In June of 2013 Cisco released the newest member of the ISR family, the ISR4451-X router (Cisco – blog post). At that time it was the only model in the ISR44xx line, but today it now has some new siblings. Today, October 2, 2014, Cisco has introduced some companious, namely the ISR 4321, 4331, 4351, and 4431.
The below graphic from Cisco that shows the new line and the performance characteristcs of each. You will note, for example, that the ISR4321 says 50–100 Mbps. The base version of the device will support 50 Mbps, but to move to 100 Mbps on that box you just need a software license. This will allow a network to grow with it needs without having to replace hardware, you will just have to add a license file. Back in the ISR G1/G2 days we need to sometime replace hardwre in order to gain additional performance, but that is not the case with the ISR 4000 series. Much of that comes thanks to Cisco using IOS-XE on these devices. A quick blurb IOS-XE from the previous link is :
My hosting provider, Digital Ocean, has added IPv6 to one of their NY Data centers. Over this weekend, and thanks to Shellshock BASH vulnerability, I finally got around to migrating the server to a new host that is IPv6 enabled.
So as of this morning, there is a now a AAAA record for www.fryguy.net!
IPv6 Ping Output:
PING www.fryguy.net(2604:a880:800:10::161:a001) 32 data bytes
40 bytes from 2604:a880:800:10::161:a001: icmp_seq=0 ttl=52 time=77.0 ms
40 bytes from 2604:a880:800:10::161:a001: icmp_seq=1 ttl=52 time=76.9 ms
40 bytes from 2604:a880:800:10::161:a001: icmp_seq=2 ttl=52 time=76.7 ms
40 bytes from 2604:a880:800:10::161:a001: icmp_seq=3 ttl=52 time=76.9 ms
--- www.fryguy.net ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3009ms
rtt min/avg/max/mdev = 76.793/76.943/77.078/0.101 ms, pipe 2
---- Finished ------
I recently purchased a Juniper J2320 from eBay for a fair price. I know it is an older router, but it has the features I need in order to test and write a few things. When I received the router it was not sent with a wiped config, so I was unable to log into it upon booting.
Since I need to recover the device, figured might as well write and share how to do it!
Obviously the first thing you will need will be a Serial connection to the device. I am assuming you have a USB -> Serial adapter, if not this is the one I have and I got it from Amazon here LINK.
1. Make sure the power to the device is turned off. If it is turned on, please use the power button to force the system to shut down cleanly. If you do not do this and just yank the power, you risk corrupting the OS and having more fun later.