101 Resources for Self Learning Cisco

Self learning Cisco? Is it possible?

Why not – with so many resource in internet like Blog, tutorials, video, wiki, forum etc will help newbie like me. After see many term like CCNA, CCIE, frame relay etc that I don’t know in networking field I found that Cisco is the answer, Cisco have standard and their certification is needed in related networking job. I’m just chemical engineer who wanna learn about networking so I need to list useful link to help me learning Cisco.

No intention to take certification for now but who knows I’ll take one some day 🙂 Since I’m very very new in learning Cisco I try to list useful link I found and will update the list on demand.

Learning On Demand rules 🙂

1. About Cisco From Wikipedia

Cisco Systems, Inc.NASDAQ: CSCO, SEHK: 4333) is a global company headquartered in San Jose, California, USA, that designs and sells networking and communications technology and services under four brands: Cisco, Linksys, WebEx and Scientific Atlanta. Initially, Cisco manufactured only enterprise multi-protocol routers, but today Cisco’s products can be found everywhere from the living room to the enterprise to service provider networks. Cisco’s vision is “Changing the Way We Live, Work, Play and Learn.” Cisco’s current tagline is “Welcome to the human network.”.

2. Certification On Cisco From Wikipedia

3. Start Learning On Certification Level

>>>> CCNA

CCNA 1, Intro to Networking, Networking Fundamentals, Networking Media, Cable Testing, Cabling LANs and WANs, Ethernet Fundamentals, Ethernet Technologies, Ethernet Switching, TCP/IP Protocol Suite and IP Addressing, Routing Fundamentals, TCP/IP Transport and Application Layers

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Calculating Idle-PC values in Windows XP

First try dynamips make me shock, my winamp get cold 🙂

100% cpu utilization means I can do multitask beside waiting for current process over.

Looking around at dynamips blog and read Hafidz blog give me clue about idle PC.

Try it out on my laptop :

1. Uncompress IOS and put it on images folder

2. Update Dynamips to latest version (0.2.7 final release)

3. Enter command prompt

idlepc.PNG

4. Run dynamips affect process (94%) before using idle PC value
idlepc2.PNG

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Install xorg 7.2 via package, still error upgrading php4-gd

Finally I’m using xorg 7.2 🙂

Using package

kongja# pkg_add -vr xorg

kongja# portversion -v | grep ‘< '

[Updating the pkgdb in /var/db/pkg … – 405 packages found (-0 +256) …………………………………………………………………………………………………………………………………………………………………………………………………………………………………. done]
dri-6.5.3,2                 <   needs updating (port has 6.5.3_1,2) libGL-6.5.3_1               <  needs updating (port has 6.5.3_2) libungif-4.1.4_2            <  needs updating (port has 4.1.4_3) luit-1.0.2                  <  needs updating (port has 1.0.2_1) php4-gd-4.4.6               <  needs updating (port has 4.4.7) t1lib-5.1.1,1               <  needs updating (port has 5.1.1_1,1) xorg-server-1.2.0_1,1       <  needs updating (port has 1.2.0_2,1)

kongja# portupgrade php4-gd

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in Unix | 17 Words

Dynamips 0.2.7 final release, update now

While reading tutorial of dynagen, I just read  this part :

There is a newer version of Dynamips available than the one bundled with the Dynagen Windows installer. / How do I use Dynagen with Windows 2000 or Windows XP SP1?

The version of Dynamips included with the Windows Dynagen installer requires Windows XP SP2. In either of the above cases, download the Windows binaries from the Dynamips site (http://www.ipflow.utc.fr/blog/). For Windows XP / 2003 rename the xxx file to “dynamips.exe”. For Windows 2000, use the xxx file instead. “dynamips.exe” and “cygwin1.dll” to “C:\Program Files\Dynamips”, replacing the existing files.

I visit the blog and voila!

Dynamips 0.2.7  final release :

The 0.2.7 final release is available. Compared to 0.2.7-RC3, it contains the following fix:

  • Cisco 2691/3725/3745: high packet loss on integrated FastEthernet ports when they were simultaneously enabled (incorrect interrupt clearing in TX ring handling, please see BTS entry #171 for details).

The development will continue with 0.2.8-RC1 to be published soon.

great, I can try how to use newer version of Dynamips right away 🙂

I download binaries file for my windows xp here

update_dynamips01.PNG

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Logical Volume in FreeBSD with gconcat

New data come everyday make existing storage media no longer reliable, need to add new harddisk

New harddisk + old harddisk need to join in single volume

FreeBSD provide a few method, gvinum, gconcat and gstripe

Since I only have two harddisk I try use gconcat :

kongja# df -H

Filesystem Size Used Avail Capacity Mounted on
/dev/ad0s1a 5.2G 111M 4.7G 2% /
devfs 1.0k 1.0k 0B 100% /dev
/dev/ad0s1d 52G 38G 9.3G 80% /home
/dev/ad0s1e 7.3G 7.0G -295M 104% /usr
/dev/ad0s1f 11G 4.5G 6.0G 43% /var
/dev/ad2s1d 194G 137G 42G 77% /data3
/dev/ad1s1d 243G 1.9M 224G 0% /data2
/dev/ad3s1d 242G -12k 223G -0% /data4

unmount /data2 and /data4 for merger operation :

kongja# umount /data2
kongja# umount /data4

Merger :

kongja# gconcat label -v data5 /dev/ad1s1d /dev/ad3s1d

Metadata value stored on /dev/ad1s1d.
Metadata value stored on /dev/ad3s1d.
Done.

make new mount point :

kongja# mkdir /data5

kongja# mount /dev/concat/data5 /data5

Check size of new partition /data5

kongja# df -H /data5

Filesystem Size Used Avail Capacity Mounted on
/dev/concat/data5 485G 4.1k 446G 0% /data5

Great, to make it permanent, must add new entry in fstab and edit loader.conf :

geom_concat_load=”YES”

Yay, FreeBSD rocks

Can’t wait for 7.0 with ZFS 🙂

in Unix | 229 Words