From: Wes Morris (wmorris@ceriumnetworks.com)
Date: Wed Dec 11 2002 - 22:36:58 GMT-3
It is a configuration file that has commands that apply to all routers in the network. As far as I know it always consists only of a list of "ip host" statements associating ip addresses with host names. This way routers that use it (either configured via certain autoinstall scenarios or those that have "service config" running) will be able to determine thier hostnames. That way a router that gets its address via autoinstall or DHCP can learn that its' name is say RTR1, and then request a router-specific configuration file. The router firsts requests the network-wide configuration file, that has a fixed name, to learn its hostname, and then requests its router-specific configuration file from the tftp server.
The network specific file on a tftp server will be called either network-confg or cisconet.cfg (depending on whether the server supports long names or 8.3.) Router-specific files are called, of course, hostname-confg, e.g. RTR1-confg or RTR1.cfg.
I have only ever used a network-wide configuration file in an autoinstall scenario.
-wes
>> This is an interesting email thread going back and forth. Having no
>> need to go to the dictionary because I know what all those words mean, I
>> am still trying to understand this in the context of a 'config file'. I
>> would suppose a router-specific config file is one that is, well
>> specific to that router! That's easy. But what is a 'network-wide'
>> config file? It doesn't say network wide 'command' it says 'config
>> file'. I just don't get it!
>> Joe
>> -----Original Message-----
>> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>> Jennifer Bellucci
>> Sent: Wednesday, December 11, 2002 10:23 AM
>> To: Abdallah Al-Suwailem
>> Cc: ccielab@groupstudy.com
>> Subject: Re: file?
>> Are you studying for the lab?
>> If come across the term "router specific" then they are referring to
>> that particular router. Like configure..configure a loopback interface
>> that is specific to a router or configure a loopback interface that
>> reflects the local router characteristics. In a lab they ask you to
>> configure R1 as a NTP server, the NTP server is being configured on R1
>> and the commands are being entered on R1, right? If we were to configure
>> the command:
>> !
>> int s0
>> clock rate 500000
>> ip add 10.0.100.1 255.255.128.0
>> encap frame
>> frame lmi-type ansi
>> no ip split
>> no shut
>> !
>> 1. is "clock rate 500000" command configured on R1 router specific or
>> not? Does it effect R2 (remote router) ? 2. is the ip add router
>> specific/local...can you use the same address on another interface, try
>> entering it on a router, what happens?(using a standard
>> config)
>> 3. if I enter 'Encap Frame' on a router, does the same command get
>> entered automatically on the remote router?
>> Now Network-wide..when you configure a OSPF network with 3 routers, do
>> enter the command 'router ospf x' on all 3 routers? When you configure a
>> BGP peering between 2 BGP routers, can you do it without using 'router
>> bgp x' command?
>> I am not being rude, but you really need to read a dictionary...not all
>> words are Cisco/network 'specific'. Cisco did not dream up these words.
>> Take the words apart..specific: meaning single, individual, local,
>> confined, singular, island, targeted, aimed, geared towards. The meaning
>> of 'wide'...broad, extensive, open, ample, spacious.
>> Hope you understand the meaning of the words now, if you don't sorry I
>> can't help you any more.
>> Later, Jbell
>> ----- Original Message -----
>> From: Abdallah Al-Suwailem
>> To: Jennifer Bellucci
>> Sent: Wednesday, December 11, 2002 10:15 AM
>> Subject: Re: file?
>> Thanks for your attention and NO you didn't answer the question.
>> Best Regards
>> Abdallah
>> Jennifer Bellucci wrote:
>> Have I answered this? My e-mail organisation has gone down.
>> ----- Original Message -----
>> From: Abdallah Al-Suwailem
>> To: Jennifer Bellucci
>> Sent: Thursday, December 05, 2002 8:51 PM
>> Subject: Re: file?
>> Sorry for interrupt, can you clarify it more ?
>> Thanks
>> Abdallah
>> Jennifer Bellucci wrote:
>> router-specific being just on that router and nothing else, like a
>> island. Network-wide means across the network. should distinguish if
>> this means across specific protocol like OSPF network-wide or generally
>> across the network, in which case - all devices that make up the
>> implementation. If u need more clarity, let me know and mail me offline.
>> ----- Original Message -----
>> From: "Hung, Sing-Yu" <Sing-Yu.Hung@pccw.com>
>> To: <ccielab@groupstudy.com>
>> Sent: Wednesday, December 04, 2002 1:29 PM
>> Subject: file?
>> Hi,
>> I just failed in the first attempt. By the way can anyone tell me what
>> is the difference between Router-specific config file and
>> Network-wide
>> config file?
>> Bradford Hung
>> Pacific Century CyberWorks
>> Tel: 288 33125
>> .
.
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