The Journey of a Network Engineer:

vpn

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August 18, 2013  12:15 AM

How to configure Cisco DMVPN? Part-1



Posted by: Sulaiman Syed
ARP, Cisco, Configure, DMVPN, how, mGRE, route, Tunnel, vpn

Configuring Site-to-Site VPN although straight forward, but it fails to scale. just imagine how many tunnels should be created to connected to 10 sites, specially if...

August 7, 2013  12:19 AM

Configuring Cisco GRE over Site to site VPN



Posted by: Sulaiman Syed
access-list, Cisco, end-to-end, GRE, ios, ipsec, route-map, router, vpn

Previously we have seen how the site to site VPN works. in this example, I would use the topology below to configure Site to Site VPN. Then we would create a GRE Tunnel and secure it with the IPsec tunnel, called GRE over IPSec. thus providing routing protocols the ability to transverse the sites...


July 22, 2013  11:17 PM

How Cisco Site-to-Site IPsec VPN Works?



Posted by: Sulaiman Syed
Cisco, Firewall, vpn

Branch connectivity to the HQ or the Datacenter is one of the essential topics that almost all businesses have to deal with. Various methods has been developed to connect Branches. All these methods fall under the WAN connectivity module. Wan connectivity can be achieved using:


May 28, 2012  2:44 AM

How to use Administrative distance? – part 1



Posted by: Sulaiman Syed
AD, administrative, CCIE, Cisco, distance, EIGRP, MPLS, router, vpn

I'll admit, the title is slightly misleading. I will not elaborate on how to use AD for the routing benefit in general. What i would do is, explain a scenario. Then manipulate AD to have the desired routing outcome. In first entry, i would just show the scenario, while the configurations and...


February 21, 2012  2:38 PM

How to use route-target?



Posted by: Sulaiman Syed
CCIE, Cisco, MPLS, route-map, router, vpn

The main purpose of route targets is to provide connectivity between different  MPLS-VPN  networks. For example, there are three enterprises namely A, B, and C. A and B are major networks with their own MPLS-VPN.  Enterprise A requires to access some servers and resources from Enterprise C. The...


October 17, 2011  12:32 AM

Loopback address and MPLS-VPN!



Posted by: Sulaiman Syed
Configure, EIGRP, GNS3, how, ios, MPLS, RIP, router, switch, to, vpn

In this article, i will not go deeply into the issue of configuring MPLS-VPN. The steps were mentioned very clearly in an earlier post. MPLS-VPN Tutorial...


February 10, 2011  4:44 AM

MPLS VPN tutorial



Posted by: Sulaiman Syed
Cisco, configuration, Dynamips, example, GNS3, MPLS, mpls vpn, tutorial, vpn

I would like to post a simple example of how to set up MPLS-VPN for two users. This example was used from the Cisco Press book CCIE Routing and Switching . Although the book...


February 9, 2011  8:16 AM

what is MPLS VPN?



Posted by: Sulaiman Syed
Cisco, how mpls vpn works, MPLS, mpls vpn, network, router, routing, service provider, virtual, virtual routing, vpn

When a service provider connects to sites that belong to one customer that uses private address then SP will advertise those routes within his autonomous systems. This could be handled when he is serving one ogranization. What if the SP is connecting 10 customers each with three sites and all of...


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