Cisco CCIE – Router Switch Blog

Cisco Announced CCIE R&S Version 5

Posted on December 24, 2013 by RouterSwitch Tech | 0 Comments

Cisco announced the much awaited update for CCIE Routing and Switching from version 4 to version 5. It’s a good move as CCIE R & S version 5 is there since pretty long time. The official launch for the version…

Understanding Different Router Numbers

Posted on February 1, 2013 by RouterSwitch Tech | 0 Comments

Many of the routing protocols implemented in Cisco’s IOS require a number to follow the command that enables the routing protocol in question. For example: “router eigrp 1,” “router bgp 1” or “router ospf 1”. If you’re new to routing,…

Cisco ASA 8.4 vs. Typical NAT/PAT Configuration

Posted on August 25, 2012 by RouterSwitch Tech | 0 Comments

In computer networking, network address translation (NAT) is the process of modifying IP address information in IP packet headers while in transit across a traffic routing device. Here we will focus on NAT and PAT, as well as the related…

Configure Private VLANs on Cisco 3560 Switches

Posted on August 16, 2012 by RouterSwitch Tech | 0 Comments

The private-VLAN feature addresses two problems that service providers face when using VLANs: 1. Scalability: The switch supports up to 1005 active VLANs. If a service provider assigns one VLAN per customer, this limits the numbers of customers that the…

How to Configure IPSEC Encryption with the Cisco IOS?

Posted on July 27, 2012 by RouterSwitch Tech | 0 Comments

How to Configure IPSEC Encryption with the Cisco IOS (site to site VPN tunneling)? The OSPF dynamic routing protocol is probably the most popular LAN routing protocol today. OSPF can scale to the largest LANs but can also start out…