OSPF Packet level reading The concept of a consistent database is a core requirement for link-state protocols and allows the protocols to ensure a loop-free topology. Since no loops exist, each router then makes consistent forwarding decisions for user data packets. Ensuring the proper advertisement of link-state updates […]
Saby has more than 9 years of Experience in Networking field. His level of commitment and passion towards technology has developed him as an Expert in his field. He has written various blogs and is also a Cisco Live Speaker for NG Multicast.
Inter AS Option B MP eBGP/VPNv4/VPNv6 eBGP Between ASBRs The ASBR are the provider edge devices for communicating routes over the inter-as links between the service provider networks. ASBRs have eBGP VPNv4/VPNv6 sessions between them. ASBR does not have to maintain VRF tables. Disable the RT filtering check […]
This post will take a look at the two new LSA types in OSPFv3 using a Cisco router with a simple DR <-> BDR on a FastEthernet segment directly connected in area 1. Cisco with the Cisco as DR and then Cisco to Cisco with the Cisco as DR […]
IP FRR provides similar fast recovery methods in LDP based networks, but a lot simpler to implement from a complexity perspective. LFA is similar to MPLS FRR i.e. it pre-installs the backup next-hop into the forwarding plane. LFA’s doesn’t introduce any protocol extensions and can be implemented on a […]
Today, we are going to discuss in depth about the Native Multicast flow. Below mentioend are the details, which is covered in this section. 1) What will happen when Receiver is active. 2) What will happen when Source is active. 3) What will happen when Register receive at RP. […]
ISIS OSPF LSA/TLV TLV shares common Headers Different LSA for different routes. PPP Different control protocol negotiate IPCP negotiate between the peers. ICPC being negotiate for the IP traffic and OSICP being negotiate for the ISIS traffic. Interface Type P2P, Broadcast, Unnumbered Broadcast P2P, Broadcast, P2MP, NBMA Datastructure […]