My CLUS 2015 Schedule for San Diego
With roughly two months to go before Cisco Live starts, here is my preliminary schedule for San Diego.
I have two CCDE sessions booked to help me prepare for the CCDE exam. I have the written scheduled on wednesday and we’ll see how that goes.
I have a pretty strong focus on DC because I want to learn more in that area and that should also help me prepare for the CCDE.
I have the Routed Fast Convergence because it’s a good session and Denise Fishburne is an amazing instructor and person.
Are you going? Do you have any sessions in common? Please say hi if we meet in San Diego.
What’s In My Bag (Hint: not much)
Recently @BobMcCouch posted a photo of the contents of his bags. He’s got a lot of gear, including a hammer, and a dent-puller. He assures us that it’s for lifting tiles, but I’m not so sure. Sounds to me like he’s worried about a few dings in the supermarket carpark.
It all sounded a bit scary. I want to provide a different perspective, that of someone who tries to minimise what they carry. I don’t want young engineers to think that they have to build up a huge toolbox, and the physical strength to lug it around. You might choose to do that, but it’s not the only path.
Note: I am not saying that what Bob is doing is wrong. Bob’s a smart guy, and if he’s carrying all that stuff, you can be sure it’s for a reason. What I’m trying to say is that there are different paths in network engineering.
The Bag Itself
My general rules for a laptop bag are that it should be as small as I can get away with, and it should not look too much like a laptop bag. So pretty much anything from Targus is inappropriate.
Today I use the “ Continue reading
Network Break 34 – Fixed
Excerpt: Coffee, virtual doughnuts and networking. A perfect combination.
Author information
The post Network Break 34 – Fixed appeared first on Packet Pushers Podcast and was written by Greg Ferro.
IPv6 is 20 years old
An interesting message appeared on v6ops mailing list a few days ago: the first interconnect between independent IPv6 implementations was established 20 years ago. No wonder some youngsters who don't know any better treat this venerable protocol like a modem and ignore it in favor of IPv4 ;)Network Break 34
Excerpt: Coffee, virtual doughnuts and networking. A perfect combination.
Author information
The post Network Break 34 appeared first on Packet Pushers Podcast and was written by Greg Ferro.
VIRL and CML- L2 connectivity Usecase
This is a continuation of my VIRL, CML blog series. VIRL/CML overview is covered here. In this blog, I will cover L2 connectivity usecase. L3 support has been present in VIRL for quite some time, L2 support was added recently in VIRL. I used the IOSvL2 experimental image for this usecase. Official L2 image is … Continue reading VIRL and CML- L2 connectivity Usecase
Connecting VIRL, CML networks to outside world
This is a continuation of my VIRL, CML blog series. VIRL/CML overview is covered here. It will be good to connect VIRL, CML networks to outside world. Following are some use cases. If management interface of VIRL routers are accessible from outside machines, we can run management application in the client machine and connect directly … Continue reading Connecting VIRL, CML networks to outside world
VIRL Simulation – L3 connectivity Usecase
This is a continuation of my VIRL, CML blog series. VIRL/CML overview is covered here. Here, we will create a L3 IGP network running OSPF. I have used IOS nodes for all routers, we can use XR and NXOS routers as well. I didnt do it because the VM images are bigger for XR and … Continue reading VIRL Simulation – L3 connectivity Usecase
VIRL and CML – Installation
This blog is part of my VIRL and CML series. VIRL/CML overview is covered here. In this blog, I will cover the installation steps and how to get started with the first simulation. I have tried 2 approaches to install CML and 1 approach to install VIRL. Since I work at Cisco, I did not … Continue reading VIRL and CML – Installation
VIRL and CML – Overview
CML(Cisco Modeling lab) and VIRL(Virtual Internet and Routing lab) are Network modeling platforms from Cisco. I have been trying this out for the last 2 weeks and I am very impressed by what it can do. I feel that the potential for this platform is so huge that it will create a fundamental impact in the … Continue reading VIRL and CML – Overview
SDxCentral Weekly News Roundup — April 3, 2015
Did you miss out on all the SDx news this week? Never fear, we're here to tell you what new market research says, and why Meru is saying "Adios, Aruba."
SDxCentral’s Top 10 SDN and NFV Articles – March 2015
Check out SDxCentral's most-read articles of March 2015.
The Optical White Box Is Coming
First servers, then switches — could optical transport be next to get the white box treatment?
Use software license optimization tools to get your money’s worth out of SaaS
This vendor-written tech primer has been edited by Network World to eliminate product promotion, but readers should note it will likely favor the submitter’s approach.
Software as a Service (SaaS) breaks the shackles of traditional software licensing approaches, but savvy users still optimize their SaaS environments to avoid undue costs.
SaaS subscription models typically require a one to three year commitment. Customers are invoiced, usually on a monthly basis, and the license typically uses some sort of billing metric based on resource usage, such as the number of end users that can access the product. The flexibility of SaaS licensing models enables organizations to expand the use of the product according to their needs during the term of the subscription.
To read this article in full or to leave a comment, please click here
Exporting RSA keys from Cisco ASA: Harder than it should be
Unlike Cisco IOS routers, which by default don't allow RSA private keys to be exported from NVRAM, Cisco ASAs don't protect private keys. But there's no command (of which I'm aware) to directly export the keys either.Sometimes you need to squirrel away those keys. You can do it by getting a certificate that uses the keys, then exporting a certificate bundle (with private key included). Here's how.
First, create a key:
crypto key generate rsa label mykey modulus 2048
Next, create a trustpoint which references the key, and generate a self-signed certificate:
crypto ca trustpoint throwaway
keypair mykey
enrollment self
crypto ca enroll throwaway noconfirm
Now the throwaway trustpoint has a certificate. Export that certificate to the terminal.
no terminal pager
crypto ca export throwaway pkcs12 <passphrase>
Save the blob of text including the begin/end lines. The blob is a PKCS12 bundle encrypted using the passphrase above and then base64 encoded. Be sure to save the encryption passphrase.
-----BEGIN PKCS12-----
MIIJZwIBAzCCCSEGCSqGSIb3DQEHAaCCCRIEggkOMIIJCjCCCQYGCSqGSIb3DQEH
BqCCCPcwggjzAgEAMIII7AYJKoZIhvcNAQcBMBsGCiqGSIb3DQEMAQMwDQQI4KTD
...etc...
ru1WrVnO7wFa+83BK8D+aQ7UedzQuU6NOiDrjPR0w8uWSLwKmmSVgnZN4BEwPTAh
MAkGBSsOAwIaBQAEFGA2bfp4y+a/R29RZ9TA8sCUSZ+jBBRvppgVbM8rBbW62096
L/HnJErexgICBAA=
-----END PKCS12-----
We no longer need the certificate or the throwaway trustpoint in which it's stored. Kill it. The private key will survive.
no crypto ca trustpoint throwaway noconfirm
The easiest way to Continue reading