Has anyone done SD-WAN across the pond?

We have an MPLS network, but because of geography some sites are only 1.5Mb from AT&T. Our UK site is around 6MB. We are looking at alternatives and we are looking to possibly move away from AT&T AVPN network to something with more bandwidth at each location.

Resources/Advice For Beginner

Hi everyone,

I'm a software engineer working at a telecom company and I lack a lot of basic knowledge about the networking side of my job. I've been able to get by alright so far, but I feel that I am handicapped by this lack of knowledge.

Does anyone have any suggestions for a book where I could get a good overview of all of the networking concepts/topics/protocols/etc.? When some of my coworkers begin talking about PE to CE over BGP I get a little lost. There is so much to learn and I don't even know where to start. Any help is greatly appreciated!

Thanks in advance

EDIT: Thank you for all of your suggestions! My company gives me access to many learning resources (online courses) so I was planning on completing CompTIA Network+, ICND1, and ICND2 in that order. Does this make sense?

Cisco Live 2018 - Orlando - Hotel Recommendations

Sorry for the shit post in this forum.
Just wondering if anyone familiar with the Orlando area could comment on the most convenient hotel(s) in regards to accessibility to the Orange County Convention Center.
Registered and I have the hotel list of course, just wanted to pick the brains.
Not staying at the Hilton based on price, and I guess the OCCC hotel rooms are not part of the Live event for some reason.

Google searches trigger the "Our systems have detected unusual traffic from your computer network. This page checks to see if it's really you sending the requests, and not a robot." on Google. What should I be looking for in my logs to track down what is causing this?

Its happened a few times and happens for multiple users. What is the best way to tell if there is something making automated searches on my network?

Scanners not working across VLANs/Juniper?

So this is a weird one. This client has a Juniper infrastructure, EX2200s and EX4300 core. They also have a bunch of Toshiba e-Studio MFPs. They will not scan to SMB shares in different subnets.

MTU is a thought we are looking into, but wondering if anyone else has come across anything like this. Don't work with Junipers outside of this client so could be something I'm not aware of.

Thanks much for any input!

ipv6 subnetting "this ipv6 address exists in the subnet of the outside interface" any idea how to proceed? - enterprise serverrack

Configuring the asa 5506-x through the ASDM, trying to attach a /64 to my "inside" interface.

My config is as follows (example ip's):

outside interface: 3002:6c2:9405::/48 Gateway: 3002:6c2:9405::1

Static route from any6 to 3002:6c2:9405::1 and i can ping ipv6.google.com from the asa itself.

When trying to add the following subnet to my inside interface: 3002:6c2:9405:1103::/64 i get the error "this ipv6 address exists in the subnet of the outside interface"

I tried a lot of different combinations, i even tried to attatch a /52 to my outside interface instead, but then i cant ping anything ipv6 from the asa.

I'm kinda stuck here and i'm convinced i just overlooked something easy, could you guys push me in the right direction?

Internet issue around 10:35 UTC?

We lost reachability to many ISP around that time... Even Google was not reachable.

Have you noticed something? Looks like it did not affected our ISPs directly, but someone beyond them.

Accessing storage at different locations

I have a requirement where we need to connect two Data center rooms together via an ISL link between two Cisco MDS switches. The rooms may be more than 100m apart. Compute devices in one room will be accessing storage in the same room (directly connected to the MDS switch) and will also need to access storage (connected off the adjacent MDS) in the other room. Will this be an issue when the compute accesses storage in the same room compared to accessing in the other room? From experience how much latency would traffic going 1 hop and over an ISL link actually account for? Would the difference in access speed cause problems? Are there any studies I can refer to when designing access across inter-room storage, in particular when compute devices are accessing storage at different locations?

Cisco Ingress policing best practice for flow-fairness?

I'm looking into turning on Flow -Fairness based WFQ on the egress side to "automagically" deprioritize large file transfers in favor of smaller traffic (RTP, small www, etc). without having to do any specific marking or classification. As I understand it, this is closest thing to fq_codel/ sqm in the Cisco World.

Of course as I understand it, unlike fq_codel/IFB which creates a simulated inbound queue, WFQ is egress only which means ingress will be a regular FIFO queue with no attempt to use flow-fairness to determine what traffic gets dropped first.

An inbound policer is, as I've been told a best- effort, mostly TCP drop strategy. If I set a policer to 85mbit, is there anything I can do on Cisco firewalls to select what kinds of traffic will be dropped on purpose (versus traffic that might be dropped by accident, when the policer is overwhelemed by un-cooperative traffic).

Explained another way: Egress will use "Flow-based WFQ" with a 85mbit limit (no Classes for now). I assume there's no WFQ on ingress, even in a best effort capacity. Can I specify a class of traffic on ingress that will never be dropped on purpose? Can I do it by packet size? (e.g. never drop packets of size less than x)

Line speed is 100/100 Fiber.

Bonus: If no one says "there is no QoS on the internet", or "you cannot control packets once they have reached your interface" I give everyone on r/networking 1BTC.

What is the reasoning for preferring clients with high data rates? I've stumbled upon this just a handful of times and can't firmly grasp the concept.

Per Aerohive Doc - Explains their implementation,

rate-preference-weight | Set a preference for forwarding traffic to and from wireless clients that are capable of fast data transfer rates. (Default: high) none Set no preference for clients with a fast data rate moderate Set a moderate preference for clients with a fast data rate high Set a high preference for clients with a fast data rate 

So let me ask /r/networking, what is the reasoning for preferring clients with high data rates? I can see both sides - What is the general rule of thumb in design?

Cheers! edit: Format.