From: McClure, Allen (Allen.McClure@Yum.com)
Date: Tue Sep 16 2003 - 17:11:39 GMT-3
"If a host name is not resolved, the new router attempts to load
router-confg or ciscortr.cfg."
Have you tried these file names in case the hostname isn't resolved
correctly?
Not sure, just a thought.
Allen G. McClure
CCNP/CCDP/MCSE
Yum! Brands, Inc.
Sr. Network Analyst
allen.mcclure@yum.com
-----Original Message-----
From: chandru lohana [mailto:chandrul@gtllimited.com]
Sent: Tuesday, September 16, 2003 12:44 AM
To: Snow, Tim
Cc: ccielab@groupstudy.com
Subject: RE: Autoinstall over Frame-relay
Hi Tim ,
I tried sniffing , the existing router router is not requesting any
file ..
I even did debug ip udp omn Existing Router ..the request comes in
existing router from the new router ..
debug ip udp on EXISTING ROUtter AND COMMUNICATION FROM 172.16.6.6 (68)
TO 255.255.255.255(67) 172.16.6.5 (67) TO 172.16.9.183 HAPPENS AND EW
ROUTER TRIES TO GET THE FILE S VIA BOOTP BROADCAST AND ALSO VIA PORT 53
dns BORADCAST BUT WITHOT ANY SUCCESS..
also One more thing which is starnge ..
the new router gets the IP address via auto install .. 172.16.6.6 when I
start the continuous ping on TFTP
the ping continous for sometime and then breaks say around 2 min..
my observation few temporary routes gets installed in new router
pointing to existing router , but after 2 minor so .. the communication
breaks..
regards
Chandru lohana
-----Original Message-----
From: Snow, Tim [mailto:timothy.snow@eds.com]
Sent: Tue 9/16/2003 6:45 AM
To: chandru lohana
Cc: 'ccielab@groupstudy.com'
Subject: RE: Autoinstall over Frame-relay
Chandru,
Is it possible for you to install a sniffer on the lan segment where
your TFTP server is, I'd be interested in seeing the filename that the
new router is requesting.
Per the following snippet from cisco, the router.cfg file should have
worked even without the "ip host router 172.16.6.6"
After acquiring an IP address acquired from the RARP, DHCP, or BOOTP
server, the new router will attempt to resolve its hostname from a
network configuration file or from a DNS service.
The new router will first attempt to resolves its IP address-to-hostname
mapping by sending a TFTP broadcast requesting the file "network-confg"
or "cisconet.cfg".
The network configuration file is a configuration file generally shared
by several routers. In this case, it is used to map the IP address of
the new router to the name of the new router. The network configuration
file must reside on a reachable TFTP server and must be globally
readable. For example, to assign a hostname of "rtr1" to a new router
with the address 192.168.10.2, the following line must appear in the
network configuration
file:
ip host rtr1 192.168.10.2
If the new router cannot locate and download a "network-confg" or a
"cisconet.cfg" file, or if the IP address-to-hostname mapping does not
match the newly acquired IP address, the new router sends a DNS
broadcast request. If a DNS server is available and has an entry that
maps the acquired IP address of the new router to its name, the new
router successfully resolves its name.
If DNS does not have an entry that maps the new router's address to its
name, the new router cannot resolve its hostname. The new router will
then attempt to download a default configuration file ("router-confg",
"router.cfg", or "ciscortr.cfg") from the TFTP server. If this attempt
also fails, the router will enter Setup mode, or, if using Frame
Relay-based AutoInstall, will enter user EXEC mode.
If you can't get it to work, I'll try and simulate your setup tonight
and see what I can find. Do let me know.....
Tim
-----Original Message-----
From: chandru lohana [mailto:chandrul@gtllimited.com]
Sent: Monday, September 15, 2003 10:04 AM
To: ccielab@groupstudy.com
Subject: Autoinstall over Frame-relay
hi ,
I am trying Autoinstall over Frame-relay Scenario..as under
TFTP server-eth0-- R1 S0( existing router) ----FR switch ----- S0 R2
new
config of router R1 :- existing router :-
int s0
encap fr
no shut
clockrate 128000
int s0.1 multi-point
ip address 172.16.6.5 255.255.255.0
fr map ip 172.16.6.6 100 br
ip helper address 172.16.9.183
ip ospf priority 255
int e0
ip address 172.16.9.5 255.255.255.0
router ospf 1
network 172.16.6.0 0.0.0.255 area 0
IP address of TFTP server 172.16.9.183 attached to ethernet
I have created two files in tftproot directory
1. network-confg containg the host name of new router
ip host router 172.16.6.6
2. another file router.cfg with config for new router ..
Nowwhen I do autoinstall on new router I get IP address on the
frame-relay interface of new router i.e 172.16.6.6
and TFTP server also starts pinging 172.16.6.6 for some ( 2 minutes)
and then PING BREAKS .. and the new router is not able to download and
any filer from TFTP ....
I have stated debug ip udp on EXISTING ROUtter AND COMMUNICATION FROM
172.16.6.6 (68) TO 255.255.255.255(67) 172.16.6.5 (67) TO 172.16.9.183
HAPPENS AND EW ROUTER TRIES TO GET THE FILE S VIA BOOTP BROADCAST AND
ALSO VIA PORT 53 dns BORADCAST BUT WITHOT ANY SUCCESS..
WILL BE OBLIGED IF SOMEBODY CAN HELP..
THANKS AND REGARDS
CHANDRU LOHANA
***Get your CCIE and a FREE vacation: Shop.GroupStudy.com***
This archive was generated by hypermail 2.1.4 : Wed Oct 01 2003 - 07:24:29 GMT-3