Author Archives: Judson Bishop

Virtual Switching System (VSS)

This post was tedious in the formatting and was one of the reasons I put off posting it. The notes were taken months ago put I was weary of posting it because of the time involved in formatting it. As … Continue reading

Posted in Routing | Leave a comment

TSHOOT Tickets

I took and did not pass my TSHOOT exam last week. Bummer. I had not studied specifically for the test very hard. In my mind I had already started thinking about the CCIE written and even started doing the “easy” … Continue reading

Posted in Code, Routing | Leave a comment

Does Google Hurt Efficiency?

The other night we were doing a hardware upgrade on a cluster and testing. We were working with the command clusvcadm to relocate a service from one host in the cluster to another but the originating server kept getting power … Continue reading

Posted in Linux, Thoughts | Leave a comment

Mac OSX TFTP Server

At the Circus we have a network management server that runs all of the normal services needed to manage a small network and so I rarely need to fire up the tftp server on my laptop. Today was one of … Continue reading

Posted in Linux | Leave a comment

EIGRP MPLS VPN PE-CE SOO

I couldn’t resist using all of those acronyms. EIGRP – Enhanced Interior Gateway Routing Protocol MPLS – Multiprotocol Label Switching VPN – Virtual Private Networking PE-CE – Provider Equipment – Customer Equipment SOO – Site Of Origin MPLS SOO MPLS … Continue reading

Posted in Routing | Leave a comment

Routing Mnemonics

I’ve been keeping track of some the mnemonics that I have come across or have figured out for myself. For instance in general, in layer 2 elections the lower priority usually wins, however, in layer 3 elections the higher priority … Continue reading

Posted in Routing | Leave a comment

DRBD and Heartbeat

2011-06-01 10:31:23 DRBD and Heartbeat I spent a considerable amount of time over the last couple of days working with DRBD and Heartbeat. Below are the links I used to get things running: http://wiki.centos.org/HowTos/Ha-Drbd http://www.howtoforge.com/vm_replication_failover_vmware_debian_etch_p3 http://www.clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Clusters_from_Scratch/s-intro-pacemaker.html http://www.drbd.org/users-guide/s-heartbeat-r1.html http://www.drbd.org/users-guide/s-heartbeat-config.html http://www.drbd.org/users-guide/s-heartbeat-crm.html Part … Continue reading

Posted in Linux | Leave a comment

Script to Edit GNS3 Topology Files

I have recently been doing more of the GNS3Vault labs and have gotten tired of changing the image name each time I do a lab. The script below is the result. I just change into the directory where the topology.net … Continue reading

Posted in Routing | Leave a comment

Veritas/Symantec Baremetal Restore

I spent a considerable amount of time over the last couple of months testing different restore processes. This is my documentation for restoring Veritas/Symantec backups to a Linux server. The general outline is this: 1. Create a LiveUSB drive to … Continue reading

Posted in Linux | Leave a comment

Xenix

Today on Slashdot someone had a question about getting data off of an old Xenix server. A few years ago I did a consulting job for a customer who had an old Xenix server with no ethernet card that needed … Continue reading

Posted in Linux | Leave a comment