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Archive for November, 2012|Monthly archive page

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Junos – Interface Configuration and Connectivity

In How To, Junos on November 13, 2012 at 08:32

 

Now it is time to get some housekeeping done on these routers.  We will configure the interfaces on each of them.  Once that is complete, we will create a Rescue configuration.  A rescue configuration is a known working configuration that we can roll back to at any time.  We will use this rescue config to reset the routers to a base state before each lab.  Here is our Lab Topology:

 

First up though, we need to get R4 (The Cisco router) configured and setup.

For R4 we need to configure E0 with an IP of 192.168.14.4/24 and the loopback with 4..4.4.4/32.  Once we have it configured, we will save the config to FLASH as base.txt so we can reload it later on.

Router#
Router#conf t
Router (config)#interface Loopback0
Router (config-if)# ip address 4.4.4.4 255.255.255.255
Router (config-if)#exit
Router (config)#interface Ethernet0
Router (config-if)# ip address 192.168.14.4 255.255.255.0
Router (config-if)#no shut
Router(config-if)#exit
Router(config)#hostname R4
R4(config)#exit
R4#wr mem
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IOS XR – Cisco Videos and Training

In CCIE, IOS XR on November 6, 2012 at 10:02

Ok, I know I said I was done with the IOS XR stuff, but just had to share this.
Cisco has posted some Videos on YouTube, they are below for your enjoyment.

Also, if you are looking for an IOS XR book – here is a link to the one on Amazon.

Introduction to IOS XR CLI and Configuration

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Junos – Password Recovery, Zeroize, and Loading a Configuration, and other basics

In How To, Junos on November 5, 2012 at 08:30

Guess it is time to get the party started! Just a quick note, there is a vendor that I have used in the past to get hardware for labs, if you are interested in hardware, please let me know and I will put you in touch with them.  You can deal with them directly so that you know you are getting their best price.

 

I am not going to cover how to recovery a lost root password, but if you need that information here is a link to the Juniper KB Article KB17565 below.  This article is for Junos 10.x and higher.
http://kb.juniper.net/InfoCenter/index?page=content&id=KB17565

What I will cover though is getting your Junos device up and running after you recover the root password.  First thing you will want to do is zeroize the device, this will erase all configuration information and reboot the device.

root@J1> request system zeroize
warning: System will be rebooted and may not boot without configuration
Erase all data, including configuration and log files? [yes,no] (no) yes

warning: zeroizing re0

root@J1> Waiting (max 60 seconds) for system process `vnlru_mem’ to stop…done
Waiting (max 60 seconds) for system process `vnlru’ to stop…done
Waiting (max 60 seconds) for system process `bufdaemon’ to stop…done
Waiting (max 60 seconds) for system process `syncer’ to stop…
Syncing disks, vnodes remaining…0 0 0 done

syncing disks… All buffers synced.
Uptime: 5m9s
Rebooting…
[--- Removed the reboot cycle output for this document ----]

Once the device finishes rebooting, you will be at the Amnesiac prompt.  This is the prompt the system give you when there is no configuration on the device.  Almost like is it brand new, out of the box!

Amnesiac (ttyu0)
login: root
(Note: No prompt for a root password as the system is not yet configured)

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