I have a test lab that I support that is a flat network that consists of a couple hubs, 2 Cisco 3500XL switches and a PIX 515 firewall. The issue is that everything will work fine for 10-15 minutes and then IP communication between hosts will cease. I was able to pinpoint the issue, just not the cause. In the switch that has the host in question directly connected I checked the arp table.
The table when everything is working is as follows (other extries removed):
Internet 192.168.3.1 10 0002.b35f.da1f ARPA VLAN1
Internet 192,168.3.166 4 OOla.646d.3ece ARPA VLAN1
when not working the arp table is this (other extries removed):
Internet 192.168.3.1 3 0002.b35f.da1f ARPA VLAN1
Internet 192,168.3.166 3 0002.b35f.da1f ARPA VLAN1
192.168.3.1 is the default gateway for the subnet and is the PIX firewall. 192.168.3.166 is a win2k server.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
Im studying the 100-105 book by Odom and am currently on the topic of Port security. I purchased a used 2960 and I'm trying to follow a...
While deploying a number of 18xx/2802/3802 model access points (APs), which run AP-COS as their operating platform. It can be observed on some occasions that while many of their access points were able to join the fabric WLC withou...
I am going to design and build an LAN network under a tunnel underground with long distance between the switches.
I will have 2 Catalyst switches and 8 Industrial IE3000, and they will be connected with fiber.
For now I am planning on use Layer-2 s...