Wednesday, 13 October 2010

NEW IEEE 802.3aq enables cost effective 10 gig network adoption

NEW IEEE enables cost effective 10 gig network adoption

Over 78% of the fiber deployed on the campus and in building backbones are multimode fibe.

Cost effective upgrade to 10 Gig require new Fiber inetrfacing , NEW IEEE standard 802.3aq addresses this issue

Support of distance up to approx 200 Meters on all grades of MMF , Yes , You got it right if you have OM1 Fiber installed you can have it upgraded to 10 Gig

Cisco is the first in the industru to offer 10 G Base - LRM (long Range Multimode) Optical intreface to be used in Campus high speed LAN

Cisco SFP-10G-LRM

The Cisco 10GBASE-LRM Module supports link lengths of 220m on standard Fiber Distributed Data Interface (FDDI) grade multimode fiber (MMF). To ensure that specifications are met over FDDI-grade, OM1 and OM2 fibers, the transmitter should be coupled through a mode conditioning patch cord.

No mode conditioning patch cord is required for applications over OM3. For additional information on mode conditioning patch cord requirements please see:

Wednesday, 6 October 2010

Cisco Router not saving the Config

Hi Guys,

I have come across one very strange problem , I asked my colleague to take some old routers from store , as we were planned to use old Cisco 1800 for the new deployment , as we don't know the old password , so He reset it and went of Sick ,

a week before Deployment i thought to do some stress testing , when i start setting up router in lab environment every thing seems working .I roughly generated 60 commands of confing ,

thought to reboot and test it , When i reboot it and i was .... OOOOOHHHHH

No config factory default and was sooo much ...*£$%

there come troubleshooting , started and finally figure out the problem ,

Look at the out put;

Show version :-

Router#show version
Cisco IOS Software,
Synched to technology version 12.3(7.11)T1
Technical Support: »
Copyright (c) 1986-2004 by Cisco Systems, Inc.
Compiled Fri 25-Jun-04 17:56 by ealyon

ROM: System Bootstrap, Version 12.2(11r)YV5, RELEASE SOFTWARE (fc1)
ROM: Cisco IOS Software,
Router uptime is 1 minute
System returned to ROM by power-on
System image file is "flash:

This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.
A summary of U.S. laws governing Cisco cryptographic products may be found at:
If you require further assistance please contact us by sending email to

Cisco C831 (MPC857DSL) processor (revision 0x500) with 58983K/6553K bytes of memory.
Processor board ID FHK101224P2 (1431813270), with hardware revision 0000
CPU rev number 7
3 Ethernet interfaces
4 FastEthernet interfaces
128K bytes of NVRAM.
12288K bytes of processor board System flash (Read/Write)
2048K bytes of processor board Web flash (Read/Write)

Configuration register is 0x142

Hell how can i miss this minute thing and it took me 3 Hours to troubleshoot, and i was about to .... Log a call with Cisco Tac ,

It was config register setting which causes the system software to ignore the contents of NVRAM

and the fix is simple

confreg 0x2102

Hope you don't spend that much time ... and you googled it first

Tuesday, 5 October 2010

iPhone 4 Problems

I phone no doubt a good Phone ,

I dont mean to market or badmouth it ,

I just need to put some major problems faced by the users,

Death Grip

when some one Left handed hold the phone it dies no signal,


Buy 20 £ bumper Case that works well

Glass Screen :-

Glass screen is more Vulnerable to Scratch and Glass is glass


Wrap it properly

proximity Problems during phonecalls sometimes when I end calls my fone Menu is in the middle of something else .

Offical statement about signals

Gripping any mobile phone will result in some attenuation of its antenna performance, with certain places being worse than others depending on the placement of the antennas. This is a fact of life for every wireless phone. If you ever experience this on your iPhone 4, avoid gripping it in the lower left corner in a way that covers both sides of the black strip in the metal band, or simply use one of many available cases.