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Showing posts from 2011


Ok now the fun stuff start, MPLS VPN’s, I have created nice topology with ISP “” and two customers that have connected their branches in NY and Tel Aviv, “” a small company and “” an innovative company working Native IPv6.Now this time I would go in a different approach instead of talking and talking (I mean writing and writing) I will give you all configurations and .net file I did and let you play around.MPLS VPN Topology configuration + .netSome pointers:1) You can divide the topology into 2 main sections Provider and Customer and 3 virtual divisions (explained below):a) Provider Back Bone, relatively simple configuration P router are set only with IGP (OSPF flat area 0)
b) PE’s are the complex part, holding both the Customer Interconnecting protocol Provider Topology and doing the conversion between them.
c) Customer Edge again simple configuration 2) ttl propagation in the configuration files I have provided you I have left the default behavior of …

IPV6 NAT-PT Dynamic

IPv6 NAT-PT is one of the methods out there for migration between V4 to V6, the NAT-PT is not a normal NAT as with normal NAT you would translate one address to another, in our case NAT-PT we do a translation between 2 different protocols ipv6 to ipv4 (and vice versa).In the above scenario I have done a simple topology R1 is a host running only IPv6, R2 is my translator between IPv6 to IPv4 and R3 is my gateway out side (Only IPv4), on R3 as you can see from above I have connected it to my home network so I have done Normal IPv4 NAT between the what is coming in from f0/0 and going out f0/1 (my home net)R1R2R3! interface FastEthernet0/0 no ip address duplex auto speed auto ipv6 address 2001:100:100::1/64 ipv6 address FE80::1 link-local ! interface FastEthernet0/1 no ip address shutdown duplex auto speed auto ! ! ! ip http server no ip http secure-server ! ipv6 route ::/0 2001:100:100::2 ! ! ! ! ! ipv6 unicast-routing ! ! interface FastEthernet0/0 no ip address duplex auto …


In this article I would like to demonstrate the BGP free core power , the simplicity for the ISP as well as for the customer need to have site to site connectivity with out him creating vpns or doing any complex configuration.R1_VRF_CCIER2_VRF_CCIER2_VRF_CCDER1_VRF_CCDER1_VRF_CCIE#sh run Building configuration... Current configuration : 641 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R1_VRF_CCIE ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback0 ip address ! interface FastEthernet0/0 ip address duplex auto speed auto ! router rip version 2 network no auto-summary