SD-WAN in Cisco devices

[wfqk]

Hi Anyone can tell what Cisco device can be used for SD-WAN? And explain how SD-WAN increase WAN speed? 

Thank you so much. 

[Francesco Molino · Accepted solution]

Hi

Here the release note for Cisco iWAN that indicates all routers compatible with this solution:

https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Intelligent_WAN/release/notes/iwanrn-2-2-1.html

Just to make sure we use the good words :-) iWAN is the ability to use multiple WAN links based on link congestion, QoS (AVC), PFR and WAAS.

Based on your business needs, traffic for specific applications with specific needs will be always forwarded to the "best"link.

This is what we call "intelligent" routing because as explained, we will forward traffic on 1 or other link depending on status link matching traffic criteria.

Hope this is clear?

[wfqk]

Thanks for your reply.

So, based on the link you sent here, can we say ASR1000 can be used for SD-WAN feature? but companies like to use Riverbed. Maybe that is their preference, right? 

[Francesco Molino]

Yes ASR1000 series will be ok as soon as you use the exact model given on official iWAN release note shared before.
Companies like to use Riverbed --> What do you mean by that? For SD-WAN or/and WAN acceleration?

Personally, Lot of customers are moving to Cisco iWAN solution, some with Viptela. For sure there're other vendors but I'm not implementing other solutions.

Thanks

[wfqk]

"Companies like to use Riverbed --> What do you mean by that? For SD-WAN or/and WAN acceleration?" -- yes

Customs topology is like this:

Internet(isp) ------ (client)asr1000---Riverbed---Lan

So, if we add IWAN module to the ASR1K, the ASR can replace the Riverbed, right? if so, ASR1K function would be affected, do you think so? 

[Francesco Molino · Accepted solution]

You don't need any module, it's a config stuff.
But yes, configuring ASR in iWAN mode you'll be able to remove your Riverbed. If you want to do wan acceleration, then you will need Cisco WAAS licensing.

[wfqk]

Thank you!

[Francesco Molino]

you're welcome

[Karsten Iwen · Accepted solution]

And as a little addition to Francescos answer: There are also the Cisco Meraki MX appliances that support SD-WAN. Just be aware that SD-WAN is not a standard-protocol, you can't expect that one solution can operate with another.

[wfqk]

" you can't expect that one solution can operate with another. "

Can you explain this? Thanks

[David Klebanov]

Cisco SD-WAN based on Viptela technology is Cisco's offering in the SD-WAN space. It is currently available on:

1. Physical vEdge appliance (100Mb-20Gb throughput)

2. vEdge Cloud (virtual appliance) for virtual branch deployment using either Cisco branded x86 servers called ENCS or any other x86 (ESXi, KVM)

3. vEdge Cloud for public cloud deployment on AWS or Azure

The fourth option coming shortly is the ability to run Cisco SD-WAN on ISR1K, ISR4K, ASR1K and CSR. This will allow deploying Cisco SD-WAN by simply upgrading the code to IOS-XE image supporting SD-WAN feature-set. 

Hope this helps.

David

@DavidKlebanov

[inderdeeps]

SD-WAN is a software defined Wide Area Network which works on the SDN terminology. Simply says that An SD-WAN simplifies the management and operation of a WAN by decoupling (separating) the networking hardware from its control mechanism.

Below is the link which shows the comparison between various SD-WAN solution 

http://www.routexp.com/2018/07/various-sd-wan-vendors-and-their-basic.html

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