APC Radius authentication with Cisco ISE
In this blog, I will show you how to use Cisco ISE to authenticate users into APC Network-enabled devices such
2 min read
Blog
Cisco ISE config-backup failure
Symptom
Do I like Cisco ISE, yes? Do I like fixing never-ending ISE bugs, absolutely not?
When you try to
2 min read
Using Python to resolve multiple hostnames to IP addresses
As a Network Engineer, I work with IP addresses all day long. But most of the time I am handed
4 min read
Terraform Data Sources
"Have you ever tried to find a specific book in a library without the help of the librarian or
3 min read
Cisco FMC HTTPS Certificate with OpenSSL
Problem
You want to install HTTPS certificate for the Cisco FirePower Management Centre (FMC)
Solution
I already have an Internal
2 min read
Network Configuration Backup with Ansible and Git
The typical way you would perform Network Configuration Backup is by using NCM software such as Solarwinds NCM, Rancid, Oxidized
6 min read
Setup AWS Network Firewall
What is it?
AWS Network Firewall is a managed firewall service for our VPC. We can use Network Firewall to
5 min read
Ansible with Cisco - Part 2 ios_config module
Cisco IOS configurations use a simple block indent file syntax for segmenting configuration into sections. Ansible ios_config module provides
8 min read
Ansible with Cisco - Part 1 Installation and basic set-up
Hello readers! I have updated this blog post with new and relevant information. I encourage you to check out the
13 min read
Configuring PIM AnyCast RP with MSDP on Juniper
What problem does AnyCast RP solves?
Having a single active rendezvous point (RP) is a single point of failure.
Anycast
7 min read
Juniper Source-Specific Multicast (SSM)
In the previous articles, we have discussed about PIM Dense Mode and PIM Sparse
Mode. Both protocols use IGMPv2 and
7 min read
Juniper Multicast PIM Sparse Mode
PIM Sparse mode uses an 'explicit join' approach whereas PIM Dense mode uses
'implicit join' approach.
10 min read
Juniper Multicast PIM Dense Mode
Multicast Overview
IP has three fundamental types of addresses: unicast, broadcast, and multicast.
A unicast address is used to send
8 min read
ASA to AWS asymmetric routing - BGP
By default, instances that we launch into an Amazon VPC can't communicate with our on-prem network. We can
1 min read
Configuring Junos OSPF Stub and NSSA Areas
In the previous post, we discussed Type-4 and Type-5 LSAs. This article focuses on Stub and NSSA areas. I highly
9 min read
OSPF Type-4 & Type-5 LSAs - Junos
In the previous posts, we discussed Type-1, Type-2 and Type-3 LSAs. This article
focuses on Type-4 and Type-5 LSAs. This
5 min read
Cisco %Error opening ftp://x.x.x.x (Incorrect Login/Password)
Problem
When attempting to copy file via FTP to a Cisco Switch you see the following
error
cisco-3850#copy ftp
1 min read
Juniper OSPF Route Summarization
In the previous posts, we discussed about Type-1, Type-2 and Type-3 LSAs. This
article focuses on OSPF Route summarization. I
5 min read