Avaya Technical Configuration Guide for BGP
I use BGP extensively to provide dynamic routing between a number of vendors, business partners and affiliated organizations with whom I’m multi-homed to. I recently had to determine if Nortel/Avaya...
View ArticleCisco Nexus 7010 with BGP over vPC fails
I recently tried standing up a Cisco 3825 router attached to a Cisco 3750E switch which was in turn connected via vPC to a set of Nexus 7010 switches. I spent the better part of two days trying to get...
View ArticleClik here to view.
BGP Soft Reset – Cisco IOS
I just recently learned that the BGP Soft Reset feature in Cisco IOS is automatically implemented in software release 12.0(2)S and later. Earlier software releases required the neighbor...
View ArticleClik here to view.
Application Packet Loss and Performance
I had an interesting problem this past week where a vendor tried to tell me that “no other customers were having issues“. How many times have you heard that line? The problem started with the...
View ArticleClik here to view.
Internet Service Providers – Source Route Filtering
I ran into an interesting problem this past week after I made a fairly small change on one of my border BGP routers. We upgraded one link from a 100Mbps circuit to a 1000Mbps circuit and it was decided...
View ArticleClik here to view.
It’s the networks fault #16
It’s been a while since I’ve published one of these posts so we’re well overdue. Articles SPARK: VIRL is launched! by Anthony Burke – I’m curious to see what VIRL does to the GNS3 community, especially...
View ArticleClik here to view.
BGP Multihomed Internet Data Center
It’s both loved and loathed in the network engineering community but BGP came through for us in the past 24 hours. We utilize BGP to provide dynamic routing between the many Internet Service Providers...
View ArticleClik here to view.
Website Monitoring with Bash and Nagios Plugins
It’s no surprise that I need to know when our websites are down, but I also need to know why they went down. Often the redundancy will kick in and the website will quickly recovery. However, the...
View ArticleCenturyLink/Level 3 Internet meltdown followed by Reddit moderator madness
It was another exciting morning around the Internet. Seems that CenturyLink(Level 3) had a meltdown that caused all sorts of issues for ~ 5 hours this morning starting around 6:04AM EDT and lasting...
View Article
