Cisco - Dirk-Jan's log

Freedom Internet on Cisco modem

This morning I changed to another internet service provider (ISP) known as Freedom. When into tech news in the Netherlands you've must have heard about the XS4ALL story, if not head over to this page. The transition went not as smooth as I hoped for. It took me several hours

Networking

Baby jumbo frames on VDSL by XS4ALL

Last week I acquired a new modem because the old one supplied by the provider was acting strange and I wanted it. The new modem is a Cisco 887VA router equipped with a VDSL2/ADSL2+ interface so that it could replace the previous Fritz!box. A day after I had

877W

Upgrade Cisco IOS on the 877W

Yesterday it struck me I was using a less secure wireless setup while the more secure was just a simple configuration change away. While adjusting the configuration I noticed the software version was pretty dated because my last IOS update (12.4.24T1) was from May 2009. To stay current

877W

Improve wireless security on the 877W

I just discovered my three year old Cisco wireless router was configured to do WPA encryption instead of the more secure WPA2 version, which is the standard nowadays. WPA uses TKIP (Temporal Key Integrity Protocol) while WPA2 is capable of using TKIP or the more advanced AES algorithm. Doing a

877W

Intermittent WiFi signal

I experienced a intermittent WiFi signal lately on multiple devices. Since I haven’t touched my router configuration for a while it had to be something different. Some time passed before I realized it could be a neighbor who was using the same frequency I was using. Looking into my

877W

Cisco 877W CCKM authentication failed

Using the wireless functionality of the Cisco 877W router I discovered that the wireless connection being disconnected en reconnected intermittently. At fist I thought it might be my Linux notebook doing wierd things, but as other wireless clients acting the same I suspected my new broadband router. Looking at the

Cisco

Cisco doing secure SNMP

Version 3 of the Simple Network Management Protocol (SNMP) is developed with as main purpose securing the insecure SNMP protocol. Since I needed to setup SNMP for a monitoring tool I decided to do it the secure way, which is SNMP v3. This article will describe how to configure SNMPv3

877W

877W wireless config

As mentioned earlier I would post my wireless configuration of the Cisco 877W router as soon as I got it to work the way I like. In this setup the commonly used IRB bridge option is not used. This configuration will also work on the 857W model. ! dot11 ssid vlan

877W

New ISP, new router

Recently I had to choose another ISP for my home internet connection, and because my previous modem was a bit limited in it’s capabilities I decided it was time to invest in a Cisco 877W Integrated Services Router. The main reason to choose for the 877W is that I