What you should know about BGP-4 | Noction Archives

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BGP-4

What you should know about BGP-4 Protocol

Border Gateway Protocol Version 4 (BGP-4), documented in RFC 1771, is the current exterior routing protocol used for the global Internet. BGP is essentially a distance-vector algorithm, but with several added twists. Other BGP-related documents are RFC 1772 (BGP Application), RFC 1773 (BGP Experience), RFC 1774 (BGP Protocol Analysis), and RFC 1657 (BGP MIB).

BGP/MPLS Layer 3 VPNs Practical Configuration

BGP/MPLS Layer 3 VPNs Practical Configuration

Mar 21 | Blog

In our previous blog article we’ve discussed the benefits and the fundamental principles of BGP/MPLS L3 VPNs. We have...

BGP / MPLS Layer 3 VPNs

BGP / MPLS Layer 3 VPNs

Mar 13 | Blog

What is VPN? Virtual Private Networks (VPN) are designed to provide users with the private networks capabilities over...

Lesser-known BGP path attributes

Lesser-known BGP path attributes

Nov 5 | Blog

The past few weeks we've discussed the main BGP path attributes: the next hop, the AS path, the MED. We also covered...

The BGP Multi Exit Discriminator (MED) attribute and tie-breaking

The BGP Multi Exit Discriminator (MED) attribute and tie-breaking

Oct 28 | Blog

When BGP needs to choose which route to reach a certain destination is best, it first looks at the local preference...

Understanding the AS path and AS path prepending

Understanding the AS path and AS path prepending

Oct 19 | Blog

In earlier articles, we discussed the next hop and local preference attributes. Today we'll be looking at the AS_PATH...

IPv4 BGP vs IPv6 BGP

IPv4 BGP vs IPv6 BGP

Feb 6 | Blog

BGP is older than IPv6. Even BGP-4, the version we still use today, predates IPv6: the first BGP-4 RFC (RFC 1654) was...