Cisco

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

EIGRP Notes - Authentication

2011-06-10 ·1 min read

Corrections - I invite them. 1. Create the keys in the keychain. R101(config)#key chain KEYCHAIN R101(config-keychain)#key 1 R101(config-keychain-key)#key-str R101(config-keychain-key)#key-string …

350-001 authentication ccie chain eigrp key md5 written

Corrections appreciated. Type 0 : No authentication. This is the default type. R0(config-if)#ip ospf authentication null ----- R0(config-router)#area 1 virtual-link 2.2.2.2 authentication null Type 1 …

350-001 authentication ccie digest md5 ospf type 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

BGP Notes - Neighbor States

2011-06-07 ·1 min read

Corrections appreciated. Idle : There is no relationship, but the router sends out a TCP SYN to the neighbor to get the ball rolling. Idle (admin) : The neighbor is admined down. Connect : The router …

350-001 bgp ccie notes peer state

EIGRP Notes - Route Filtering

2011-06-07 ·1 min read

As always, correction are encouraged. You can configure an EIGRP router to filter routes from being advertised or from being accepted. Objective: Filter out the route to 10.0.254.1/32 from being …

350-001 ccie eigrp filtering notes route

EIGRP Notes - Unequal Cost Path Load Balancing

2011-06-06 ·1 min read

Per the standard rules, please correct anything that’s wrong. One of EIGRP’s big features is the ability to use unequal cost paths for load balancing. This is done with the variance …

balancing ccie cost eigrp notes path unequal variance

EIGRP Notes - Message Types

2011-06-05 ·1 min read

Please correct if I’m being stupid…which is a lot of the time. Hello : Discovers and maintains neighbors Destination: 224.0.0.10 Important fields: K values Update : An update to the …