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Juniper MX Series, 2nd Edition by David Roy, Harry Reynolds, Douglas Richard Hanks

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Chapter 8. Trio Inline Services

This chapter will cover Trio Inline Services and enumerate the different services that are available through the power of Trio. Many Juniper MX customers often ask, “Why is the bulk of the cost in the line cards?” The answer is because all of the awesome is in the line cards! Think about all of the typical services in the line cards from Chapter 1: line-rate forwarding, class of service, access lists, and much more. That’s just the tip of the iceberg. Trio inline services go above and beyond and introduce sampling, network address translation, port mirroring, and tunnel protocols.

What Are Trio Inline Services?

Providing additional networking services on top of routing and switching is critical to the success of any good network architecture. Networking services includes features such as:

  • Sampling information and statistics

  • Network Address Translation (NAT)

  • Port mirroring

  • Generic Routing Encapsulation (GRE) and IP tunneling

  • Logical tunnels

  • Pseudowire interface

  • L2TP LNS/LAC functions

  • PPPoE termination

Historically, routers have required a separate Services Module to provide additional features. One of the key differentiators of the Trio chipset is its ability to integrate network services without the requirement of an additional Services Module. With each new Junos release, it’s possible to add new features such as inline services within the Trio chipset. Some features require additional licenses such as L2TP or PPPoE concentrator ...

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