Monthly Archives: December 2015

Cisco IOS and Configuration Archiving

If you were under the impression that only Juniper has a nice revision system for archiving configurations… think again and behold a not very well known feature in IOS: configuration archiving…   archiving-notes

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TDR functionality within Cisco IOS high-end Switches

  This document introduces a nice features in IOS that is not very commonly know: a time domain reflectometer functionality on the SwitchPorts! tdr-example-cisco-3560-switch

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IPV6, Stateless Autoconfiguration and the M / O Flags

stateless-autoconfiguration-with-prefix-discovery

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A fresh look on Anycast Addressing..

explanation-anycast

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A case study of DHCP snooping and IP Source Guard

dhcp-snooping-and-ip-source-guard-study

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TCPdump compatible traces in IOS

This post will show how to perform LibPcap snooping on IOS devices. Two types of IOS routers (7200 and csr1000v) are covered in the document. tcpdump-on-ios

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VTP v.3 Study

vtp-3-notes

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Prio field STP within the BID of the BPDU

explanation-bpdu-bid-priority-in-pvst-plus

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IPV6 address formats explained

ipv6-address-analysis

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IPV6 and Stateless Auto Configuration and Stateless DHCP

ipv6-and-stateless-autoconfiguration-and-m-flag

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