Configuring DMVPN (Dynamic Multipoint Virtual Private Network) with BGP (Border Gateway Protocol) involves setting up a scalable and secure VPN solution for connecting multiple sites. Here’s a basic guide on how to configure DMVPN with BGP:
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Month: November 2023
bookmark_borderIPSEC/GRE VPN Tunnel and OSPF Configuration
Configuring an IPsec GRE (Generic Routing Encapsulation) VPN tunnel with OSPF (Open Shortest Path First) involves several steps. In this example, we’ll configure a basic IPsec GRE VPN tunnel between two routers and enable OSPF routing over the tunnel. For this example, we’ll assume Router A and Router B are the two endpoints of the VPN tunnel.
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bookmark_borderCisco Catalyst 9500 StackWise Virtual Configuration
StackWise Virtual (StackWise-V) is a stacking technology used in Cisco Catalyst 9500 Series switches that allows you to virtualize multiple physical switches into a single logical switch. This provides simplified management and enhanced resiliency. Here is a basic guide on how to configure StackWise Virtual on Cisco Catalyst 9500 switches:
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bookmark_borderHow to Configure OSPF Route Redistribution
Route redistribution in OSPF (Open Shortest Path First) allows routes learned from one routing protocol to be advertised and used in another routing protocol. Redistribution can be useful in scenarios where multiple routing protocols are used within an enterprise network. Here’s a basic guide on how to configure route redistribution in OSPF:
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bookmark_borderHow to configure OSPF with BGP on top
Configuring OSPF (Open Shortest Path First) with BGP (Border Gateway Protocol) on top is a common practice in large-scale networks where OSPF is used for intra-domain routing and BGP is used for inter-domain routing. This approach is often referred to as “OSPF as the IGP (Interior Gateway Protocol) and BGP as the EGP (Exterior Gateway Protocol).” Here’s a basic guide on how you can configure OSPF and BGP coexistence:
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bookmark_borderHow to configure BGP AS Prepending
BGP AS (Autonomous System) prepending is a technique used to influence the inbound traffic by making a particular Autonomous System path less attractive. This is achieved by adding the AS number multiple times to the AS path attribute of BGP updates sent to a neighbor. The idea is to make the AS path longer, and therefore less preferred, in order to influence incoming traffic.
Here’s a general guide on how to configure BGP AS prepending:
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bookmark_borderCisco Catalyst 9800-CL Wireless Controller HA SSO Configuration Guide
A while back I was assigned to work on a project which requires, among other things, to deploy wireless in 4 offices.
I decided to interconnect the office in a hub and spoke fashion. For wireless I decided to use Cisco 9130AXI Wireless Access Points and a Cisco Catalyst 9800-CL Wireless Controller.
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