Kieran Milne, Technical Program Manager, Education Services, Juniper Networks

Seamless EVPN-VXLAN Tunnel Stitching for DC and DCI

Ask Me Anything Data Center
Kieran Milne Headshot
Image shows a slide with the headline “Why Seamless EVPN-VXLAN stitching?” A live shot of the host Kieran and guest Michal are pictured in the top right corner. There are two diagrams featured on the slide. The one on the left with a red exclamation point next to it shows a full mesh multi-pod EVPN-VXLAN fabric with fully meshed EVPN-VXLAN tunnels. The one on the right with a green check mark shows seamless multi-pod EVPN-VXLAN fabric with VXLAN to VXLAN stitching and in a text bubble next to this diagram it says, “Easier to add a new DC POD and leaf.”

Get the inside scoop: Juniper data center EVPN-VXLAN features

In this quick vlog, Juniper’s MIchal Styszynski summarizes the EVPN-VXLAN tunnel stitching feature from Juniper. Watch and discover how it offers a method to interconnect pods and sites at their edges that provides improved control and scaling.

Show more

You’ll learn

  • How seamless EVPN-VXLAN tunnel stitching simplifies interconnection for large-scale DC fabric infrastructures 

  • Why seamless multi-pod EVPN-VXLAN fabric is better than full mesh 

  • Use cases for seamless EVPN-VXLAN and key takeaways to keep in mind 

Who is this for?

Network Professionals Business Leaders


Kieran Milne Headshot
Kieran Milne
Technical Program Manager, Education Services, Juniper Networks

Guest speakers

Michal-Styszynski headshot
Michal Styszynski
Senior Product Manager, Juniper Networks


0:00 [Music]

0:03 hi everybody

0:04 i'm kieran milne i'm a product marketing

0:06 manager with juniper networks

0:08 hi everybody i'm michael i am the

0:11 product manager for the qfx's at juniper

0:14 welcome michael thanks for joining us

0:15 now we've got a lot of things going on

0:17 right now with

0:18 new data center evpn vxlan features

0:21 right

0:22 yes exactly we have some cool features

0:24 coming and uh

0:25 some of them are very specific to the

0:27 data center site

0:28 so whenever you're using a vpn vxlan we

0:31 have some additional features coming uh

0:33 in junos 20.4 but we

0:36 wanted to focus also on extending our

0:39 dci

0:40 and multipod capabilities and i would

0:42 like to focus on that part today with

0:44 you

0:45 kieran absolutely so for this vlog take

0:47 us into that interconnection option for

0:50 multipod and dci scenarios when we

0:53 deployed already vpn zx and fabric in

0:55 the lan

0:56 data center we may have a requirement to

0:59 extend

1:00 the l2 between the sites or just simply

1:03 extend the l2 bridge domains

1:05 to the other data center room and in

1:07 that situation

1:08 if our fabric is is growing

1:12 with the number of leafs devices

1:15 at the top of the rack level we may have

1:18 a situation where

1:20 uh in the traditional evp and vxlan

1:22 context

1:23 the number of evp and vxlan tunnels

1:26 starts to grow

1:27 exponentially right so for such

1:30 situations we have a new

1:32 cool feature in junos starting 20.3

1:35 and on qfx 10k 60c

1:39 starting 20.4 where we can stitch vxlan

1:43 tunnels coming from the land data center

1:45 uh to the vxlan tunnels dedicated to the

1:48 interconnect

1:50 the same feature can be also used for

1:53 the multi-pod architectures

1:55 so if we have for example four parts

1:58 instead of enabling a full mesh of vxlan

2:03 tunnels between

2:04 all of the pods within the fabric we

2:06 have a possibility to control

2:08 precisely how the bridge domain

2:11 extensions

2:12 are happening at the interconnect

2:14 gateway level

2:15 with the seamless vpn vxlan stitching we

2:18 can be precise

2:19 in terms of which vni's are going to

2:21 which pod

2:23 and also another cool thing is that we

2:25 can

2:26 identify the given pod with the esi

2:29 value the 10 byte esi value so it means

2:32 whenever you have

2:33 a lot of the mac addresses coming from

2:36 one pod

2:37 or from the other pod they can be

2:39 precisely identified with the

2:41 esi value

2:44 from the control plane point of view

2:47 that's great so you've been talking

2:48 already about these kind of different

2:49 use case options

2:50 show us some visuals or the kind of

2:52 architectural view of these options

2:55 so yes so we mentioned about the two use

2:59 cases

3:00 multipod data center architectures

3:03 between for example smaller rooms

3:05 and bigger rooms within the same

3:07 premises and then the second

3:09 one is the dci so two sides or more than

3:12 two sides

3:13 so it means if you have a lot of these

3:14 devices on each of the side

3:17 that's where the sigma cvp and vxlan

3:19 stitching makes sense right

3:20 but from the design point of view we

3:23 identify

3:24 a couple of design options right so vpn

3:27 vxlan stitching can be enabled not only

3:29 at the spine level

3:30 but you may consider the same

3:32 functionality to be enabled at the

3:34 super spine level in case you you deploy

3:37 a five stage architecture

3:39 or uh at the border leaf level if your

3:41 design

3:42 is an edge routed architecture so fully

3:44 distributed model

3:46 so then the border release are actually

3:48 delivering the stitching

3:50 gateway capabilities that's great

3:53 i want to make sure the viewers are are

3:55 clear on platform support and junos

3:57 release support can you cover that again

4:00 yeah so uh kieran the evp and vxlan

4:03 seamless stitching is coming on the qfx

4:06 10k family

4:07 right so a qfx 10k family with a juniper

4:10 chipset

4:11 with a boosted scaling from the

4:15 mac table point of view from the fib

4:17 point of view

4:18 and then from the junos perspective we

4:21 delivered that

4:22 starting 20.3 but the recommended

4:25 releases for the production deployments

4:27 are

4:27 is the 20.4 r2 which is coming soon also

4:31 uh on our devices excellent so folks can

4:35 get into maybe some pre-production

4:36 testing and trialing with 20.3

4:38 in preparation for the hardened release

4:40 with with 20.4

4:42 absolutely absolutely karen that's great

4:44 all right well it's uh we're running out

4:46 of time here with this vlog so

4:47 what are some key takeaways the key

4:49 points for our watchers to take away

4:52 so first takeaway simplifying the dci

4:56 we didn't want to make it too complex

4:58 right someone is familiar already with

5:00 edp and dx land within the lan then we

5:03 wanted to

5:03 just give the opportunity to extend

5:07 these capabilities between the sites so

5:09 whenever you you

5:10 you are familiar with the lan evpn dx

5:13 lab

5:13 you can easily take the benefit of

5:17 the seamless stitching options second

5:20 thing is that we have

5:21 additional virtualization options with

5:24 the uh

5:25 vni translation using similarity and

5:27 vxlan stitching

5:29 we improve the flooding and the the

5:32 the last important thing is that we just

5:35 boost the scaling of the fabrics

5:38 and the multiple designs right excellent

5:40 thanks for all that michael

5:42 that takes us to the end so a couple of

5:44 key points as we close off

5:45 good summary here of our new vxlan

5:48 stitching feature

5:49 for those who want to get into some more

5:50 detail check out the q1

5:52 2021 master class where we'll be

5:54 covering

5:55 actually uh several of these new data

5:57 center evpn vxlan features

5:59 michael and everybody will dig in more

6:01 detail so if you want more uh

6:02 be sure to check that out and that takes

6:04 us to the end so thanks very much for me

6:08 thank you kieran thanks everybody bye

6:10 everybody we'll talk to you on the next

6:11 one

6:13 [Music]

6:18 bye

6:21 you

Show more