Blog Archives

BGP has a new friend – BGP-Based SDN

-+*The Software Defined Networking (SDN) framework has a large and varied context. Multiple components may or may not be used, OpenFlow being one of them. Some evolving SDN use cases leverage the capabilities of the OpenFlow protocol while others do not

Posted in CCIE R&S

BGP

-+*  Sourced from: http://www2.ensc.sfu.ca/

Posted in CCIE R&S

BGP – BGP as-override vs allow-as-in

-+*These two functions are pretty similar, just with subtle differences. They can be used in an environment where a customer is using one AS number for many sites that are connected to an ISP. This is shown in the example

Posted in CCIE R&S

BGP – Local Preference

-+*The BGP Local Preference attribute or local-pref is used to influence the outbound routing decision of  a router running BGP. The local preference has to be set in bound on routes being received to influence the outbound routing behaviour. A

Posted in CCIE R&S

MPLS & VPN – CONFIGURING THE CUSTOMER SIDE OF AN MPLS VPN WAN, PART 2

-+*This article looks at the other two scenarios. We’ll also talk briefly about IP multicast in these settings. DUAL-CARRIER L3 MPLS VPN WAN With dual carriers, life is actually a good bit simpler — unless you go out of your

Posted in CCIE R&S

MPLS & VPN – CONFIGURING THE CUSTOMER SIDE OF AN MPLS VPN WAN, PART 1

-+*CONFIGURING THE CUSTOMER SIDE OF AN MPLS VPN WAN, PART 1 I’ve recently been doing a lot of consulting work involving variations on a common theme. The general theme is how do I configure my routers to work with the MPLS

Posted in CCIE R&S

MPLS & VPN

-+*In this lab I’m going to go over the config for an MPLS VPN. The network has been configured with OSPF 100 for the client, and OSPF 200 for the ISP backbone and basic reachability has been confirmed within each

Posted in CCIE R&S

MPLS & VPN – Creating an MPLS VPN

-+*Today we’re going to look at the configuration required to create a basic MPLS VPN servicing two customers, each with a presence at two physical sites. Our lab topology looks like this: As a review, recall that P (provider) routers

Posted in CCIE R&S

Multicast – All you need to know for the CCIE R&S lab

-+*We all know how much information is on the internet about multicast and believe me my intension is not to create another post about multicast just so it’s there and is not different from what you can find on the internet

Posted in CCIE R&S

Multicast – Auto-RP over NBMA Design Issues

-+*This video covers the advanced design issues with running Multicast and Auto-RP over NBMA networks such as Frame-Relay Hub-and-Spoke.  Specifically this video focuses on possible solutions such as sparse-dense mode, sparse-mode with auto-rp listener, sparse-mode with a default RP placement,

Posted in CCIE R&S