Posts Tagged 'GRE'

November 18, 2014

Your Direct Link into the SoftLayer Cloud

Remember the days when cellular companies charged additional fees for calls placed during peak hours or for text messages that exceeded your plan?

The good news is those days are pretty much over for cellular services thanks to unlimited text and data plans. The bad news is there are cloud and hosting providers who adhere to those same old billing practices of charging customers for every single communication their severs send or receive.

At SoftLayer we do things differently. All of our servers come with included terabytes of outbound bandwidth—5TB for virtual servers and 20TB for bare metal servers. Now you probably just noticed I specifically mentioned outbound bandwidth, and that's because we don't charge anything, nothing, zip, zilch for all traffic inbound to any of our servers, nor do we charge for any bandwidth usage across our Global Private Network.

Imagine the possibilities of what you could build on a Global Private Network that essentially comes free of charge just by being a SoftLayer customer.

  • How about building that true disaster recovery solution that you’re always talking about?
  • How about moving all of your backups offsite now that the necessary bandwidth requirements and costs aren’t standing in your way?
  • Or maybe it’s time to offer your app a little GSLB now that replicating data across remote sites, which hasn’t been feasible over the public Internet due to latency or security concerns, is now feasible?

We help put all these dreams within grasp thanks to Direct Link. Tap directly into our Global Private Network at connection speeds of 1Gbps or 10Gbps to establish a Direct Link into any of our 19 network PoPs (more PoPs are being added regularly). You’ll have the ability to seamlessly extend your private networks directly into SoftLayer. Not only does a Direct Link give you access to one of the world’s largest and fastest private networks, it gives you access to elastically scale your compute and storage on demand.

Many companies look to the cloud as a way to reduce capex and adjust spending on demand but hesitate to move workloads due to latency or security concerns. I'd like to say that latency isn’t even worth thinking twice about at SoftLayer. But don't take my word for it; take a peek at our Looking Glass, and see for yourself. In regards to security, a SoftLayer Direct Link enables you to build and deliver secure services on our private network without having to expose your servers to the public Internet.

For more information on Direct Link and connectivity check out KnowledgeLayer or this blog where the author digs into the technical details and explains how enterprise customers benefit from Direct Link with GRE Tunnels.

Thanks,
JD Wells

Categories: 
October 14, 2014

Enterprise Customers See Benefits of Direct Link with GRE Tunnels

We’ve had an overwhelming response to our Direct Link product launch over the past few months and with good reason. Customers can cross connect into the SoftLayer global private network with a direct link in any of our 22 points of presence (POPs) providing fast, secure, and unmetered access to their SoftLayer infrastructure from their remote data center locations.

Many of our enterprise customers who’ve set up a Direct Link want to balance the simplicity of a layer three cross connection with their sophisticated routing and access control list (ACL) requirements. To achieve this balance, many are using GRE tunnels from their on-premises routers to their SoftLayer Vyatta Gateway Appliance.

In previous blogs about Vyatta Gateway Appliance, we’ve described some typical use cases as well as highlighted the differences between the Vyatta OS and the Vyatta Appliance. So we’ll focus specifically on using GRE tunnels here.

What is GRE?
Generic Routing Encapsulation (GRE) is a protocol for packet encapsulation to facilitate routing other protocols over IP networks (RFC 2784). Customers typically create two endpoints for the tunnel; one on their remote router and the other on their Vyatta Gateway Appliance at SoftLayer.
How does GRE work?
GRE encapsulates a payload, an inner packet that needs to be delivered to a destination network, within an outer IP packet. Between two GRE endpoints all routers will look at the outer IP packet and forward it towards the endpoint where the inner packet is parsed and routed to the ultimate destination.
Why use GRE tunnels?
If a customer has multiple subnets at SoftLayer that need routing to, these would need multiple tunnels to each if they were not encapsulating with GRE. Since GRE encapsulates traffic within an outer packet, customers are able to route other protocols within the tunnel and route multiple subnets without multiple tunnels. A GRE endpoint on Vyatta will parse the packets and route them, eliminating that challenge.

Many of our enterprise customers have complex rules governing what servers and networks can communicate with each other. They typically build ACLs on their routers to enforce those rules. Having a GRE endpoint on a Vyatta Gateway Appliance allows customers to route and manage internal packets based on specific rules so that security models stay intact.

GRE tunnels can allow customers to keep their networking scheme; meaning customers can add IP addresses to their SoftLayer servers and directly access them eliminating any routing problems that could occur.

And, because GRE tunnels can run inside a VPN tunnel, customers can put the GRE inside of an IPSec tunnel to make it more secure.

Learn More on KnowledgeLayer

If you are considering Direct Link to achieve fast and unmetered access with the help of GRE tunnels and Vyatta Gateway Appliance but need more information, the SoftLayer KnowledgeLayer is continually updated with new information and best practices. Be sure to check out the entire section devoted to the Vyatta Gateway Appliance.

- Seth

Categories: 
Subscribe to GRE