Sponsored Content
The Lounge War Stories How not to install fibre links between data centres! Post 302686933 by gull04 on Wednesday 15th of August 2012 04:49:57 PM
Old 08-15-2012
How not to install fibre links between data centres!

Hi Folks,

A couple of years ago we had to replace the core switches between two of our data centres, a simple task for the most part - these new switches would be state of the art Cisco Catalyst units.

The link between the two sites was a dark fibre, with 8Gb bandwidth running full duplex over a redundant cable pair. It was quite a surprise when we started to tidy up the cables to find this - see the attached images.

The cables comprised two male to male cables, with the ends joined with Bluetack. I'm amazed that it worked for so long. - Actually I'm amazed it worked at all!

Regards

Dave
How not to install fibre links between data centres!-bluetack_fairyjpg
How not to install fibre links between data centres!-bluetack_fairy_againjpg

Last edited by gull04; 08-15-2012 at 09:33 PM..
 

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... (0 Replies)
Discussion started by: sualcavab
0 Replies

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... (4 Replies)
Discussion started by: ajilesh
4 Replies

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. (8 Replies)
Discussion started by: chlawren
8 Replies

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? (11 Replies)
Discussion started by: Harleyrci
11 Replies

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 ? (2 Replies)
Discussion started by: newtoaixos
2 Replies

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. (1 Reply)
Discussion started by: atahmass
1 Replies

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... (16 Replies)
Discussion started by: aixkidbee
16 Replies
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)
All times are GMT -4. The time now is 10:03 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy