Power is money. So, saving power is important. The capacity of the line cards and the PICs/MICs are also constantly going up. This means that the overall power consumption of the newly built HW components are also increasing. Hence, building power efficient internet routers and HW components without compromising the scale, performance or functionality becomes important. This is what triggered me to create this blog summarizing the JUNOS support to handle this.
In a nutshell, JUNOS provides the following support to optimize the power usage on MX platforms that include MX240/480/960 and MX2K. Some of these functionalities are supported on other platforms as well. Indeed, all these functionalities can be can be adopted by the other platforms.
- Ambient temperature configuration
- MIC aware power management
- Deterministic FRU power ON sequence
In Part-1 of this Blog, we discussed the problems that network operators face and looked at the value proposition of Junos Continuity. In the concluding part of this blog, we will look at architectural changes that were needed to make Junos Continuity model as simple and straightforward as possible.Read more...
Traditionally, the line cards are built with a built-in PIC or a modular MIC. This is the case with Juniper and all the competitors. Due to this, several line cards or PICs/MICs are built to offer different port speeds (Example: 24x10GE MIC, 2x40GE MIC, 4x100GE MIC etc.).
Port density, port speed and line card density are constantly growing in the line card design. Interestingly, high capacity internet routers are also built on a continuous basis with increased number of line card slots. These routers can be either monolithic or in the form of a cluster. Needless to say, this is true for Juniper and our competitors.
Careful planning and provisioning needs to be done to configure these high capacity routers and bring in live traffic to serve the world. One of the challenges is identifying a particular port in a line card on a chassis with multiple line card slots. This is a key factor since appropriate cabling needs to be done for every port.
As of now, the highest capacity MX series router is MX2020 which supports 20 line card slots. The highest port density is 96 10GE ports per line card (MPC8 or MPC9). Assuming a fully populated chassis, this would mean a total of 1920 10GE ports per chassis.
Multiple ports in a line card are distributed to different PICs/MICs. In addition to this, the port LEDs in a line card’s face plate are not necessarily arranged in a specific order. All these things bring in challenges in spotting a particular port for proper cabling and debugging the issues.
Though this is a common thing, it became important to address this issue which motivated me to create this blog.
JUNOS solves this issue by implementing port LED blinking. A bunch of RE CLI commands are added to blink the LED(s) for a particular port or a set of ports. It can be done at any time on a live router without any traffic or service interruption.
This is currently implemented on MX platforms for the Trio MPCs. The implementation of this is a SW only solution and so it can be easily adopted for use in other line cards and platforms.Read more...
As appetite for bandwidth grows at an incredible pace, operators are forced into fierce competition with each other to win customers. To meet this surging demand, operators are constantly increasing their network capacity, and vendors such as Juniper must roll out faster and denser line cards.Read more...