July 2009
Intermediate to advanced
752 pages
23h 19m
English
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Conclusion
EX platforms provide a rich set of IP routing right out of the box, with no “routing-enabled” images or messy software trains to wade through.
Routing is one of those things that is hard to get right. At a small scale, the situation may be forgiving, but history shows that many switch vendors tried to become core class routers—and they have all failed. With the EX, however, you have a reverse case of carrier-class, Internet core-proven IP routing that happens to ship with your Ethernet switch because it’s already in JUNOS. While the EXs have plenty of room to mature and grow into more Layer 2 features, they kind of had Layer 3 covered from day one.
The impressive scaling capabilities of the EX platforms and the common JUNOS image mean that folks familiar with routing in JUNOS software will be able to hit the ground running with an EX under each arm; you may be able to put off buying those router upgrades and just let the EX do it all!
Note that while this chapter provides demonstrations of static and RIP routing, the EX platforms are also capable of full-blown OSPF, BGP, and IS-IS, as well as IPv6 routing using RIPng or OSPF3. Even though IS-IS and BGP currently require an advanced routing license, that’s still less expensive, and likely far more reliable, than adding a standalone router for Layer 3 handling.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.