In the following diagram we have a very Basic MPLS network to demonstrate how MPLS Layer 3 VPNs work. In the Service Provider cloud we are running OSPF between R3,R1,R5, and R6. R3 and R6 are running BGP within the SP and are peering with each other, though NOT directly connected.
Our customer routers [...]
MPLS Study Notes Terminology
Penultimate Hop Popping
Multiprotcol Transport diff payloads -Ethernet, FRLY, ATM,IPv4, IPv6
Layer 3 MPLS VPN (RFC2547) will be the focus of the 4.0 R&S Exam.
Labels used to route(switch)traffic instead of normal IPv4/IPv5 route. Similar to how FRLY DLCI or ATM VPI/VCI works…. Labels are [...]
Building your own CCIE Lab Rack can be a daunting task if you’re not sure how to get started. Hopefully this will provide you a blueprint of what you will need and how to set up correctly so you can spend more time doing Labs and less time trying to figure out how to build [...]
TCL shell is available on Cisco IOS release 12.3(2)T and later. So, you can run this on your routers but NOT on your switches. This is a great tool, especially during Lab/simulation. You will want to verify connectivity on your Lab network constantly.
So open up Notepad and copy/paste the ip address of every device/interface [...]
If you are planning to build your own CCIE Lab rack, consider making your own network cables. Making your own network cables is a good way to save money if you need to make a lot of them. At $7 for a 3ft patch cable, you can spend quite a bit of money if you [...]