Routing Design for Large Campus Networks

I am Xia Jie, a lecturer at 51CTO Academy. On the occasion of the 51CTO Academy's "4.20 IT Charging Festival" (April 19-20), I would like to share with you my experience in selecting campus network products.

1. Campus network internal routing design

Internal routing generally uses OSPF, the core area uses area 0, and the remaining areas use corresponding area numbers, as shown in the following figure.

2. Campus network egress routing design

There may be multiple operators at the network exit, such as China Telecom, China Unicom, and China Mobile. The more mainstream demand is that users access China Telecom servers through China Telecom links and access China Unicom servers through China Unicom links. How to achieve this demand? Static routing + default routing, or policy routing

The idea of ​​implementing static + default routes is shown in the figure above. Write out all the telecom network segments. You may write hundreds of static routes, which is definitely limited. (For detailed telecom network segments, search Baidu) Let the next hop to the telecom network segment point to telecom, and other default routes point to China Unicom. (You can also let the address to China Unicom server point to China Unicom exit, and other default routes point to telecom)

The implementation methods of policy routing are basically the same. Please refer to the course PPT or video tutorial for details.

***Implementation method: Now mainstream routers or gateway devices all support intelligent routing functions. They can conduct comprehensive evaluations based on the built-in address library (the same as the implementation method mentioned above), link utilization, latency, jitter, etc., and finally select the appropriate exit to access the Internet.

51CTO Academy 4.20 IT Charging Festival

(On the 19th and 20th, 100 video courses are free to grab, and members can enjoy a 40% discount on video courses, non-members can enjoy a 30% discount, and packages can enjoy an additional 20% discount, and micro-jobs can enjoy a huge discount of 2,000 yuan)

Activity link: http://edu..com/activity/lists/id-47.html?wenzhang

Related video tutorials:

Large Campus Network Practical Design Video Course (Routing Switching + Wireless Network + Security + Optimization)

http://edu..com/course/course_id-6986.html