Monthly Archives: September 2017

MPLS lsp path broken

Posted on September 24, 2017 by Mrityunjay Singh

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.

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MPLS Vpn Working Principle

Posted on September 19, 2017 by Mrityunjay Singh

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 … Continue reading →

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Multicast Overview

Posted on September 13, 2017 by Mrityunjay Singh
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BGP Weight Attribute

Posted on September 11, 2017 by Mrityunjay Singh

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 … Continue reading →

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BGP Initialization

Posted on September 10, 2017 by Mrityunjay Singh

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.

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BGP Over GRE

Posted on September 10, 2017 by Mrityunjay Singh

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 … Continue reading →

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