Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium


Ospf Latency

Posted on 2007-10-09
Medium Priority
Last Modified: 2008-01-09
Please Read carefully only detailed answers.

We have three companies in a hub and spoke topology the main site has a router and the other two sites have routers that connect to the main site.  The type of routers are the Netvanta 1224str and the protocol we are using is Ospf with a bandwidth of 54mbs.  My problem is first of all when i do ping test to any of the other sites after about 30 pings at 1ms it spikes up to about 310ms and times out every once in a while then goes back to normal what could be wrong.  My second question is if my link can only transmit at 54mbs should i set my interface at 54mbs instead of leaving it at 100mbs.
Question by:NolanDorsett
  • 2
LVL 22

Accepted Solution

Reid Palmeira earned 2000 total points
ID: 20069920
couple of things to check.

1. ping tests aren't necessarily the most reliable. run a traceroute from the Adtran 1224STR and see exactly what node is bottlenecking your connection. it's doubtful that this is related to the OSPF routing. Could just be that one of the other routers is getting an update and is delaying the ping response while it handles that data. iperf is also a good test here to check your real throughput, run it from points at each of the three sites for a long period of time and see what kind of performance you get. This is far more reliable than a simple ping test. Ping is good for connectivity testing but not as a performance testing tool.

2. as far as the interface speeds. What kind of WAN connectivity do you have between each site? 54 Mbps sounds like a good deal of bandwidth and I don't think the NV1224STR has any WAN interfaces bigger than a dual T1. They don't even have a DS3 card for it and that's less than a 52 meg pipe.

Author Comment

ID: 20081261
Where using ethernet interfaces that connect to the wireless radios from the adtran router

Author Comment

ID: 20081314
The adtran 1224str has ethernet interfaces these can handle 54mpbs

Featured Post

Configuration Guide and Best Practices

Read the guide to learn how to orchestrate Data ONTAP, create application-consistent backups and enable fast recovery from NetApp storage snapshots. Version 9.5 also contains performance and scalability enhancements to meet the needs of the largest enterprise environments.

Question has a verified solution.

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

This article is a collection of issues that people face from time to time and possible solutions to those issues. I hope you enjoy reading it.
This article is in regards to the Cisco QSFP-4SFP10G-CU1M cables, which are designed to uplink/downlink 40GB ports to 10GB SFP ports. I recently experienced this and found very little configuration documentation on how these are supposed to be confi…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
If you're a developer or IT admin, you’re probably tasked with managing multiple websites, servers, applications, and levels of security on a daily basis. While this can be extremely time consuming, it can also be frustrating when systems aren't wor…

578 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