Tag: ccnp-rs
OSPF Summarization Troubleshooting
Scenario: Mystical Corporation is using OSPF within their autonomous system. Their network is configured using different areas which seems to be working fine. One of the network engineers configured a summary for area 0 but it seems it’s…
Read More »BGP Soft Reconfiguration
Scenario: You are a network engineer responsible for the network for a local fighting tournament. Two of the fighters exchange tactics using BGP to advertise the networks. They don’t want to exchange everything they know so they are…
Read More »BGP Timers
Scenario: You are a film producer and parttime network engineer. You use BGP to connect two sites to each other but you feel things are a little slow. Let’s see if you can tune up some of those…
Read More »BGP Filtering Maximum Prefix
Scenario: The national hedgehog protection foundation needs your help with their network. They are using BGP for their International networking but the router they are using is a bit old and doesn’t take many prefixes in its BGP…
Read More »BGP Attribute Router ID
Scenario: You are one of the trainees at a fairly small ISP. Your boss is on vacation and all colleagues are out of the office troubleshooting problems at customers. You receive a phonecall of one of the network…
Read More »BGP Attribute AS Path Ignore
Scenario: You are responsible for a International network. All routers are connected through BGP. One of the network administrators in NewDelhi configure AS Path prepending for their AS so Paris will send all traffic through Sydney. You heard…
Read More »BGP Peer Group
Scenario: Your autonomous system has a lot of IBGP routers. You are already familiar with route reflectors which saves you a lot of trouble configuring all the IBGP neighbor peerings. You just read about BGP peer groups which…
Read More »BGP Synchronization
Scenario: You are a freelance network consultant specialized in solving BGP problems. One of your customers, a small ISP has trouble with customers that are unable to reach each other. They use BGP synchronization on some of their…
Read More »BGP Next-Hop Self Manual
Scenario: As a junior networking engineer you were always fascinated with science fiction movies, that’s why you are now working at a company specialized in special effects. The closest you got to light speed was sending bits and…
Read More »OSPF per Neighbor Cost
Scenario: The local fish trading market needs your help with their OSPF network. It seems their routers are unable to change the bandwidth or cost on the interfaces so you need to use another solution to influence OSPF…
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