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 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
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
4. Run dynamips affect process (94%) before using idle PC value
Finally I’m using xorg 7.2 🙂
kongja# pkg_add -vr xorg
kongja# portversion -v | grep ‘< '
[Updating the pkgdb in /var/db/pkg … – 405 packages found (-0 +256) …………………………………………………………………………………………………………………………………………………………………………………………………………………………………. done]
dri-6.5.3,2Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â < Â needs updating (port has 6.5.3_1,2)
libGL-6.5.3_1Â Â Â Â Â Â Â Â Â Â Â Â Â Â <Â needs updating (port has 6.5.3_2)
libungif-4.1.4_2Â Â Â Â Â Â Â Â Â Â Â <Â needs updating (port has 4.1.4_3)
luit-1.0.2Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <Â needs updating (port has 1.0.2_1)
php4-gd-4.4.6Â Â Â Â Â Â Â Â Â Â Â Â Â Â <Â needs updating (port has 4.4.7)
t1lib-5.1.1,1Â Â Â Â Â Â Â Â Â Â Â Â Â Â <Â needs updating (port has 5.1.1_1,1)
xorg-server-1.2.0_1,1Â Â Â Â Â Â <Â needs updating (port has 1.2.0_2,1)
kongja# portupgrade php4-gd
While reading tutorial of dynagen, I just readÂ 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 â€œdynamips.exeâ€. For Windows 2000, use the xxx file instead. â€œdynamips.exeâ€ and â€œcygwin1.dllâ€ to â€œC:\Program Files\Dynamipsâ€, replacing the existing files.
I visit the blog and voila!
Dynamips 0.2.7Â 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
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
kongja# gconcat label -v data5 /dev/ad1s1d /dev/ad3s1d
Metadata value stored on /dev/ad1s1d.
Metadata value stored on /dev/ad3s1d.
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 :
Yay, FreeBSD rocks
Can’t wait for 7.0 with ZFS 🙂