Monthly Archives: February 2013


Problem: You want to know which switch and what port your Linux machine is connected to? Solution: If the switch does CDP (all Cisco switches do), it tells you a lot of information. Tcpdump can capture and show this information. … Continue reading

Posted in Cisco, Linux | Tagged , , | Comments Off on CDP / LLDP Fun

AVM Fritz!box DHCP Problem

Problem: I wanted to provide a CWMP (TR-069) ACS URL to an AVM modem using DHCP on the WAN Interface, but the DHCP server ignores this vendor-option. Discussion: Following the TR-069 specs, the CWMP-ACS Server can be included in an … Continue reading

Posted in Internet, Routing | Tagged , , , , , , | Comments Off on AVM Fritz!box DHCP Problem