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OSPF Configuration Example 3 : DR BDR election
Configuring OSPF DR and BDR with Interface Priority and Router ID In all shared networks like Ethernet, Frame Relay, and ATM, OSPF selects one router as the DR and another as the BDR. The DR reduces the number of adjacencies in these networks, preventing the flow of duplicate LSAs. You can check our other tutorial…
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Understanding OSPF DR BDR Election
Table of Contents What is a Designated Router or DR? What is a Backup Designated Router or BDR? DR BDR Election Process Why does OSPF elect the BDR before the DR? What is a DR Other? What happens after the election? How BDR will know DR is alive? OSPF Network types and DR BDR election…
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OSPF Configuration Example 1: Adjacency Formation Between Two Cisco Routers
Table of Contents OSPF Configuration Example 1: Adjacency Formation Between Two Cisco Routers Configuration Procedure About OSPF Configuration Why use loopback interfaces? OSPF Configuration Commands Adjacency Verification Understanding the “show” commands OSPF Configuration Example 1: Adjacency Formation Between Two Cisco Routers In previous chapters, you learned key OSPF concepts like DR-BDR election and redistribution. In…
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BGP Configuration Example 2: EBGP Using Loopback Interfaces
BGP Configuration Example In the last tutorial “BGP configuration example : EBGP Peering“, we configured an EBGP peering between two routers using their physical interface IP addresses. In this BGP configuration example, we’ll use loopback interfaces for BGP peering. We prefer loopback interfaces when there are multiple paths between peers because they provide more stability…
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BGP Configuration Example 1: EBGP Peering
BGP Configuration Example: In the previous chapter, you learned about BGP’s peering process and states. In this BGP configuration example , you will learn how to configure BGP with two Cisco routers, check the BGP peering status, and understand different BGP show commands. We’ll provide step-by-step instructions to set up an EBGP peering, verify the…