Topology:
Objective: To test the broken LSP failover using LDP protocol.
All router in the topology are running under OSPF area 0.LDP has been enabled between them. Currently LDP synced and LDP neighbor ship has been established between all routers.
MPLS Vpn Working Principle
Topology:
Objective:
Configure MPLS L3VPN and understand it’s working. Currently PE1 & PE2 running iBGP under AS 100.PE1, P1, P2 & PE2 running OSPF as IGP. MPLS backbone running LDP for label distribution, LDP neighbor ship has been established among PE1, P1,P2 and PE2.CE1/CE11 using default routing towards PE1/PE2 respectively.
MPLS VPN used two control plane protocols: LDP and MP-BGP to accomplish MPLS VPN communication.
LDP used for signaling and responsible for distributing label among LSR, however LDP rely on IGP for choosing the best path.MPLS unicast ip forwarding is purely based on IGP and LDP.
Multicast Overview
BGP Weight Attribute
Topology
Objectives
Use BGP attribute to influence the route selection in BGP. Currently Router R1/R1 running iBGP .Between R1-R3 & R2-R4 ebgp is used. Within ISP we have used Full iBGP mesh ( of course we could have used RR).Connect the network as shown in topology.
BGP Initialization
Topology
Objectives
Objective is to understand how bgp initialize when you enable interfaces and bgp parameters. We will check it by sniffing tool Wireshark to know what happening behind the scene. Wireshark will be enabled on f0/0 on R2.
BGP Over GRE
Topology
Objective:
To implement BGP over GRE , the topology shown above. In topology R1 & R3 running BGP 100 whereas R2 running only IGP.R1-R4 & R3-R5 running ebgp and advertising prefix 4.4.4.4 and 5.5.5.5 respectively.
R1-R2-R3 running ospf under area 0.
Bgp over GRE can be configured in scenario where end to end BGP is not running or where we want to bypass non bgp peer to peering with BGP peer.