Bgp

Junos Basics - Configuring BGP

2012-08-01 ·3 min read

I’m stuck deep in Junos these days. I mean deep. I have an F5 load balancer and an ASA 5520; the rest of my stuff is Juniper. That means I have some learning to do. Here’s one of the …

bgp ebgp ibgp juniper junos

VRF-Aware IPSec Tunnels

2011-12-13 ·5 min read

Man, time is hard to come by of late. I’ve had so little time to rest that’s it’s hard to get my thoughts together. It’s a good thing in this case, though, since it’s my …

bgp ipsec leaking mpbgp tunnel vpn vrf

BGP Notes - Backdoor Routes

2011-06-11 ·1 min read

The fact that eBGP has an AD of 20 can be a problem. You may have a very short path via EIGRP (or OSPF or RIP or whatever other IGP), but the longer eBGP path will be preferred. For God’s sake, …

350-001 backdoor bgp notes routes

RFC 3065 BGP confederations reduce the size of full mesh iBGP ASes by dividing it up into different areas. Confederations also remove the need for BGP synchronization since all iBGP routers will have …

350-001 bgp ccie confederations written

BGP Notes - Route Reflectors

2011-06-11 ·1 min read

Route reflectors remove the requirement of having a full mesh iBGP network. Any iBGP route a router reflector learns is sent to all route reflector clients. Non-client iBGP neighbors do not get the …

350-001 bgp ccie reflector route written

BGP Notes - Synchronization

2011-06-11 ·1 min read

With synchronization on, route must be synchronized to an IGP in order for that routes to be able to be voted ‘best" by BGP. That means the exact route must already be in the routing table …

350-001 bgp ccie notes synchronization written

BGP Notes - Authentication

2011-06-10 ·1 min read

Corrections welcome. It’s simple as pie to enable MD5 auth to a BGP peer. R102(config-router)#neigh 192.0.2.101 pass MYKEY

350-001 authentication bgp ccie notes written

BGP Notes - Path Decision

2011-06-09 ·2 min read

This is required blogging…and reading for that matter. A good chunk of this is taken from my CCNP posts from last year. Corrections, please. -—- How does a BGP router decide which BGP …

350-001 bgp ccie decision notes path written

BGP Notes - Path Attribute Categories

2011-06-08 ·1 min read

Make my corrections! Please! Well-known mandatory : These PAs must be recognized by all BGP routers and passed along to other peers. Well-known discretionary : These PAs do not need to be in every …

350-001 attribute bgp ccie notes pa path

BGP Notes - Message Types

2011-06-07 ·1 min read

Corrigeme, por favor. Open : When a neighbor is configured, the router sends an open to that neighbor to get the ball rolling. Destination: The neighbor's configured IP Important fields: My AS …

350-001 bgp ccie message notes types