TLEN5370 Lab 3

TLEN5370 - Lab 3 Lab 3 Logistics Write erase the routers and start from scratch with a default config. Each group will use X.0.0.0/8 where X is the group number for backbone and customer IP space. Each group will use ASN X where X is the group number. Connect your EDGE2.SJO1 router to the exchange switch designated by the instructor. Your EDGE routers interface connecting to the switch should be 9.0.0.X/8

Set up your network so that you can telnet to your routers vs moving the console cable. OBJECTIVE 1 Design and configure a heirarchial backbone topology per the following drawing, notes and requirements EDGE2.NYC1 or EDGE2.SJO1 is a Juniper. All routers are running BGP in a resiliant manner. Your /8 is in BGP. This should be the *only* static route in your network in this objective. We are only building 2 cities for this lab but assume there are 25 more similiar sites on your network. Assume any given city could have up to 10 EDGE routers. Question 1.1 - What IGP design decisions did you make? Question 1.2 - Show relevant IGP config snips from CORE1.SJO1, EDGE2.SJO1 and EDGE2.NYC1. Question 1.3 - What BGP design decisions did you make? Question 1.4 - Show relevant BGP config snips from CORE1.SJO1, EDGE2.SJO1 and EDGE2.NYC1. Question 1.5 - What is the redundant intra-site capacity for each of the EDGE routers? (disregard WAN) Verify you have reachability to all routers from all routers. OBJECTIVE 2 Design a routing policy that accounts for network relationships of customer, peer, and transit. Consider that any given EDGE router could have any relationship type. Build route policy in and out for each relationship type. Give them a standard name of '{relationship}-in' and '{relationship)-out' Incorporate protection mechanisms and or sanity filtering for your network and the connecting networks as appropriate. Question 2.1 - How would you set things up to reduce costs? What assumptions might you make about the types of relationships as they relate to costs? Question 2.2 - How do you differentiate your received routes by relationship and determine the routes to send to each relationship? Provide a key. Question 2.3 - What sort of policy do you need for a statically routed customer? Question 2.4 - Show relevant route-policy config snips from a cisco EDGE router and a juniper EDGE router for all relationship types. OBJECTIVE 3 Design and configure customer connections per the following drawing and requirements Each customer router is managed by your group. You are resonsible for the configuration and operation. While we are only configuring one or two customers per router in the lab plan for several hundred per edge router. CUST A is statically routed and announcing the IP space (10+X).0.0.0/8 Set a loopback on the customer router of (10+X).0.0.1/32 Question 3.1 - Show relevant config snips from the CUST A router? Question 3.2 - Show relevant config snips from the EDGE router? CUST B is running BGP and is using ASN (20+X) and announcing the IP space (20+X).0.0.0/8. Set a loopback on the customer router of (20+X).0.0.1/32 Question 3.3 - Show relevant config snips from the CUST B router? Question 3.4 - Show relevant config snips from the EDGE router? CUST C is running BGP with you and using ASN (30+X) They are using X.X.0.0/20 of your address space. Set a loopback on the customer router of X.X.0.1/32. Question 3.5 - Show relevant config snips from the CUST C router? Question 3.6 - Show relevant config snips from the EDGE routers? OBJECTIVE 4 Design and configure your peering and transit connections across the Internet Exchange Switch Set up a 'transit' connection across the exchange switch to group X+1 (you are their customer) Question 4.1 - Show relevant config snips from the EDGE router? Set up a 'customer' connection across the exchange switch to group X-1 Question 4.2 - Show relevant config snips from the EDGE router? Set up a 'peering' connection across the exchange switch to all other groups Question 4.3 - Show relevant config snips from the EDGE router? OBJECTIVE 5 Multihomed customers and failures CUST C has disconnect their connection to your EDGE1.NYC1 router and has choosen to establish it with group X+1's EDGE1.NYC1 router. They are still using your IP space. Question 5.1 - What if anything do you need to do for this to work? CUST C wants to send all outbound traffic via the interface to you but receive all inbound traffic via group X+1. Please assist them. Question 5.2 - What changes were required and where? CUST C's link to you has failed. Make sure your network can still reach them. Question 5.3 - What is necessary for this to work correctly? OBJECTIVE 6 Wrap up Question 6.1 - What did you learn from this lab? Question 6.2 - What was the least useful part of this lab? Question 6.3 - What was the most useful part of this lab>