Irene Zhang, Director, Product Marketing, Juniper Networks

Why Deep Buffer Matters for Next-Gen Metro Networks?

Ask Me Anything Cloud Metro
Irene Zhang Headshot
Peter Chung, Sr. Manager, Product Management, Juniper Networks, standing in front of a screen, gesturing while speaking. Text on the right says "Ask Me Anything. Why Deep Buffer matters for next-gen metro networks?"

Why deep buffer matters.

Latency is crucial for Juniper’s vision to drive the next-gen Cloud Metro and provide a common framework to support multiple types of architecture. Check out this video from the Juniper Cloud Metro AMA series, where our experts answer your questions related to next-gen Cloud Metro network.

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You’ll learn

  • How Virtual Output Queue (VOQ) provides both power density and great latency

  • How to optimize VOQ while supporting a variation of topologies

  • How microburst absorption can help to manage traffic flow

Who is this for?

Network Professionals Security Professionals


Irene Zhang Headshot
Irene Zhang
Director, Product Marketing, Juniper Networks

Guest speakers

Peter Chung Headshot
Peter Chung
Sr. Manager, Product Management, Juniper Networks



00:04 Welcome to Juniper Cloud Metro AMA series, where we have

00:07 experts to answer your questions, any questions related

00:11 to next-gen Metro networks. I'm your host today, Irene Zhang,

00:15 Director of Product Marketing at Juniper Networks. Joining me

00:18 today is Peter Chung, senior product manager at Juniper.

00:22 Peter, welcome. Today we have a question about why deep buffer

00:27 matters for next-gen metro networks?

00:30 Yeah, that's a great question that most of you frequently ask.

00:33 So, why we need a deep buffer for our next generation of the

00:37 metro networks. Our foundation of the building block is try to

00:41 provide very common framework. So, basically, this common

00:46 framework will give you the very flexibility to provide a

00:49 different variation for the topology, you can have a ring,

00:53 you can have a hub-spoke or leaf-and-spine architecture.

00:57 So our vision to drive the Next-Gen Cloud Metro. Latency is

01:01 very important.

01:02 So we picked the merchant silicon based on the VOQ

01:06 architecture called Virtual Output Queue. which give you the

01:11 great benefit for the optimization from the silicon to

01:15 keep your power density, but in the meantime, we'll provide you

01:19 great latency.

01:20 So, how to balance between the VOQ performance capacity and the

01:26 able to support variation of topology. So, keep in mind, our

01:32 Cloud Metro not just support for the traditional Metro topology,

01:36 but also to support 5G.

01:38 So, you can picture your scenario, your 5G network have

01:42 the very low speed application, but try to limit your new Metro

01:46 100GE or even for 400GE up speed uplink. So now the deep buffer

01:56 is very important.

01:58 Thanks to the silicon evolution, the latest generation chipset

02:03 gives you the delicate on chip resource, and more importantly,

02:06 is to offer you up to 8G HBM to memory.

02:11 So, those kinds of new enhancement for the silicon and

02:15 overall density of the memory will be increased. So basically

02:20 with this kind of big powerful mechanism, we can guarantee end

02:23 to end of transmission. More importantly, how to handle a

02:27 symmetric of traffic flow, you can do the micro-burst

02:30 absorption.

02:31 Our ACX, the latest generation of the metro product family is

02:36 based on the most advanced version of the silicon

02:39 technology. It gives you the 8G buffer for here.

02:43 This is our checkpoint for support the very first step to

02:47 support the Cloud Metro. Thank you.

02:52 What else do you want to learn about the next generation Metro

02:54 networks? Send us your question by email at

03:00 and join us at our monthly live AMA session. You can find the

03:04 date and registration link at the description box below. See

03:09 you next time.

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