Introducing new Nokia 7250 IXR platforms

Introducing new Nokia 7250 IXR platforms


My name is Alp Dibirdi. I am the Software Product Manager for the 7250 IXR portfolio within ION IP Routing Division in Nokia. Today I am going to talk about the 7250 IXR-10 and IXR-6, the new additions to the 7250 IXR portfolio. The 7250 IXR-10 has eight line card slots, IMM slots, with two CPM control cards. It is leveraging the traditional Nokia high availability infrastructure where we keep the TCP packets in sync between the active and the redundant control plane to ensure the highest availability and nonstop routing. It also has six power supply slots plus six redundant ones when fully loaded to support feature evolution. But as well, the chassis is designed from the ground up with the card pitch with the depth to accommodate feature evolution of the forwarding chips. For the 7250 IXR product family we built chassis from the ground up to ensure scalability and future-proofing the solution. If we focus on the IXR-10 as an example, it has an abundance of power supply options. First of all, it supports mix-and-match AC and DC power supplies and they are all modular. The fully loaded chassis is to take six power supplies and we have six more slots for redundancy. We can offer six plus six for full redundancy, maybe having an AC input and a DC input having a redundant source of power supply. Or we can have six plus one redundancy in case of accommodating a failure. The same applies for the switch fabric. The switch fabric is not visible; it’s at the back right behind the fans. And there’s enough switching capacity to accommodate 3.6 Tb/s on a per-line-card basis. One other key attribute of the 7250 is each and every IMM touches each and every switch fabric; each and every switch fabric touches each and every IMM line card. It gives the full mix-and-match capability. It gives the ultimate flexibility when it comes to accommodating the feature evolution of the 7250 product line. The 7250 IXR makes use of the SR OS operating system, which gives us not only a rich feature set, but as well, interoperability capabilities together with Symmetric Multiprocessing (SMP). Nokia SMP is well ahead of the curve, such that each and every process, like BGP, is broken down into smaller processes and is run on different multicore CPUs. The 7250 IXR-10, much like the IXR-6, has 3.6 Tb/s capable line card slots. The first two line cards that are coming up with the first release are 36-port QSFP28 100GE, which also supports break-out and 10GE, 40GE and 25GE optic options together with 50GE optics permitting. Plus an all-in-one starter configuration: 48-port 10/1 GE SFP+/SFP and 2-port QSFP28 100GE, which again supports the break-out option. Each and every card is equipped with the maximum buffers possible. At the end of the day, the box will be able to do the heavy lifting, will be able to absorb the burst to its maximum. Each and every forwarding chip is accompanied with 8 GB of external memory for burst absorption capabilities for the worst case scenario. But as well, each and every one of these ports are MACsec capable. Security is becoming a paramount concern to various operators, whether it’s a data center, backhaul, or mobile backhaul customer. And the box is designed from the ground up to ensure the most secure transport options that are available, while making no compromise in the throughput. One other big capability feature of the 7250 is the synchronization. It supports SyncE plus 1588 both for frequency and phase on each and every one of the Ethernet ports in the eight slots of the IXR-10. The other addition to the 7250 IXR family of products is the IXR-6. The IXR-6 shares the same IMMs, the line cards and the control and processing module with the IXR-10. It also has 3.6 Tb/s slots but it also shares the same operating system binary. So the capabilities that you would find throughout the IXR family of products would be identical. One other thing I would like to mention is the traffic management capabilities. The IXR is the first product that supports hierarchical policing at ingress. That gives us the ability to not only absorb the burst, but also police it in multiple different tiers, not limited to per-forwarding class, but more at a high level, at a crude level on a per-customer basis. The IXR also with the IXR-R6 is going to be the first product that supports Hierarchical QoS, multi-tier scheduling capability in the merchant silicon product line. Last but not least, it’s also worth mentioning the advanced synchronization capabilities we talk about: the SyncE and 1588 for both frequency and phase is tied up to the OAM. The OAM timestamping for delay and jitter measurements is going to leverage the stringent timestamping abilities such that we will have microsecond accurate OAM measurement capabilities throughout the 7250 IXR product family.

3 thoughts on “Introducing new Nokia 7250 IXR platforms

  1. V nice

  2. This has nothing to do with the Nokia 7250, as in the phone released in 2003!!!

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