Cisco 837 IOS update 1

[DorsetBunny]

Maybe silly (I know the if it ain't broke don't fix it rule), but my 837 is on an older IOS. She also only (currently) has 12MB Flash.

Question 1; what are the pitfalls to watch if I go from c837-k9o3y6-mz.123-2.XE4.bin to c837-k9o3sy6-mz.124-12.bin (The latest one I can find as my cisco acct is not of sufficient level to get direct).

Question2; I've found DRAM and FLASH on ebay for this router ($20) to take it from 64/12 to 80/24. If I get this I could go with the most recent IOS (requires 16MB Flash) (assuming I can find the image somewhere). Am I spending money for nothing here? (I am thinking later in the year to go and get a 877 with Wireless inbuilt)

Thanks for tolerating a few newbie questions guys

Rachel

 

[burtsbees]

If you are going for wireless, then why bother?

Also, are you running into a bug, or is there any particular functionality you are looking for that your present IOS does not have?

/

tim@tim-laptop ~ $ sudo apt-get install windows
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Couldn't find package windows...Thank Goodness!

 

[DorsetBunny]

Well I do have a WAP at the moment (a nice Linksys). The planned replacement (877w) won't happen until later this year. Currently I am having some stability issues with my line (I am getting thousands of DSL Defect LOM messages (9500 between 1900 and 0430 currently).

I've googled the heck out of this and several times encounter the 'check you are up to date' default reply. It got me thinking that perhaps my August'07 firmware could do with a spruce up and maybe it will help.

I am a firm believer in not fixing stuff that ain't broke - but in my case it could be broken; so why not.

It's a pain also right now as I suspect a licence for the IOS will cost me an arm and a leg (and the latest I've found so far from 'other' sources is 12.4-12. Id like to put the last one on there (12-24c).

I will also keep the 837 after the upgrade as I plan to do the CCNA next year and its nice to have a box to play with.

 

[burtsbees]

1)No pitfalls

2)Not a waste---go for it.

3)42

lol

/

tim@tim-laptop ~ $ sudo apt-get install windows
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Couldn't find package windows...Thank Goodness!

 

[DorsetBunny]

Cheers - All went well. I've ordered the Ram to go to a later release if I feel like playing some more.

now running Version 12.4(12) and thus far so good - I've spent some time on a new config file (to remove the backup dialler) so I'll set about testing it tomorrow perhaps - any comments always welcomed....

no service pad
service timestamps log datetime localtime
service password-encryption
service tcp-keepalives-in
service tcp-keepalives-out
logging buffered 52100 debugging
logging trap debugging
logging 10.10.10.2
logging on
!
hostname FLUFFY
!
boot-start-marker
boot system flash c837-k9o3sy6-mz.124-12.bin
boot-end-marker
!
username <ADMINUSER> privilege 15 secret 5 <ADMINPASSWORDHASH>
clock timezone GMT 0
!
no aaa new-model
ip subnet-zero
!
no ip dhcp use vrf connected
ip dhcp excluded-address 10.10.10.1 10.10.10.10
!
ip dhcp pool CLIENT
import all
network 10.10.10.0 255.255.255.0
default-router 10.10.10.1
dns-server 4.2.2.1 4.2.2.2
lease 0 2
!
ip domain-lookup
ip name-server 4.2.2.1
ip name-server 4.2.2.2
!
no ip audit notify log
no ip audit po max-events 100
no ftp-server write-enable
no scripting tcl init
no scripting tcl encdir
no crypto isakmp enable
!
interface Ethernet0
Description Ethernet
ip address 10.10.10.1 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat inside
no ip mroute-cache
no ip virtual-reassembly
!
interface ATM0
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
no atm ilmi-keepalive
pvc 0/38
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
dsl enable-training-log
dsl lom 200
dsl noise-margin 3
!
interface FastEthernet1
no ip address
duplex auto
speed auto
!
interface FastEthernet2
no ip address
duplex auto
speed auto
!
interface FastEthernet3
no ip address
duplex auto
speed auto
!
interface FastEthernet4
no ip address
duplex auto
speed auto
!
interface Dialer0
Description Dialer
ip address negotiated
no ip virtual-reassembly
encapsulation ppp
dialer pool 1
dialer-group 1
no cdp enable
ip nat outside
dialer idle-timeout 0
ppp authentication chap pap callin
ppp chap hostname <ISPSTUFF>
ppp chap password 7 1<ISPSTUFF>1
ppp pap sent-username r<ISPSTUFF> 7 1<ISPSTUFF>1
ppp ipcp mask request
ppp ipcp route default
ppp ipcp address accept
!
ip route 0.0.0.0 0.0.0.0 Dialer0
ip nat inside source list 1 interface Dialer0 overload
no ip http server
no ip http secure-server
ip classless
!
access-list 102 permit ip 10.10.10.0 0.0.0.255 any
access-list 105 permit tcp any any range 27014 27050
ip nat pool mw2 10.10.10.2 10.10.10.2 netmask 255.255.255.0 type rotary
ip nat inside source list 102 interface Dialer1 overload
ip nat inside source static tcp 10.10.10.2 6552 interface Dialer1 6552
ip nat inside source static udp 10.10.10.2 6552 interface Dialer1 6552
ip nat inside source static udp 10.10.10.2 28960 interface Dialer1 28960
ip nat inside source static tcp 10.10.10.2 27015 interface Dialer1 27015
ip nat inside source static udp 10.10.10.2 27015 interface Dialer1 3101
ip nat inside destination list 105 pool mw2
!
dialer-list 1 protocol ip permit
!
banner motd Q
######################################################################
# _ _ #
# \`\ /`/ Welcome to FLUFFY #
# \ V / #
# /. .\ Cisco 837 ADSL Router #
# =\ T /= Admin: The Bunny #
# / ^ \ V2.0 released 14th February 2010 #
# {}/\\ //\ Cisco IOS 12.4-12 #
# __\ " " /__ #
# (____/^\____) If you aren't suposed to be here; LEAVE NOW! #
# #
######################################################################

Q
!
line con 0
exec-timeout 120 0
no modem enable
transport preferred all
transport output all
stopbits 1
!
line aux 0
transport preferred all
transport output all
stopbits 1
!
line vty 0 4
exec-timeout 0
access-class 23 in
login local
length 0
transport preferred all
transport input all
transport output all
!
scheduler max-task-time 5000
sntp server 193.62.22.82
sntp broadcast client
!
end

 

[burtsbees]

ip domain-name local
crypto key gen rsa mod 1024 (or 2048)
line vty 0 4
trans in ssh tel
hostname Thor
or
hostname Bitor
or
hostname Zeus
or
Hostname Achilles

...just sayin'...lol

/

tim@tim-laptop ~ $ sudo apt-get install windows
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Couldn't find package windows...Thank Goodness!

 

[DorsetBunny]

oops almost forgot to lock out telnet - thanks for the nudge