@online{ slideshare:vtpchap4,
    author = "Hector Camba Lainez",
    title = "Cap4 implementing vtp",
    year = "2010",
    url = {\url{https://www.slideshare.net/lucky0679/cap4-implementing-vtp}},
    note = "[Online; accessed 22-May-2017]"
}

@misc{ web:SP_Tiers,
    author = "Orhan Ergun",
    title = "{Tier 1,Tier 2 and Tier 3 Service Providers - Tier and BGP Peering} --- Orhanergun.net",
    year = "2017",
    howpublished = {\url{https://orhanergun.net/2017/01/tier-1-tier-2-tier-3-service-providers/}},
    note = "[Online; accessed 17-June-2017]"
}

@misc{ Differen15:online,
    author = {\url{http://www.differencebetween.com/author/root/}{Andrew}},
    title = "Difference Between EBGP and IBGP",
    howpublished = {\url{http://www.differencebetween.com/difference-between-ebgp-and-vs-ibgp/}},
    month = "September",
    year = "2011",
    note = "[Online; accessed on 24-June-2017]"
}