Juniper MX Series: A Comprehensive Guide to Trio by Douglas Richard Hanks Jr., Harry Reynolds

By Douglas Richard Hanks Jr., Harry Reynolds

Realize why routers within the Juniper MX sequence, with their complicated function units and checklist breaking scale, are so well known between businesses and community provider services. This authoritative ebook indicates you step by step tips to enforce high-density, high-speed Layer 2 and Layer three Ethernet prone, utilizing Router Engine DDoS safety, Multi-chassis LAG, Inline NAT, IPFIX / J-Flow, and lots of different Juniper MX good points. Written via Juniper community engineers, every one bankruptcy covers a particular Juniper MX vertical and comprises evaluation inquiries to assist you attempt what you examine.

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It’s possible to put additional load on the Junos kernel while accounting is turned on. It isn’t recommended to run this command on a production network unless instructed by JTAC. After your debugging is finished, don’t forget to turn it back off with set task accounting off. Don’t forget to turn off accounting. {master} dhanks@R1-RE0> set task accounting off Task accounting disabled. Device Control Daemon The device control daemon (dcd) is responsible for configuring interfaces based on the current configuration and available hardware.

The MPC line cards use the Trio chipset and are where Juniper is focusing all new features and services. Modular Port Concentrator The MPC line cards are the second generation of line cards for the MX. There are two significant changes when moving from the DPC to MPC: chipset and modularity. All MPCs are now using the Trio chipset to support more scale, bandwidth, and services. The other big change is that now the line cards are modular using MICs. Figure 1-21. High-level architecture of MPCs and MICs The MPC can be thought of as a type of intelligent shell or carrier for MICs.

The following daemons take center stage and are required for the operation of Junos. • • • • Management daemon (mgd) Routing protocol daemon (rpd) Device control daemon (dcd) Chassis daemon (chassisd) There are many more daemons for tasks such as NTP, VRRP, DHCP, and other technologies, but they play a smaller and more specific role in the software architecture. info Management Daemon The Junos User Interface (UI) keeps everything in a centralized database. This allows Junos to handle data in interesting ways and open the door to advanced features such as configuration rollback, apply groups, and activating and deactivating entire portions of the configuration.

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