2 Separate T1 Lines/Routers Into 1 LAN ?

[notShai]

we have an old T1 and we are getting a new T1.
both are separate lines with different IP address and different routers (cisco 3640 and 1841).

is there a way to bring both T1 lines into the LAN?

the reason - we have an internal FTP server which we cant have down - we would like to avoid dropped FTP transactions while the new T1 IP propagates by created a 2nd A record to point ftp.domain.com to the new IP address as well as the old IP address.

or if you have a better solution to avoid down time please share, thank you

 

[North323]

sure, you can bring them in to one router by bonding the T1

 

[psbucs]

if both T1 lines are from the same vendor, look into getting a vwic module and installing it into one of the routers you have.

 

[notShai]

well maybe it is an option can you direct to where would i find a way to do this?

my old T1 uses a wic-1dsu-t1
my new T1 (its a two meg) uses a vwic-2mft-t1-d1 card (2 T1 lines merge into one)

my 1841 router has one more slot i can insert a wic-1dsu-t1 into.

but how do i configure the two cards etc is probably beyond my current knowledge.

is it even possible to have one slot with a 2meg and another slot with a regular t1 wic?

 

[jeter]

So you have an excisting T1 and a two new T1's (3meg)?

I count three T1's as you are describing your application.

What are the T1's for? Who is the provider? What type of T1 (frame-Relay, Point to Point)?

insert a drawing or config (leave out public ip's and passwords).



Go Army!
N+,CCNA,CCVP
Tek-TIP Member 19,650

 

[psbucs]

I assume your vwic module is installed within the Cisco 3640 Router

login to your 3640 router with administrator privledge

Cisco>en <enter>
Password:xxxxxxx <enter>

at the admin prompt # show inventory

Cisco#show inventory <enter>

you should then see something similar to this

NAME: "3640 chassis", DESCR: "3640 chassis"
PID: CISCO3640 , VID: V05 , SN:

NAME: "VWIC2-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1 on Slot 0 SubSlot 1",
DESCR: "VWIC2-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1"
PID: VWIC2-2MFT-T1/E1 , VID: V01 , SN:

verify within your router configuration file that you have settings similar to these.

Cisco#show config <enter>


card type t1 0 1 ( slot 0 SubSlot 1 as per inventory )

controller T1 0/1/0
fdl ansi
cablelength long 0db
channel-group 0 timeslots 1-24
!
controller T1 0/1/1
cablelength long 0db
channel-group 0 timeslots 1-24
!
interface Serial0/1/0:0
no ip address
ip flow egress
encapsulation ppp
ppp multilink
ppp multilink group 1
!
interface Serial0/1/1:0
no ip address
ip flow egress
encapsulation ppp
ppp multilink
ppp multilink group 1

 

[notShai]

thank you!

those T1 and 2xT1 (3meg) are provided by verizon, for internet use.

the idea was to get rid of the T1 once the 2xT1 was in place, but as i mentioned above the DNS propagation issue necessitates having both work together for a little while...

yes 3 T1's.

i thought of plugging BOTH routers into the main switch but if i can figure out how to bring in the three T1's into the 1841 and have them work off one router i think it would be best?

if i choose to plug the two routers into the switch, do i need to disable one of theirs DNS pointers?


on the 1841:

i placed a "WIC 1DSU T1" into slot1 and a "VWIC 2MFT-T1-DI" into slot0.

the config verizon supplied me with is:
(it doesnt account for the slot1 wic-1dsu-t1 which im not sure how "mend" into this code)
_________
_________
card type t1 0 0
!
controller T1 0/0/0
framing esf
linecode b8zs
channel-group 0 timeslots 1-24 speed 64
!
controller T1 0/0/1
framing esf
linecode b8zs
channel-group 0 timeslots 1-24 speed 64
!
interface MFR1
mtu 4470
no ip address
no ip redirects
no ip proxy-arp
encapsulation frame-relay IETF
no ip route-cache cef
no ip mroute-cache
load-interval 30
no arp frame-relay
frame-relay lmi-type ansi
frame-relay multilink bid to gw
no shutdown
!
interface MFR1.500 point-to-point
ip address xxx.xxx.xxx.xxx 255.255.255.252
no ip redirects
no ip proxy-arp
no arp frame-relay
no cdp enable
frame-relay interface-dlci 500 IETF
no shutdown
!
interface GigabitEthernet0/0
ip address yy.yyy.yyy.yyy 255.255.255.0
no shutdown
!
interface Serial0/0/0:0
mtu 4470
bandwidth 1536
no ip address
no ip redirects
no ip proxy-arp
encapsulation frame-relay MFR1
no arp frame-relay
no shutdown
!
interface Serial0/0/1:0
mtu 4470
bandwidth 1536
no ip address
no ip redirects
no ip proxy-arp
encapsulation frame-relay MFR1
no arp frame-relay
no shutdown
!
!
ip route 0.0.0.0 0.0.0.0 MFR1.500
!
line vty 0 4
________
________

the old T1 config on a 3640 with a wic-1dsu-t1:

_________
_________
!
!
ip domain-name xxxxxxxx.com
!
ip inspect name fw1 cuseeme
ip inspect name fw1 ftp
ip inspect name fw1 udp
ip inspect name fw1 vdolive
ip inspect name fw1 streamworks
ip audit notify log
ip audit po max-events 100
ip ssh time-out 120
ip ssh authentication-retries 3
!
crypto isakmp policy 5
authentication pre-share
!
crypto isakmp policy 11
encr 3des
authentication pre-share
group 2
lifetime 28800
crypto isakmp key none address 10.10.10.2
!
!
crypto ipsec transform-set Best esp-3des esp-sha-hmac
crypto ipsec transform-set s1s2 esp-des esp-sha-hmac
crypto mib ipsec flowmib history tunnel size 200
crypto mib ipsec flowmib history failure size 200
!
crypto map mapit 11 ipsec-isakmp
set peer xx.xxx.xxx.xxx
set transform-set Best
match address 102
!
crypto map vpn local-address Tunnel0
crypto map vpn 10 ipsec-isakmp
set peer 10.10.10.2
set transform-set s1s2
match address 108
!
!
!
!
!
!
!
!
!
!
!
!
interface Tunnel0
ip address 10.10.10.1 255.255.255.0
tunnel source yyy.yyy.yyy.yyy
tunnel destination xx.xxx.xxx.xxx
crypto map vpn
!
interface Tunnel1
ip address 10.10.12.1 255.255.255.0
tunnel source yyy.yyy.yyy.yyy
tunnel destination zz.zzz.zzz.zzz
!
interface Ethernet0/0
no ip address
shutdown
half-duplex
!
interface Serial0/0
no ip address
!
interface Serial0/1
description To UUNET (wcomw0g46454)
bandwidth 1536
ip address yyy.yyy.yyy.yyy 255.255.255.252
ip access-group 101 in
ip nat outside
ip inspect fw1 out
encapsulation frame-relay IETF
no ip mroute-cache
no fair-queue
frame-relay interface-dlci 500
crypto map vpn
!
interface FastEthernet2/0
ip address 172.16.1.2 255.255.248.0 secondary
ip address ww.

http://www.www.www

255.255.255.192
ip helper-address 172.30.0.10
ip helper-address 172.16.9.5
no ip redirects
ip nat inside
ip pim sparse-dense-mode
ip cgmp
speed auto
full-duplex
!
router eigrp 100
network 10.10.10.0 0.0.0.255
network 10.10.12.0 0.0.0.255
network 172.16.0.0 0.0.7.255
no auto-summary
no eigrp log-neighbor-changes
!
ip nat pool ovrld ww.

http://www.www.www

ww.

http://www.www.www

netmask 255.255.255.252
ip nat pool swimpool ww.

http://www.www.www

ww.

http://www.www.www

prefix-length 26
ip nat inside source list 120 pool swimpool overload
ip nat inside source route-map nonat interface Serial0/1 overload
ip nat inside source static tcp 172.16.1.117 21 yyy.yyy.yyy.yyy 21 extendable
ip classless
ip route 0.0.0.0 0.0.0.0 xxx.xxx.xxx.xxx
ip route 172.17.0.0 255.255.0.0 172.16.1.1
ip route 192.168.25.0 255.255.255.0 10.10.12.2
ip http server
ip pim bidir-enable
!
access-list 120 deny ip host 172.16.1.250 any
no cdp advertise-v2
!
route-map nonat permit 10
match ip address 109
!
snmp-server community public RO
call rsvp-sync
!
!
mgcp profile default
!
dial-peer cor custom
!
!
!
!
!
line con 0
line aux 0
line vty 0 4
________
________