Solved

OSPF failover implementation

Posted on 2012-04-10
1
762 Views
Last Modified: 2012-06-21
I have two WAN links and I'd like to implement failover primary and secondary connection with OSPF. Any tutorials or recommendations? Thx
0
Comment
Question by:biggynet
1 Comment
 
LVL 17

Accepted Solution

by:
pergr earned 500 total points
ID: 37831474
The only thing you need to do is to configure your metric on the two links, and OSPF will chose the one with the lowest metric as primary, and failover to the other link when the primary is down.

In case your primary link has a higher bandwidth, then this will be automatic - even without manually configuring the metric.

If it is high speed links, you may want to configure your "reference bandwidth" under OSPF. By default this is just 100 Mbps, which is not very useful these days. Better set it to 100 Gbps.

Then the metric for each link is automatically calculated as 100Gbps divided by the bandwdith for each link.

...and Bob's your uncle.
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Cisco Router 1841 internal memory 2 53
cisco nexus experiance 2 58
Network Packet Analyzer Solar Winds 3 75
OSPF Cost 2 51
Creating an OSPF network that automatically (dynamically) reroutes network traffic over other connections to prevent network downtime.
PRTG Network Monitor lets you monitor your bandwidth usage, so you know who is using up your bandwidth, and what they're using it for.
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…

895 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now