automation, networking, worklife
SNMP Counters - Collection Interval Variation
Counter data types are commonly used in SNMP monitoring. They are extremely useful, but there’s a couple of caveats around how to use them. Here’s a couple of issues I’ve...
29 Jun 2014
CloudFlare: That Was Easy
I switched this blog over to using CloudFlare a few days ago. It’s all been pretty painless, and I highly recommend it to others.
28 Jun 2014
APNIC - final 'final' /22 now available
APNIC entered their “final /8” phase in April 2011. From that time, new and existing APNIC members could request a maximum of one IPv4 /22 prefix. Once you had requested...
24 Jun 2014
Using Paramiko/Python with FortiMail
Fortinet makes an email security/anti-spam appliance called FortiMail. I wanted to collect spam and virus statistics from it, to integrate with our Network Monitoring Systems. Unfortunately the data is not exposed via SNMP or API,...
22 Jun 2014
Cisco Political Comments - Why?
I freely admit to not truly understanding the American political/economic system. Sure, I get the general mechanics of it, but I don’t understand the subtle plays, and why people do certain...
20 Jun 2014
Getting More Information From Your Logs
Packet Pushers normally focuses on networking, but episode 192 covered “Logging Design and Best Practices.” I often think about logging in the context of network management, so it was good...
19 Jun 2014
Is Cisco Struggling with Their ACI Messaging?
Cisco ACI represents a significant shift in the way we approach networking. This sort of shift will need massive customer education to explain their new vision. I’m getting the impression...
02 Jun 2014
Comparing Employment Relationships
I periodically re-evaluate my career, and my current position, and try to decide A) Should I change, and B) What sort of change should I make? One part of evaluating...
28 May 2014
War Stories: Proxy ARP Auto-Configuration
This article is Part 5 in a 12-Part Series. Part 1 - War Stories: Loops that Permanently Broke the Network Part 2 - War Stories: Switches Lying about Duplex Mismatches...
26 May 2014
Proxy ARP Sucks
Proxy ARP was often used in network designs 10–15 years ago, to enable NAT. It helped get around some specific challenges, but it was always an administrative hassle, and caused...
24 May 2014
HP IMC 7.0 E0202: Steady Improvements
When I’m evaluating products, I’m more interested in their progression and development, than the exact feature list currently shipping. I like products that have a frequent release cycle, with a...
06 May 2014
Monitoring IPv6 vs IPv4 Traffic on Juniper SRX
I use a Juniper SRX 110 at home, and my ISP is enlightened enough to offer IPv6 by default to all customers. My devices are dual-stack, and I know that a...
04 May 2014
HP IMC (26)
HP Master ASE (8)
HP NNMi (6)
Routing & Switching (58)
Open Source (2)