Архивы BGP

Setting up BFD on Juniper MX

When one of the channels goes down and in order not to wait for a timer of tens of seconds to break the BGP session and delete the routes, it was necessary to configure the BFD (Bidirectional Forwarding Detection) protocol, which allows you to immediately notify BGP about this and delete the routes going through the non-working neighbor.

Configuring BGP on Juniper MX – traffic balancing

I will give an example of setting up eBGP on Juniper MX204 with several uplinks and balancing traffic between them.

How to configure BGP prefix-limit on Juniper

I will give an example of setting up prefix-limit for BGP so that a neighbor does not accidentally send more routes than he should.

Migrating from Quagga to Bird

For example, I will give a simple example of migrating from Quagga to Bird, that is, how can you install Quagga and Bird at the same time on the same server, and switch between them.

How to set up iBGP in Bird

For example, I will configure the internal BGP protocol in Bird, in my case iBGP was needed in order to transfer user routes from several access servers to a NAT server. As access servers, I configured Accel-ppp (ipoe) and JuniperMX, they all worked simultaneously and balanced users by making an artificial DHCPOFFER delay.

Configuring iBGP on Juniper MX

For example, I will configure Internal BGP on Juniper MX204. Since there are servers with Accel-ppp (ipoe) in the network and you need to balance users between these servers and Juniper, iBGP will transfer user routes with /32 mask from all devices to the main router/routers. iBGP is also needed when there are several links to Uplink providers that are connected to different routers, then you need to configure iBGP between these routers.