Setting up an NTP Server... Revisited

Setting up an Ubuntu NTP Server in preparation for creating a syslog-ng server. 

I’m working on creating a syslog-ng server on UbtSvr2 to capture events from routers in my GNS3 environment. The first step is having correct time on all devices; this isn’t important for syslog to function but its nice to associate syslog events with the current date and time – which my devices don’t have:

EIGRP Feasibility Condition

Problem:

R1 has both a successor and a Feasible successor for R3 L3 (3.3.3.0/27) and R2 L2 (2.2.2.0/24)

But, when looking at the EIGRP Topology Table for R2 and R3, there isn't a Feasible successor for R3 L3 (3.3.3.0) nor for R2 L2 (2.2.2.0) - what's the deal?!

It's probably due to the feasibility condition

Adding Ringtones to 7960G & 7970G phones

CME Router: 3825 w/CME installed
Phones: 2x7960G & 1 7970G – all are registered & using SCCP
TFTP Server: Win2008 running SolarWinds TFTP Server. Connectivity throughout.

I have several ringtones I want to feed to my IP Phones but was having trouble getting the phones to:

1. Recognize that the ringtones were available
2. Getting the phones to find the files

Expand Your VirtualBox VM Disk Size

VirtualBox ver: 4.2.10
Virtual Machine (VM): Windows 7 pro, guest additions installed
Requirements: Ability to run a command prompt and VirtualBox as administrator (the usual problem with accessing VBoxManage).

Scenario:
I have a Win7Pro Virtual Machine (VM) with a 20 GB dynamically allocated storage disk (VDI) which only has about 2 GB of space left. I need to install a program on the VM which requires 2.5 GB of disk space. In short, I cannot install this program unless I increase the disk size.

So, in this post I’m going to increase the same disk (disk 0 or drive C) from 20 GB to 30 GB. This will give me the space I need with room to grow.

Batching Find/Replace Using Notepad++

I did this a while ago when I was preparing a lot of config files (.txt) for use on my routers & switches. I needed to find interface numbers and replace them with interfaces that I had available or was using (i.e. s0/0/0 with s0/0, etc.). As I don’t use this feature very often, it is a prime candidate for a blog post.

Centralized Server-Based AAA Authentication (2 of 2)

PART 2:

Now that SRV is set up and running WinRadius we can configure DLS1 & DLS2 to use RADIUS on SRV for login authentication (telnet).

The configurations are straight forward and if you’d like to know more I’d suggest searching Cisco’s site.

Some of the key information we needed to take note of in Part 1 was the following:

Radius IP: 10.1.50.1
Radius Password (a.k.a NAS Secret): WinRadius
Radius auth-port: 2812
Radius acct-port: 2813
Our User: User1
& Password: CCnP

Centralized Server-Based AAA Authentication (1 of 2)

Part 1: Configuring the Radius Server

In this post we want to secure access to our devices and do so with a single authentication server. There are many reasons to do this; for example we can easily manage users and passwords without having to micromanage each device.

The topology is similar to the RSPAN post:

DLS1 VLAN 5 (MGT): 10.1.5.252
DLS2 VLAN 5 (MGT): 10.1.5.253