HSRP and BGP multihoming with Failover (Nice Scenario)
I wish to configure HSRP and BGP multihoming with failover and I request configuration steps from experienced professionals of this forum.
I am also attaching diagram of network.
I wanted to implement HSRP between R2 and R3 in Head office with tracking Serial0. R2 with ISP-A is primary link to reach incoming and outgoing internet traffic and accept traffic from internet destined for Server1 hosted inside network. If Serial0 of R2 to ISP-A gets down or complete R2 failure the outbound traffic should flow from R3 to ISP-B and come back the same route.
We have total of three internet connection. Head office has connection from ISP-A and ISP-B one connection in Disaster Recovery site (DR Site) from ISP-B.
The order to use of these connections are ISP-A is primary link and in the event of serial link failure or router failure (HSRP) the traffic should flow from ISP-B to internet and if both ISP-A and ISP-B is not available (meaning disaster happened) then the traffic from internet to Server1 should flow from ISP-B via DR site.
R2 - ISP-A = Primary link for incoming and outgoing traffic
R3 - ISP-B = Secondary Link for incoming and outgoing traffic
R4 - ISP-B = Tertiary link for incoming and outgoing traffic
Re: HSRP and BGP multihoming with Failover (Nice Scenario)
I believe that the link that Victor posted is quite helpful and will give you good guidance. I would emphasize that if you want ISP A to be primary, ISP B to be secondary, and ISP B - DR to be third, then you need to be careful to configure local-preference on the EBGP sessions so that the IBGP advertisements will clearly have ISP A as the best, ISP B as next, and ISP B - DR as the least.
This document gives several answers on frequently asked questions for PFRv3 channel state behavior.
Q1: What are all the channel operational states from a BR (border role) perspective and what are the rules/conditions to be in each st...
The need was to reach an host inside a LAN through a VPN connection managed by the LAN gateway (Cisco 1921).
The LAN gateway performs NAT and there was a dedicate nat rule for the host i wanted to reach through VPN.
I couldn't connect to the hos...
We have 3 identical switches configured by someone else and would like to claim some of the Gigabit ports(G1/G2/G3/G4) for use on servers. When we try to change the wiring and configuration, we run in to connectivity issues. Attached is a des...