It seems like an easy one! I mean what could be so hard about area range and summary address command? You will be surprised how many people tend to forget this things or to apply them when not necessary or even worst where is their place to be added. It’s basic knowledge, but sometimes exactly this basic knowledge give us headache.
In the following line, I will try to explain briefly the difference between Area range and Summary address command. First let’s have a look [...]
In a well controlled environment, false information routing should not reach your OSPF domain, as network engineer take care what to advertise and what not into OSPF. But there are cases when you have to deal with 3rd party companies somehow, and you want to be sure that nothing in injected by mistake into your domain. Also this can be a task for CCIE RS lab exam.
And since I specified that this can be an exam task, let take some “DO NOT USE” rule [...]
Many of you already know that usually when you advertise a Loopback interface into OSPF it is advertised with /32 netmask (one IP address) even if the IP address under Loopback interface is with a /24 netmask. If you checked my previous post, you’ll see at the end that I’m right, and the Lo0 address is advertised with /32 netmask.
But what if you have to advertised as a /24 subnet (task require or some testing) ? There is “dirty little trick” to do it. [...]
During my CCIE R&S preparation for lab exam, I encounter a task that requested me to advertise a subnet into OSPF routing protocol, but without using network statement or redistribution command. Since back then I was a little confuse about this, I said to post here maybe it help others.
Please download the topology used in this example here. We have already OSPF prepared and the task request to advertise interface Loopack0 from R0 to OSPF without using network statement or [...]
Which WAN Optimization vendor will consolidate and expand its market position on 2011
447 votes - Thank you all!I add the results in a blog posts so we can see over years on which [more]
CCIE home rack - Ubuntu persistent net rules
In one of my last posts, I was writing about my CCIE home rack which has one server that runs Ubuntu + [more]
Black Friday 2011 - 50% Off on INE bundles
If anybody is interested in buying INE products, do it now. I've got the following marketing e-mail. The [more]
Free streaming course CCNA 640-802 from INE
I'm sure that a lot of people out there got this info already, but for those who are not part of INE [more]
Home lab for CCIE exam training
Before I started with my preparation I was in front of a dilemma. I knew that I will need a rack to [more]
Professionals Blogs
- CCIECisco
Close preview
Loading... - danielhertzberg.wordpress.com
Close preview
Loading... - bradhedlund.com
Close preview
Loading... - routing-bits.com
Close preview
Loading... - blog.ioshints.info
Close preview
Loading... - cisco-tips.com
Close preview
Loading... - blindhog.net
Close preview
Loading... - packetlife.net
Close preview
Loading... - noshut.blogspot.com
Close preview
Loading... - packet-forwarding.net
Close preview
Loading... - Cisco Network Engineer Blog
Close preview
Loading... - amyengineer.wordpress.com
Close preview
Loading... - mellowd.co.uk
Close preview
Loading... - globalconfig.net
Close preview
Loading... - etherealmind.com
Close preview
Loading... - gns3-labs.com
Close preview
Loading... - brainbump.net
Close preview
Loading...
- CCIECisco
