What are differences betweeen BGP and IBGP

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Accepted Answer

BGP is used for routing between different autonomous systems, while IBGP is used for routing within the same autonomous system.

BGP (Border Gateway Protocol) is an exterior gateway protocol used for routing between different autonomous systems.
IBGP (Internal Border Gateway Protocol) is used for routing within the same autonomous system.
BGP is used to exchange routing information between different autonomous systems (ASes) on the internet.
IBGP is used to distribute routing information within an AS.
BGP uses external BGP (eBGP) to communicate between different ASes, while IBGP is used to communicate within the same AS.
BGP uses TCP as its transport protocol, while IBGP uses TCP as well.
BGP routers exchange full routing tables with each other, while IBGP routers only exchange information about routes learned from external BGP peers.
BGP routers typically have more complex configurations and require more resources compared to IBGP routers.

Accepted Answer

BGP (Border Gateway Protocol) and iBGP (internal Border Gateway Protocol) are both routing protocols used in computer networks. BGP is typically used for routing traffic between different autonomous s...read more

Here are some of the main differences between BGP and iBGP:

Scope of operation: BGP operates between different autonomous systems (ASes), while iBGP operates within the same AS.
Next-hop handling: BGP changes the next hop address for a route when advertising it to a neighbor in a different AS, whereas iBGP doesn't modify the next hop address when advertising to other routers in the same AS.
Routing updates: BGP sends routing updates to its neighbors, but doesn't forward updates received from one neighbor to another. In contrast, iBGP forwards updates received from one neighbor to all other iBGP neighbors within the same AS.
Administrative distance: The administrative distance for BGP is typically higher than iBGP. This means that BGP routes are preferred over iBGP routes when both are available.
Path selection: BGP uses a more complex path selection process than iBGP, taking into account various attributes such as path length, local preference, and AS path. In contrast, iBGP typically uses a simpler path selection process based on shortest path.

What are differences betweeen BGP and IBGP

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