12-12-2006
we have abt 16 unix boxes and maybe a bunch of other appliances like firewalls, routers, load balancers etc ..
I previously used those brown little boxes from nortel which sun recommended, it basically has a built-in network interface for an IP address and up to 8/16 serial ports, basically connect from TS out to server side serial port DTE - RS232 I think.
You could telnet to it remotely into the TS and make a rs232 connection to a unix box as though you were sitting infront of the server console. Pretty good, you could work from home and do things like down/plumb/unplumb a network interface without getting kicked out of the system.
Or if in the middle of the night your box went down or went into a panic loop and you got paged, instead of rushing down to the site you could telnet to the terminal concentrator and look at what was going on at the console.
Not having something like this meant everytime the box went down or everytime there's a change request you had to be at the site where your servers are located.
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LEARN ABOUT CENTOS
pppoe-discovery
PPPOE-DISCOVERY(8) System Manager's Manual PPPOE-DISCOVERY(8)
NAME
pppoe-discovery - perform PPPoE discovery
SYNOPSIS
pppoe-discovery [ options ]
pppoe-discovery { -V | -h }
DESCRIPTION
pppoe-discovery performs the same discovery process as pppoe, but does not initiate a session. It sends a PADI packet and then prints the
names of access concentrators in each PADO packet it receives.
OPTIONS
-I interface
The -I option specifies the Ethernet interface to use. Under Linux, it is typically eth0 or eth1. The interface should be "up"
before you start pppoe-discovery, but should not be configured to have an IP address. The default interface is eth0.
-D file_name
The -D option causes every packet to be dumped to the specified file_name. This is intended for debugging only.
-U
Causes pppoe-discovery to use the Host-Uniq tag in its discovery packets. This lets you run multiple instances of pppoe-discovery
and/or pppoe without having their discovery packets interfere with one another. You must supply this option to all instances that
you intend to run simultaneously.
-S service_name
Specifies the desired service name. pppoe-discovery will only accept access concentrators which can provide the specified service.
In most cases, you should not specify this option. Use it only if you know that there are multiple access concentrators or know
that you need a specific service name.
-C ac_name
Specifies the desired access concentrator name. pppoe-discovery will only accept the specified access concentrator. In most cases,
you should not specify this option. Use it only if you know that there are multiple access concentrators. If both the -S and -C
options are specified, they must both match.
-A
This option is accepted for compatibility with pppoe, but has no effect.
-V | -h
Either of these options causes pppoe-discovery to print its version number and usage information, then exit.
AUTHORS
pppoe-discovery was written by Marco d'Itri <md@linux.it>, based on pppoe by David F. Skoll <dfs@roaringpenguin.com>.
SEE ALSO
pppoe(8), pppoe-sniff(8)
PPPOE-DISCOVERY(8)