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Tag: BGP

RFC8277 breaks backwards compatibility

December 21, 2024 Dmytro Shypovalov Leave a comment

A quick public service announcement for anyone implementing BGP-LU or deploying it in a multivendor environment.…

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Filed under: BGP, EPE, MPLS

Egress Peer Engineering: building blocks

October 7, 2024 Dmytro Shypovalov Leave a comment

Since exploring the EPE basics, now it’s time to understand the building blocks of the solution.…

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Filed under: BGP, EPE, MPLS, Segment Routing, SR-TE

Egress Peer Engineering: basics

September 23, 2024 Dmytro Shypovalov Leave a comment

Egress Peer Engineering extends regular BGP policies to provide more flexibility.…

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Filed under: BGP, EPE, MPLS, Segment Routing, SR-TE

How to troubleshoot routing protocols session flaps – part 1

October 29, 2020 routingcraft 7 Comments

Instability of routing protocol sessions – or, in the network engineers’ slang, flaps, is by far the most common and the most basic routing problem that ever occurs.

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Filed under: BGP, troubleshooting

Equal Routes

June 17, 2020 routingcraft 1 Comment

In highload cloud networks there is so much traffic that even 100G/400G port speeds do not suffice, so sharing the load over multiple links is the only feasible solution.

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Filed under: BGP, ECMP, load balancing, MPLS, Segment Routing, SR-TE

Segregated Routing

May 28, 2020 routingcraft 3 Comments

For any network that provides routing services to customers it is important to segregate them in different virtual topologies that don’t interfere with each other.

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Filed under: BGP, EVPN, L3VPN, MVPN, VRF

Close to the Edge

May 6, 2020 routingcraft 6 Comments

PE-CE routing in MPLS L3VPN is an important topic which confuses a lot of people. Thanks to EVPN, it is now used not only in ISP but also DC networks.

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Filed under: BGP, EIGRP, fast convergence, IS-IS, L3VPN, MPLS, OSPF, PIC, RIP, VRF

Seamless Suffering

March 13, 2020 routingcraft 3 Comments

This story is about the importance of remembering networking fundamentals when dealing with advanced routing topics.

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Filed under: BGP, IS-IS, LDP, MPLS, OSPF, redistribution

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tags

anycast routing (3) ARP (1) BGP (8) ECMP (3) EIGRP (1) EPE (3) EVPN (4) fast convergence (4) IGMP (1) IS-IS (4) L3VPN (2) LDP (2) load balancing (1) MLAG (1) MPLS (14) multicast (2) MVPN (2) network design (4) OSPF (3) PIC (1) PIM (2) redistribution (2) RIP (1) RSVP-TE (2) Segment Routing (10) SR-TE (10) TI-LFA (2) traffic engineering (3) troubleshooting (1) VRF (2)