing can be managed). For example, between an ISP and their customer, assuming their customer has at least two circuits to the ISP.
OSPF and EIGRP are typically used within a company.
05-12-2016 03:35 PM
Thank you for reply.
So why ISP is not using OSPF or EIGRP for load balancing?
technically it is possible right?
The other question is what BGP CAN do,and OSPF or EIGRP cannot?
05-12-2016 03:36 PM
BGP (B=Border) is purpose built as a routing protocol for the borders between organisations. it has lots of controls that make doing this kind of routing more controllable.
05-12-2016 03:42 PM
05-12-2016 03:50 PM
OSPF is a horrible protocol, and I avoid it at all costs. You wouldn't use OSPF between organisation unless you liked a lot of pain. It just wasn't designed for inter-organisation use.
05-12-2016 03:53 PM
05-12-2016 03:58 PM
Well, it is designed to have an "area 0" which is meant to be some centralised backbone.
What happens when you don't have a centralised backbone? What happens if your company is decentralised?
What happens when there are two organisations and they already have their own area 0's?
All resolvable - in a horribly painful way.
05-12-2016 04:04 PM
Actually I know how OSPF works.
I dont know how just in REAL LIFE SCENARIO it is.
Thank you for your replies
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