VPLS EVPN MAC Learning Traditional Ethernet based data plane flood-and-learn mechanism (Flooding of broadcast, unknow unicast and Multicast traffic) to disseminate MAC-Address information contained within customer sites between PE routers within a MPLS domain. EVPN uses an MP-BGP based control plane to disseminate mac-address information contained within […]
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Problem with LFA : The most common citied topology is the ring topology when it comes to illustrating LFA coverage. If a failure happens at the link between R1-R2 then it cannot sent it to R3 as a FRR backup for R1-R2 as R3 will send the traffic […]
Introduction : The primary objective for Segment routing is Source routing : The Ability of the node to specify a unicast forwarding path, other than the normal shortest path that a particular packet will traverse. Source Routing means an edge node, it can be a server, a top […]
Dynamic IPSec on SeGW and static IPSec at remote device (Cisco and Nokia) Configure ISA configure system name “SeGW-01” chassis-mode d exit isa tunnel-group 1 isa-scale-mode tunnel-limit-2k create ipsec-responder-only multi-active mda 1/2 no shutdown exit exit […]
Option C eliminates the requirement to hold all the VPRN on the ASBR. A Multihop eBGP session between the PE routers can be configured. In Option B, all direct knowledge of the remote AS is contained and limited to the ASBR. The Inter AS Option C is to eliminate […]
Inter-AS connectivity is required to interconnect two customers attached to different service providers. In that case, service providers need to exchange the VPRN routing information with each other so that end-to-end connectivity can be formed. There are three variations to do so and are known as Inter-AS models. […]