SDWAN Failover and Bandwidth Aggregation Explained

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⏱️ Timestamps ⏱️
00:00 SD WAN and WAN Failover
01:59 Dual WAN Setup
06:14 Dual WAN with SDWAN
11:10 Multipath TCP Linux & OpenMPTCProuter
#SDWAN

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8 июл 2024

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Комментарии : 90

@eddieguinn2445 2 года назад

Thank you for all the information and steady content!

@GeorgeG472 2 года назад

I’ve been trying to figure out this dual WAN thing in my lab for a couple days. I’m glad I revisited this video.

@joshsmith4998 2 года назад

Thanks for the explanation! Always love watching and learning from your vids.

@brandoncurrell1465 2 года назад

Hi Tom. I work for a company in the UK that develops SD-WAN software and provides it as a managed service. This is the first video I’ve seen that nails the architecture, benefits and pitfalls so far. I was especially surprised you mentioned out of order packets, which is an issue we’re developing a fix for in our software stack right now. However, just to note, in our experience, VoIP doesn’t seem too affected by OOO packets, at least over here. Our maximum latency differences are less than 100ms 99% of the time, so I wonder if that has something to do with it, but I think VoIP has some sort of re-ordering built into it already. Our main issue has been with SMB file transfers, which basically covers samba on Linux, or any network share on Windows. We also noticed issues on files served over HTTP/S by a Windows web server. We confirmed it was caused by OOO packets when we loaded our dev software for testing and managed to improve a Windows based HTTP download from ~30Mbps up to the full ~200Mbps we had available.

@LAWRENCESYSTEMS 2 года назад

Thanks and that's interesting.

@LAWRENCESYSTEMS 2 года назад

@asdrubale bisanzio it does use UDP but in regards to the fail over the call still drops when there is not a SDWAN solution because of the NAT ports initiated for the call have to be recreated on the other interface.

@pepeshopping 2 года назад

@asdrubale bisanzio Finally, somebody that does know.

@bw_merlin 2 года назад

Great video, I had no idea SDWAN had both an onsite and offsite/hosted component, learnt something new.

@nathanielswanson5730 10 месяцев назад

Thanks for your videos! I'm currently working on implementing flexiWAN which is an opensource SD WAN solution.

@greggcollins1821 2 года назад

Great explanation and illustrations.

@aandecomputers1 Год назад

Awesome work and great explanation 👍 thank you.

@saibot293 2 года назад

Good work. More videos like this please.

@manslayerdbzgt 2 года назад

Way to go Lawrence you rock

@berndeckenfels 2 года назад

Tom :)

@Harry_Bl44346 2 года назад

great explanation!

@JonMajorCCIE47884 2 года назад

Just want to take a moment here to say, I run Speedify VPN directly on my VyOS router at home. It seamlessly allows me to aggregate 2x DSL connections and a 4G modem. If a line fails, I don't even notice it, when all lines are active individual flows see the agg. bandwidth (i.e. If I'm downloading/uploading, I'm getting the full bandwidth of all 3 circuits combined). Rock. Solid.

@devinself2104 Год назад

But does Netflix still work or is the traffic flagged as coming from a VPN?

@JonMajorCCIE47884 Год назад

@@devinself2104 they having streaming bypass to help with that, so Netflix doesn't go over the tunnel. It worked fine enough

@ChrisNicholson Год назад

@@JonMajorCCIE47884 blocked access to several sites thou. Charles Schwab, JC Penney, and other misc. Have to have the bypass button ready or add domains in the CLI.

@JonMajorCCIE47884 Год назад

@@ChrisNicholson they do have a cli domain bypass I thought? But you're totally right, while it has its benefits, it needs a fair bit of tweaking lol.

@ChrisNicholson Год назад

@@JonMajorCCIE47884 I purchased the dedicated server option to try to avoid this sort of thing. Too bad it geolocates to Canada and breaks even more stuff. Found a public Server in Jersey that "more things work" on it rather than the paid for dedicated server.

@JzL Год назад

Excelent explanation

@IamKhoramdin 2 года назад

Thank you

@bleeb1347 7 месяцев назад

You can do perfect load balancing with Silverpeak as long as you are smart enough to deploy BGP or OSPF in your network. You’re never going to get true load balancing with static routing. We do BGP on the WAN interfaces to L3 switch stack interfaces, and do OSPF on the LAN interfaces from the L3 switch stack to the Silverpeaks. It would make more sense if I drew it for you, but it’s pretty simple. We’re POCing a SASE solution to replace SSL-VPN, SDWAN and Zscaler right now, and most SASE solutions give you much better aggregation and load balancing, without having to think about app control based egress or just failover.

@RobbyPedrica 2 года назад

Link aggregation and failover are sub parts of sdwan but a solution with aggr and failover is not necessarily an sdwan solution. Sdwan incorporates a lot more than just aggr and failover eg. Underlay/overlay, application steering, link quality monitoring, session persistence, etc. What you discuss here is oversimplified and more akin to simple aggr and failover.

@FaithMediaChannel Год назад

Thanks again

@allynonderdonk7577 2 года назад

I'm not heavily into the pros and cons of the subject, but I have used Pfsense and Carp to great effect. It does much the same as what your were talking about.

@AIONizandoCR 2 года назад

But pfsense can't keep the sessions when the public IP address changes, and that will happen, if you have two different internet connections

@allynonderdonk7577 2 года назад

@@AIONizandoCR True. Typically other than a voice call most would establish a new session quickly enough. In the age of high availability internet connections who wouldn't just call back. The first thing a business does is usually get a call back number. The person on the other end of the phone wouldn't know who hung up the call. It might happen to 1in 10000 or 1 in 100000 calls for large businesses. Though Carp routers are essentially sdwan type appliances which will route information between multiple available servers at multiple locations. Honestly I don't know enough to say if carp would kill a session or not. It just works for me, never had an unrecoverable issue. Basically never had a problem at all. Pfsync manages the sessions and for me hasn't dropped the ball. Basically it can seamlessly route the traffic flow to a new firewall no problem. So well I don't know if it hasn't worked in actual practice.

@allynonderdonk7577 2 года назад

@asdrubale bisanzio No I don't think it does true bonding at all. It is basically failover, but pfsync does a really good job of maintaining connections. In multi wan configurations it does a really good job on a pfsense router.

@mrhacker99999 2 года назад

FlexiWAN

@AfifAhmad 2 года назад

Can you please do a video on BGP?

@Viettzz 2 года назад

Nice video man! So where can I order the SDWAN device? and how much is it?

@viscopaul18 2 года назад

Just wondering if you could do a review of entry level tp link tl-r605 failover or aggregation(if supported). Cheers mate!

@shubinternet 2 года назад

I would also like to see a comparison of Speedify versus Peplink versus Silverpeak versus ZeroTier versus other SDWAN solutions you know that integrate with the firewall software you're familiar with.

@LAWRENCESYSTEMS 2 года назад

I won't have time to do that anytime soon.

@shubinternet 2 года назад

@@LAWRENCESYSTEMS dang. Because that is the type of comparison that seems to be missing in the industry. 😔

@kylelaker539 10 месяцев назад

Now i know why wireguard can't fail over seamlessly but untunneled devices does failover. Edit: I have to do full restart or router and manage switch just to make it work on wireguard when wan1 got a packetloss.

@ravneillal 2 года назад

Hi, Im using a TP-Link TL-R470T for over 5 years now to wan bond connections at my home. I have 2 dsl and 2 lte services. I get combined speeds of all 4 connections at any given time, if a isp connection drops i dont notice it at all. Everything is seamless. I just had to create a policy in the router to instruct source ip's to go over all the wan ports and thats all. Im not using any VPS either free or paid to have this. This router supports WAN bonding natively out of the box.

@LAWRENCESYSTEMS 2 года назад

Load balancing and bonding are not the same thing.

@joeltyler3427 2 года назад

There is Oneweb satellite and others. As well starlink.

@agbefii8453 2 года назад

speedfusion from peplink

@thegrizzlytech3416 2 года назад

What product are you using for the visio like presentation?

@LAWRENCESYSTEMS 2 года назад

Diagrams.net ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-P3ieXjI7ZSk.html

@chrismeyers2575 2 года назад

@@LAWRENCESYSTEMS How do you make your connecting lines move?

@RyanPetty 2 года назад

Would be great to see an explanation of how to do this with UniFi.

@wizdude 2 года назад

It would be awesome to see this natively supported on the edgerouter. It has been discussed on the forums but there is nothing included as part of the default distribution that permits this. I’m trying not to make the edgerouters I deploy too non-standard. Perhaps if you are interested in this too you could join the Ubiquiti forums and upvote or comment on some of the posts about this.

@Max6711 2 года назад

Hi, what are your thoughts on the OpenSource FlexiWAN? I think they are from Israel.

@MrHector6711 Год назад

Hey there what program did you use for creating the diagram?

@LAWRENCESYSTEMS Год назад

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-mpF1i9sfEJ0.html

@oussamakarem5744 2 года назад

hello, please can you tell me the name of software used to draw diagram of network architecture, tanks.

@LeGoog2008 2 года назад

Sorry wrong link: www.diagrams.net/

@oussamakarem5744 2 года назад

thank you ❤️

@LAWRENCESYSTEMS 2 года назад

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-P3ieXjI7ZSk.html

@oussamakarem5744 2 года назад

@@LAWRENCESYSTEMS thank you 😇✌️

@berndeckenfels 2 года назад

Sd-wan means use overprovisioning IP to replace MPLS? ,) Maybe one das we get proper MPTCP devices then we can skip the Proxies and service providers.

@wizdude 2 года назад

I have customers that have replaced their MPLS services with dual commodity internet providers as part of their private WAN solution. Some of them have been using the Citrix SD-WAN solution. It works really well. I’d be keen to see a really well designed open source solution that provides the same level of functionality.

@Skipp28TN 9 месяцев назад

Let me help here. Using voice or video. Use per packet. Not using per session might work. Have a data center need in bound there is 1 to consider.

@dannythomas7902 2 года назад

I'm having real problems with pfsense wireguard maybe it need updates

@chucksw1 2 года назад

My employer has decided to use SilverPeak SDWAN for our remote offices...

@Ballebek01 2 года назад

Excellent choice. Designed quite some SDWAN solutions in the past years and SilverPeak is still my favorite.

@thatLion01 2 года назад

Does this require special setup on the isp side?

@LAWRENCESYSTEMS 2 года назад

Nope, they are just transporting the data to the VPS server of the SDWAN solution.

@thatLion01 2 года назад

@@LAWRENCESYSTEMS do you recommend any good sdwan provider?

@lolololowbx280 2 года назад

Netmaker and wiretrustee please

@wizdude 2 года назад

These both look like awesome projects, but they both look like mesh network solutions and I can’t see if either of them support multiple WAN connections. Perhaps I am wrong and can’t find it in the documentation. Do you know if either of these projects support multiple WAN connections?

@AlupMare 2 года назад

How about BGP between ISP?

@LAWRENCESYSTEMS 2 года назад

BGP is a completely different topic.

@fooey88 2 года назад

How are you able to use the exact same WAN IP between 2 different ISPs?

@LAWRENCESYSTEMS 2 года назад

That is a feature and SDWAN service can provide

@ArthursHD 2 года назад

Wouldn't it increase latency?

@LAWRENCESYSTEMS 2 года назад

Yes, but very very slightly.

@ChrisNicholson Год назад

@@LAWRENCESYSTEMS kind of depends on the VPS.

@monamoralisch264 2 года назад

plz shave nxt time ;) :)

@pepeshopping 2 года назад

You CANNOT aggregate bandwidth with multiple uplinks!!! Need to go back and learn how TCP flows work, but in a few words, you can send 2 different streams/flows through the 2 uplinks, but just like LAGG, one stream/flow can only travel one path, not both! Zerotier makes it clear: Traffic distribution and balancing can either be PACKET or FLOW based, where ONLY packet based protocols can be multiplexed among multiple uplinks (i.e. UDP, which is NOT used for most communications). And Nah. If you are gonna go and have to use a VPS, you may as well do it yourself and not rely on their servers? (using VPN and NAT can work around overlapped network addresses easily). Doing this for a customer so they can have any 2 local ISPs but their VPN connectivity to their app provider is done in a VPS host and that way business continuity is assured.

@LAWRENCESYSTEMS 2 года назад

You CAN aggregate bandwidth with multiple uplinks when using a SDWAN solution that supports it.🙂

@ChrisNicholson Год назад

@@LAWRENCESYSTEMS like Speedify. So long as the server you need to connect to, doesn't ban you for using a VPN.