Switching

Cisco cable-diagnostics with TDR

René Jorissen on August 26, 2013 0 Comments • Tags: #cable-diagnostics #cisco #domain #reflector #tdr #time

Some Cisco switches have a way to check the condition of copper cables. This can be done via de command test cable-diagnostics tdr. TDR stands for Time Domain Reflector. More information about Time Domain Reflector can be found at the Cisco Support Community. The command can be very useful for basic layer 1 troubleshooting. core01#test … Read More

Configuration Example, Management

CactiEZ – configuration basics

René Jorissen on December 19, 2011 0 Comments • Tags: #cacti #netconfig #networking #ntp #sync #time

Every time I install CactiEZ or Cacti on another platform, I am searching for the commands to basically install the most common parameters, like static IP addressing, NTP sync and time zones. Several times I thought about writing a simple article with the necessary commands and final I had time to create it. Networking netconfig … Read More

Management

Cacti Plugin Management and RealTime Plugin

René Jorissen on October 27, 2008 0 Comments • Tags: #21 #architecture #cacti #enable #management #pasql #plugin #real #real-time #time

I played a little with Cacti today and installed the Plugin Architecture 2.1. While reading some forums a lot of people are talking about the Plugin Management functionality. I looked and searched in my complete Cacti installation, checked all the configurations which can be made, but I couldn’t find anything about Plugin Management. After some … Read More

Configuration Example

Telnet Time-Out is killing me….

René Jorissen on October 22, 2008 0 Comments • Tags: #connection #ip #out #synwait #synwait-time #tcp #telnet #time #timed

Aaarrrgggghhh, I hate it when I would like to telnet into a device and enter the wrong IP address. This means, by default, waiting for 30 seconds before being able to correct the IP address and start a new telnet session, because there is no escape sequence. SW01#telnet 10.100.12.250 Trying 10.100.12.250 … % Connection timed out; … Read More

Management

Tools Page updated

René Jorissen on October 8, 2008 0 Comments • Tags: #indicator #interface #real #real-time #snmp #time #traffic

I added a new tool to the Tools page, called Interface Traffic Indicator. The tool can be compared to STG, but needs to be installed on a workstation. The tool can be used to measure the throughput of a specific interface. To use the tool, you need at least the IP address of the device … Read More

Routing

Troubleshooting EIGRP

René Jorissen on June 25, 2008 0 Comments • Tags: #active #black #default-metric #eigrp #hold #hole #in #metric #neighbors #out #redistribute #retransmit #rto #stuck #summary #table #time #topology #troubleshooting

To troubleshoot EIGRP you should obvious have a grasp understanding of the specific routing protocol. Of course this doesn’t only apply to the EIGRP routing protocol. Troubleshooting the EIGRP routing protocol on a Cisco devices is mainly about logging the correct information to a syslog server, the buffer or the console and know what the … Read More