Technical Blog


QoS parsing on Cisco routers

As I wrote in my previous article, Cisco ASR have a strange way of indexing its cbQos* tables, so I had to rewrite a parser following the MIB more closely. It is available as part of a bigger software part, originally written by Shane Scott, namely a QoS Zenpack for Zenoss. I adapted Shane’s work to […]


Cisco ASR 1001

QoS on Cisco ASR

In CISCO-CLASS-BASED-QOS-MIB.my, Cisco says: Service policy is a policymap that is being attached to a logical interface. Because a policymap can also be a part of the hierarchical structure (inside a classmap), only a policymap that is directly attached to a logical interface is considered a service policy. Each service policy is uniquely identified by […]


nftables to replace iptables firewall facility in upcoming Linux kernel

Nftables has been selected for inclusion in the upcoming Linux Kernel 3.13. After years of development – including a iptable-compatibility mode – the new kernel module is now ready for release. Nftable is simpler than iptables, it cleans up ip6 integration and it allows for easier rule scripting. Those interested to get going fast can […]