Another short cisco recertification review

cisco recertification in the news

Multiprotocol BGP - IPv4 Multicast

Fri, 09 May 2008 08:21:10 +0000
To route multicast traffic between AS’ MBGP is the tool of choice….
RFC 2283 = two new BGP attributes:


Multiprotocol Reachable NLRI (MP_REACH_NLRI)


Type 14


Optional and nontransitive


Always an IPv4 prefix describing feasible routes of one or more multicast sources to advertise (not used for packet forwarding, used for RPF checks)


Address Family Information + Next Hop Information + NLRI ...]

• RPIOS: Provides the Cisco IOS Software sub-package, which is where Cisco IOS Software features are stored and run; each software release has a different RPIOS sub-package




The tangled web of QoS

Sat, 10 May 2008 18:27:09 +0000
If you truly understand something, you should be able to explain it to a child.
QoS is a fractal topic in that it’s not terribly difficult, but you can break it down into many sub-topics, each of which are of equal complexity to the whole, and each of which can be further reduced to smaller, equally ...]

Bloggers Unite - The Movie!

Fri, 09 Nov 2007 21:59:31 +0000
The Bloggers Unite campaign is in full swing now, and the CreativeGuys contribution to getting the word out is video featuring some of your friends from Blog Catalog (and some of their friends). This should get you started with a couple of good ideas of what you can do as your act of kindness.

Using Extended ACLs with IGPs

Wed, 09 Jan 2008 03:32:27 +0000
Extended ACLs work with IGP protocols but you can not match on the subnet mask portion of the route.  Extended ACLs are used with IGP protocols to match the network portion of the route and the IP address of the router that sent the route.  Here is an example of its usage:
Notice that R1 is ...]


old habit

Today I recalled my old habit in configuring the routers. And today as well, I am using that habit for my home lab
access.

What old habit did I have? Configuring the router using notepad and pasted it to the router. Is it a 'bad' habit
or a 'good' habit? I have no idea!

During my work at various clients (particularly in Australia), I must carry out the router configuraion that way.
Whay is that so? To save time! When a customer request a replacement or a new site setup, most of the time the router
is not yet arrived in the office. Thus, to save time, I configure the router based on my best knowledge on the IOS,
chasis, modules, etc. Then I drafted out the basic configuration for connectivity then build the config from that
point on using all 'imagination' in my head on whether this command would do good once pasted or it will wreck havoc
in the production later. To make things worst, 'usually', the router (or even switch) only transits my office area
for around 4 hours. Thus within that 4 hour, I must be able to configured it in the 'full config' and ship it to the
customer in the same day. I would be lucky to have the router arrived at 5pm, but that means I must ship it before
10am the next working day. That means only 2 hours instead of 4 hour 'transit'.

During that period, there was no such thing called dynamips or in-kind. I must really knock on my head in order to
realized whether the config would work or not (not should!).

As of today, I have a poor Internet connection to home's (dynamips) lab. So, to save time I drafted out the
config, verify it that it would (and should!) work and once I arrived home: pasted it and compared it against the
correct answer. I have a quick glimpse on some answers that I have no idea what it asked. More than 90% of the
question is quite clear for me. Only minor (or silly???) misunderstanding in those 10% that might dragged me down
during my next lab attempt.

In the last two days, I have used extensive full-blown dynagen management. It is a very nice tool and could have
been tweaked for more dynamips options. All-in-all, I already have some idea to develop my own dynamips management
console (I will tell you all later once I got my CCIE number, ok? ;) )

It turned out that my answer so far is able to reach fair amount of correctness (I have not really drill the
details, maybe tonight). I am surprised with the result (and happy of course!)

Now the rest remains in the day of the lab next Monday. I will do my best to pass this one this time and earn the
number that I deserve (and have been desperately waiting on).

This article on cisco recertification is supposed to be very useful to one seeking more information on cisco recertification. Do you think so?
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