How not to install fibre links between data centres! Post: 302688641

Sponsored Content

The Lounge War Stories How not to install fibre links between data centres! Post 302688641 by methyl on Sunday 19th of August 2012 09:35:51 PM

08-19-2012

Registered User

I trust that the local fibre welding company sorted your problem. Usually costs �1,000 per half-day. The repair kit is rather expensive to own.

We had a case where BT arrived to install a 100-core telephone cable. Rather than use the vacant duct labelled for the purpose, they decided to pull their cable through a duct which was dedicated to inter-building fibre optic communications. When the cable jammed they used a van to pull the cable. They managed to knock out 13 sites by destroying multiple fibre optic cables. The cable duct lining was also destroyed in the process.

A �100,000 repair was carried out in just three days. This included excavating and repairing the damaged duct and replacing two miles of fibre optic cable). The "engineers" concerned were banned from site.

The second attempt to install the telephone cable was heavily supervised and went without incident.

methyl

View Public Profile for methyl

Find all posts by methyl

7 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

How to install FreeBSD without loosing my data?

hi. I am newbie in Unix. I wanted to install Free BSD 5.2.1 to my computer which winXp was already installed. But i couldn't. I chose Standard. Then it said you are going to use dos style fdisk partitioning. Then a window displayed begining like this. WARNING: A geometry of 155127/16/63 for...

2. Shell Programming and Scripting

4 x fibre cards elimination

Hi, I have variables like mentioned below and want to separate as mentioned in output. var1="4 x fibre cards" var2="2 fibre cards" var3="6 - fibre cards" var4="4 x dual-port" I have variables like this.I want to separate numbers from this and fibre cards from this. output has to be...

3. AIX

Install Fibre Card AIX 5.3

Hello, I have two systems that are being prepared to be SAN attached .. can anyone tell me any specific checks I should perform prior to the cards being installed... I am aware of firmware / OS level and relevant drivers, is there anything else? thanks Chris.

4. Solaris

Hard Links and Soft or Sym links

When loooking at files in a directory using ls, how can I tell if I have a hard link or soft link?

5. AIX

List all the soft links and hard links

Hi I'm logged in as root in an aix box Which command will list all the soft links and hard links present in the server ?

6. Hardware

Fibre Channel HBA recommendations?

We will be buying new Xeon E5-based servers for our datacenter and were wondering which Fibre Channel host bus adapters we should select for these. The choices are Emulex or QLogic (8Gb FC HBAs). Anybody have any recommendations on which is the better choice? Thanks in advance.

7. AIX

VIOS - fibre adapters not seeing luns

Hi guys, I've been trying to tackle this issue for days and I'm stumped. Hopefully someone can give more light on what else I can do. I have a p7 series box, with dual VIOS and 10 lpars and everything was working fine until I had to move the box to another location in the data centre. Ensured...

LEARN ABOUT DEBIAN

flow-gen

flow-gen(1)						      General Commands Manual						       flow-gen(1)

NAME

       flow-gen -- Generate test flows

SYNOPSIS

       flow-gen [-h]  [-b big|little]  [-d debug_level]  [-n count]  [-V version]  [-z z_level]

DESCRIPTION

       The flow-gen utility generates a test pattern of flows in any of the currently supported export versions typically for debugging purposes.

OPTIONS

       -b big|little
		 Byte order of output.

       -d debug_level
		 Enable debugging.

       -h	 Display help.

       -n count  Generate count flows.	Default 1000.

       -V version
		 Generate version type exports.  Supported versions are:

	   1	NetFlow version 1 (No sequence numbers, AS, or mask)
	   5	NetFlow version 5
	   6	NetFlow version 6 (5+ Encapsulation size)
	   7	NetFlow version 7 (Catalyst switches)
	   8.1	NetFlow AS Aggregation
	   8.2	NetFlow Proto Port Aggregation
	   8.3	NetFlow Source Prefix Aggregation
	   8.4	NetFlow Destination Prefix Aggregation
	   8.5	NetFlow Prefix Aggregation
	   8.6	NetFlow Destination (Catalyst switches)
	   8.7	NetFlow Source Destination (Catalyst switches)
	   8.8	NetFlow Full Flow (Catalyst switches)
	   8.9	NetFlow ToS AS Aggregation
	   8.10 NetFlow ToS Proto Port Aggregation
	   8.11 NetFlow ToS Source Prefix Aggregation
	   8.12 NetFlow ToS Destination Prefix Aggregation
	   8.13 NetFlow ToS Prefix Aggregation
	   8.14 NetFlow ToS Prefix Port Aggregation
	   1005 Flow-Tools tagged version 5

       -z z_level
		 Configure compression level to  z_level.  0 is disabled (no compression), 9 is highest compression.

EXAMPLES

       Generate a test pattern of 1000 version 5 flows and send them in the Cisco NetFlow packet format to 10.0.0.1 port 9500.

	 flow-gen -V5 | flow-send 0/10.0.0.1/9500

BUGS

       The test pattern may change between releases.

AUTHOR

       Mark Fullmer maf@splintered.net

SEE ALSO

       flow-tools(1)

																       flow-gen(1)