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Help! I screwed up my uBR924

 
 
TJ
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Posts: n/a
 
      11-08-2003
It seems I have gotten myself in a huge bind and need some trustworthy
advice in terms even an idiot can understand. I bought my uBR
modem/router on the "grey market" with the assurance it was plug n
play out of the box. Boy was that wrong. I wanted the unit to function
as a DOCSIS compliant modem compatible with my cable internet
connection, which assigns my IP through dhcp. However, I also wanted
it to function as a router to assign addresses to the PCs connected to
my hub, and some internet security along the way.

The unit came originally with ios 12.1 installed, and I read on the
posts that 12.2 or later was preferred to do what I wanted to do. So I
obtained a copy of the binery file ubr920-k8v6y5-mz.122-10b.bin, which
I flashed using a tftp server and a Cisco console cable (light blue
flat cable with a db9 on one end and rj45 on the other). However, like
an idiot, I erased the other image and when it attempted to reload, it
had an unexpected config error. Since then it reloads from a bootstrap
version. I can no longer get an internet connection to my PC and I can
no longer ping the router. I really need Help. My "show flash"
indicates that the flash file was successfully loaded and still
resides ther, but I can not figure out how to make it work. If you are
willing to help, I would really appreciate it. --


Here is some copies of my configs through hyperterminal:



router(boot)>show flash

System flash directory:

File Length Name/status

1 182091 ubr920-k8o3v6y5-mz.122-10b.bin

[182156 bytes used, 3881076 available, 4063232 total]

3968K bytes of processor board System flash (Read/Write)





router(boot)>enable

router(boot)#show startup-config

Using 848 out of 131072 bytes

!

! Last configuration change at 16:37:30 - Thu Nov 6 2003

! NVRAM config last updated at 16:37:49 - Thu Nov 6 2003

!

version 12.1

service config

no service pad

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

!

hostname router

!

!

!

!

!

!

clock timezone - -6

ip subnet-zero

!

!

interface Ethernet0

ip address 10.1.0.25 255.255.0.0

no ip route-cache

!

interface cable-modem0

ip address negotiated

no ip route-cache

cable-modem boot admin 2

cable-modem boot oper 5

cable-modem downstream saved channel 735000000 27 4

cable-modem mac-timer t2 40000

cable-modem dhcp-proxy interface Ethernet0

!

ip default-gateway 10.x.x.x

no ip http server

ip http cable-monitor advance 192.168.100.1 255.255.255.0

ip classless

!

snmp-server manager

!

line con 0

transport input none

line vty 0 4

login

!

end
 
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Bob by The Bay
Guest
Posts: n/a
 
      11-09-2003
Hi TJ,

Robert here.

A config error may have been due to a number of commands in the
startup-config that are no longer valid under the new IOS. It could be more
serious, but since the error wasn't mentioned, it's hard to say. I suspect
that your modem is booting under config-register 0x2101 which would cause it
to "(boot)" as your modem is doing.
Do this to see if it helps:

router(boot)>enable
router(boot)#config term
router(boot)(config)#conf 0x2102
router(boot)(config)#exit
router(boot)#reload

Allow the unit to reload and see if it comes up under the new IOS.

If it does, consider doing the following:

By the looks of the config, it appears that an attempt was being made
(perhads by the previous owner) to make this unit act as a router instead of
the default DOCSIS cable modem (bridge mode). I would suggest losing this
config as it won't be functional anyway under the newer IOS. It's usually
best to make sure that the modem works in default DOCSIS bridging mode first
anyway.

To get back to a default config, go back into config mode

router>config term
router#write erase
rouer#reload

Let the modem reboot and see if your connectivity to the Internet is
restored.

To use the 924 in router mode, I think you'll need to get a different IOS
image as 12.2(10b) has been reported to have serious problems with the
'cable-modem dhcp-proxy'. 12.2.(7b) works as well as most other revisions.

The following is a working config for routing, NAT and local DHCP services
for your inside network:

version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname cable
!
logging buffered 20480 debugging
!
username xxxxx privilege 15 password 0 yyyyy
clock timezone - -8
ip subnet-zero
ip tftp source-interface cable-modem0
ip dhcp excluded-address 192.168.1.1
!
ip dhcp pool inside
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
domain-name broadbandISP.com
dns-server zzz.zzz.zzz.zzz yyy.yyy.yyy.yyy
lease 30
!
ip audit notify log
ip audit po max-events 100
ip ssh time-out 120
ip ssh authentication-retries 3
call rsvp-sync
!
!
!interface Loopback0********THIS INTERFACE WILL BE CREATED AUTOMATICALLY -
no need to configure***********
! ip address xxx.xxx.xxx.xxx 255.255.255.255
!
interface Ethernet0
ip address 192.168.1.1 255.255.255.0
ip nat inside
no ip mroute-cache
!
interface cable-modem0
ip nat outside
no ip mroute-cache
no cable-modem compliant bridge
cable-modem dhcp-proxy nat testpool
!
!******THE FOLLOWING 2 LINES WILL BE CREATED AUTOMATICALLY - no need to
configure********************
!ip nat pool testpool xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx netmask 255.255.240.0
!ip nat inside source list 99 pool testpool overload
ip classless
no ip pim bidir-enable
no ip domain-lookup
no ip http server
no ip http cable-monitor
!
access-list 99 permit 192.168.1.0 0.0.0.255
snmp-server packetsize 2053
snmp-server manager
!
voice-port 0
input gain -2
output attenuation 0
!
voice-port 1
input gain -2
output attenuation 0
!
alias exec c config terminal
alias exec s show run
alias exec ib show ip interface brief
alias exec ir show ip route
alias exec sc show contr c0 mac state
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line vty 0 4
exec-timeout 0 0
logging synchronous
login local
!
scheduler max-task-time 5000
end


"TJ" <> wrote in message
news: om...
> It seems I have gotten myself in a huge bind and need some trustworthy
> advice in terms even an idiot can understand. I bought my uBR
> modem/router on the "grey market" with the assurance it was plug n
> play out of the box. Boy was that wrong. I wanted the unit to function
> as a DOCSIS compliant modem compatible with my cable internet
> connection, which assigns my IP through dhcp. However, I also wanted
> it to function as a router to assign addresses to the PCs connected to
> my hub, and some internet security along the way.
>
> The unit came originally with ios 12.1 installed, and I read on the
> posts that 12.2 or later was preferred to do what I wanted to do. So I
> obtained a copy of the binery file ubr920-k8v6y5-mz.122-10b.bin, which
> I flashed using a tftp server and a Cisco console cable (light blue
> flat cable with a db9 on one end and rj45 on the other). However, like
> an idiot, I erased the other image and when it attempted to reload, it
> had an unexpected config error. Since then it reloads from a bootstrap
> version. I can no longer get an internet connection to my PC and I can
> no longer ping the router. I really need Help. My "show flash"
> indicates that the flash file was successfully loaded and still
> resides ther, but I can not figure out how to make it work. If you are
> willing to help, I would really appreciate it. --
>
>
> Here is some copies of my configs through hyperterminal:
>
>
>
> router(boot)>show flash
>
> System flash directory:
>
> File Length Name/status
>
> 1 182091 ubr920-k8o3v6y5-mz.122-10b.bin
>
> [182156 bytes used, 3881076 available, 4063232 total]
>
> 3968K bytes of processor board System flash (Read/Write)
>
>
>
>
>
> router(boot)>enable
>
> router(boot)#show startup-config
>
> Using 848 out of 131072 bytes
>
> !
>
> ! Last configuration change at 16:37:30 - Thu Nov 6 2003
>
> ! NVRAM config last updated at 16:37:49 - Thu Nov 6 2003
>
> !
>
> version 12.1
>
> service config
>
> no service pad
>
> service timestamps debug uptime
>
> service timestamps log uptime
>
> no service password-encryption
>
> !
>
> hostname router
>
> !
>
> !
>
> !
>
> !
>
> !
>
> !
>
> clock timezone - -6
>
> ip subnet-zero
>
> !
>
> !
>
> interface Ethernet0
>
> ip address 10.1.0.25 255.255.0.0
>
> no ip route-cache
>
> !
>
> interface cable-modem0
>
> ip address negotiated
>
> no ip route-cache
>
> cable-modem boot admin 2
>
> cable-modem boot oper 5
>
> cable-modem downstream saved channel 735000000 27 4
>
> cable-modem mac-timer t2 40000
>
> cable-modem dhcp-proxy interface Ethernet0
>
> !
>
> ip default-gateway 10.x.x.x
>
> no ip http server
>
> ip http cable-monitor advance 192.168.100.1 255.255.255.0
>
> ip classless
>
> !
>
> snmp-server manager
>
> !
>
> line con 0
>
> transport input none
>
> line vty 0 4
>
> login
>
> !
>
> end



 
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TJ
Guest
Posts: n/a
 
      11-09-2003
Robert:
I read one of your earlier posts to someone with similar (boot)
problems so I exhausted your current suggestion earlier. It appears
that I have dug myself in well above my axles and need a BIG towtruck.
I believed I was purchasing this unit legitimately with at least some
downloadable support, but I have learned that is not true. In my
desparation and while waiting for anybody to post some advice here, I
have been asking everybody I know if they can help me, and have
reached the conclusion that the file I flashed with is likely corrupt
and it has nuked the old ios, leaving me with only the bootstrap to
work with. Cisco is no help to me, since I refuse to pay a year's
salary just to be able to download a working ios one time. I will, at
this point, be happy to put the thing back into bridging mode and run
it just as a cable access, and use an inexpensive router on my end,
ignoring all the incredible potential features of this unit. I have
tried using sample simple bridging configs from the Cisco website, but
some of the commands just refuse to work. I need some very simple
"idiot-proof" advice on how to do this in the bootstrap, or I will
have to dumpster it. If anybody knows the Router God, my hands are
lifted up at this time. --
 
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Bob by The Bay
Guest
Posts: n/a
 
      11-10-2003
Unfortunately the boot helper image alone doesn't provide enough
functionality for the unit to operate as a DOCSIS cable modem. It does
still allow an IP address to be assigned to the Ethernet interface and
allows the "copy tftp flash" command to be used.

Robert

"TJ" <> wrote in message
news: m...
> Robert:
> I read one of your earlier posts to someone with similar (boot)
> problems so I exhausted your current suggestion earlier. It appears
> that I have dug myself in well above my axles and need a BIG towtruck.
> I believed I was purchasing this unit legitimately with at least some
> downloadable support, but I have learned that is not true. In my
> desparation and while waiting for anybody to post some advice here, I
> have been asking everybody I know if they can help me, and have
> reached the conclusion that the file I flashed with is likely corrupt
> and it has nuked the old ios, leaving me with only the bootstrap to
> work with. Cisco is no help to me, since I refuse to pay a year's
> salary just to be able to download a working ios one time. I will, at
> this point, be happy to put the thing back into bridging mode and run
> it just as a cable access, and use an inexpensive router on my end,
> ignoring all the incredible potential features of this unit. I have
> tried using sample simple bridging configs from the Cisco website, but
> some of the commands just refuse to work. I need some very simple
> "idiot-proof" advice on how to do this in the bootstrap, or I will
> have to dumpster it. If anybody knows the Router God, my hands are
> lifted up at this time. --



 
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