{"id":18146,"date":"2015-03-19T11:50:24","date_gmt":"2015-03-19T06:20:24","guid":{"rendered":"http:\/\/www.tothenew.com\/blog\/?p=18146"},"modified":"2015-03-19T13:14:28","modified_gmt":"2015-03-19T07:44:28","slug":"vpc-peering-in-aws-cloud","status":"publish","type":"post","link":"https:\/\/www.tothenew.com\/blog\/vpc-peering-in-aws-cloud\/","title":{"rendered":"VPC Peering In AWS Cloud"},"content":{"rendered":"

So what is AWS VPC Peering ?<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

A VPC peering connection is basically a networking connection between two VPCs that enables you to route traffic between them using private IP addresses.<\/p>\n

Basics of VPC Peering<\/b><\/span><\/span><\/span><\/span><\/p>\n

So what does it take to make a VPC peering connection ?\u00a0Firstly the owner of the requester VPC sends a request to the owner of the VPC-II with which he wants to make the VPC peering connection. VPC peering connection is made at the CIDR block level, so you need to be clear about what CIDR is.<\/span><\/span><\/span><\/p>\n

After the request is accepted peering connection is made and AWS gives you a Peering Connection ID in for of “pcx12345678”.<\/span><\/span><\/span><\/p>\n

Then what you need to do is simply update the routing tables at VPC level & security groups at instance level according to your use.<\/span><\/span><\/span><\/p>\n

 <\/p>\n

\"vpc1\"<\/a><\/p>\n

 <\/p>\n

A Simple Scenario<\/b><\/span><\/span><\/span><\/span><\/strong><\/span><\/span><\/span><\/p>\n

In this scenario, you have two or more VPCs that you want to peer to enable full sharing of resources between.<\/span><\/span><\/span><\/p>\n

Here are the VPCs that I have created in my account.<\/span><\/span><\/span><\/p>\n

\"vpc2\"<\/a><\/p>\n

 <\/p>\n

\"Blog<\/p>\n

Subnets associated with each VPC.<\/span><\/span><\/span><\/p>\n

\"vpc3\"<\/a><\/p>\n

Note<\/b><\/span>:-<\/b> There is no need of any NAT instance<\/strong> here as VPC-Peering states that instances in different VPCs can communicate with each other by their private IP addresses as if they are in same VPC.<\/span><\/span><\/span><\/p>\n

You need to have one instance in public subnet of VPC-I and one in private subnet of VPC-II<\/span><\/span><\/span><\/p>\n

Now, create a\u00a0<\/span><\/span><\/span>VPC-Peering<\/b><\/span><\/span><\/span>\u00a0<\/span><\/span><\/span>connection<\/b><\/span><\/span><\/span><\/strong>\u00a0.You will find \u201cPeering connections\u201d option in VPC console.<\/span><\/span><\/span><\/p>\n

After clicking on\u00a0<\/span><\/span><\/span>Peering connections<\/b><\/span><\/span><\/span><\/strong>, Go to \u201cCreate VPC Peering Connection\u201d<\/span><\/span><\/span><\/p>\n

Make a peering connection between VPC-I (VPC to Peer ) to VPC-II(VPC to peer with) . If you are making an\u00a0<\/span><\/span><\/span>inter-account VPC peering connection<\/b><\/span><\/span><\/span><\/strong>\u00a0then select the option \u201cAnother account\u201d in peer with option .Then it will ask for the Account ID and VPC ID.<\/span><\/span><\/span><\/p>\n

Then click the \u201cCreate\u201d button and a request will be sent to the VPC-II.<\/span><\/span><\/span>
\n\"vpc6\"<\/a><\/p>\n

A request will appear like this in your AWS\u00a0console.<\/span><\/span><\/span><\/p>\n

\"vpc7\"<\/a><\/p>\n

Accept the Peering Connection.<\/span><\/span><\/span><\/p>\n

\"vpc8\"<\/a>After accepting request the VPC-Peering connection will be active which will look like this.<\/p>\n

\"vpc9\"<\/a><\/p>\n

Updating the <\/span><\/span><\/span>routing tables<\/span><\/span><\/span><\/strong> for each VPC.\u00a0In VPC 1’s route table add CIDR block of VPC-II in destination option of new line and in target option choose the VPC-Peering connection ID(pcx-5a46ba33) & vice-versa.
\n<\/span><\/span><\/span>
\n\"vpc10\"<\/a>\u00a0(pcx-54a46ba33 is the VPC peering connection ID which i got when peering connection was made)<\/p>\n

Save the settings<\/b>.<\/span><\/span><\/span><\/p>\n

Now, all the configurations<\/strong> have been made. <\/strong>Your instances now can be connected inter-VPC by their private IPs.\u00a0The architecture will be :-<\/strong><\/span><\/span><\/span><\/p>\n

\"Untitled<\/a><\/p>\n

Finally, you can check whether you can login into your private instance in VPC-II directly by your private instance in VPC-I.<\/span><\/span><\/span><\/p>\n

Note<\/b><\/span><\/span><\/span><\/span><\/strong>:-\u00a0<\/b><\/span><\/span><\/span>Keep your Credentials with you ( .Pem Files ) for login.<\/span><\/span><\/span><\/p>\n

Now, you will be able to login to your private servers in different VPCs. So\u00a0<\/span><\/span><\/span>VPC-Peering<\/b><\/span><\/span><\/span><\/strong>\u00a0is<\/span><\/span><\/span>\u00a0<\/span><\/span><\/span><\/strong>successfully<\/span><\/span><\/span>\u00a0<\/span><\/span><\/span><\/strong>implemented.<\/span><\/span><\/span><\/p>\n

*<\/span><\/span><\/span>\u00a0<\/span><\/span><\/span><\/strong>I would like to thank my colleague Tarun Saxena without whom this post would not have been possible.<\/b><\/span><\/span><\/span><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

So what is AWS VPC Peering ? A VPC peering connection is basically a networking connection between two VPCs that enables you to route traffic between them using private IP addresses. Basics of VPC Peering So what does it take to make a VPC peering connection ?\u00a0Firstly the owner of the requester VPC sends a […]<\/p>\n","protected":false},"author":174,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":2,"footnotes":""},"categories":[1174],"tags":[248,1692,1693],"class_list":["post-18146","post","type-post","status-publish","format-standard","hentry","category-aws-2","tag-aws","tag-vpc","tag-vpc-peering"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t