01-28-2009 04:39 PM - edited 03-04-2019 01:01 AM
Hello,
A company has 2800 series router with NM-1CE1T1-PRI (1-port Channelized
E1/T1/ISDN-PRI ) card at HQ and 1800 series router with 2 cards WIC-1B-U-V2
(1-Port ISDN BRI NT-1-WIC) at remote sites.
They have 1 Mbps ISDN link at HQ and 128 kbps ISDN link at branch office.
I want to set up isdn config on the routers to inteconnect them.I have seen
some configs but i am not sure of what to choose.
1- Do I need another card or are these cards enough to set up isdn ?
2- Can you advise me on sample configs ?
Solved! Go to Solution.
01-29-2009 01:35 AM
Hello Kouferidji,
your hardware is good but an ISDN provider wan cloud is needed in the middle.
you cannot connect them back to back in a lab setup.
you can use both B channels to connect to HQ.
For sample configurations you may refer to DDR examples.
see for example
http://www.cisco.com/en/US/tech/tk801/tk133/technologies_configuration_example09186a0080094cd6.shtml
I recommend to use ppp chap authentication and isdn caller screening
Hope to help
Giuseppe
01-29-2009 02:33 AM
some working examples
http://hassairi.50megs.com/#configr
some changes may be necessary depending on your isp switch
01-29-2009 09:45 AM
Hello Kouferidji,
to be able to handle multiple branch offices.
use a subnet /28 like
10.10.10.32/28
the HQ needs to use a dialer profile and not legacy ISDN
an example is:
controller E1 6/1
pri-group timeslots 1-31
!
interface Serial6/1:15
no ip address
encapsulation ppp
dialer rotary-group 5
isdn switch-type primary-net5
isdn incoming-voice data
isdn sending-complete
ppp multilink
no ppp multilink fragmentation
!
int dialer 5
ip address 10.10.10.33 255.255.255.240
encapsulation ppp
dialer pool 5
dialer-group 2
ppp multilink
ppp timeout multilink link add 1
no ppp multilink fragmentation
ppp authentication chap
! then you have multiple dialer map commands
dialer map ip 10.10.10.35 name pippo153 broadcast 6152
dialer map ip 10.10.10.36 name pippo154 broadcast 6154
...
dialer map ip 10.10.10.44 name pippo155 broadcast 6155
dialer map ip 10.10.10.45 name pippo156 broadcast 6156
dialer-list 2 permit ip
where name is the branch router name and you need to change the extension to your actual numbers
you need also a
username remote password remote-password for every branch
where again remote= branch router
on the branch router you need a mirror command
username hq-router-name password thesame_password
make the remote branch to call when needed.
Hope to help
Giuseppe
01-29-2009 01:35 AM
Hello Kouferidji,
your hardware is good but an ISDN provider wan cloud is needed in the middle.
you cannot connect them back to back in a lab setup.
you can use both B channels to connect to HQ.
For sample configurations you may refer to DDR examples.
see for example
http://www.cisco.com/en/US/tech/tk801/tk133/technologies_configuration_example09186a0080094cd6.shtml
I recommend to use ppp chap authentication and isdn caller screening
Hope to help
Giuseppe
01-29-2009 02:33 AM
some working examples
http://hassairi.50megs.com/#configr
some changes may be necessary depending on your isp switch
01-29-2009 05:00 AM
Thanks for the reply
When connnecting remote sites via pri,this command is linking 2 remotes sites with the same interface.I thought we should use different interfaces.
interface Serial 1/0:15
no shutdown
description connected to Cisco801_1,Cisco801_2
no ip address
encapsulation ppp
dialer pool-member 2
dialer pool-member 1
01-29-2009 05:32 AM
Thank you for the reply.In my case i am having one primary rate interface card in HQ with 2mbps link and the wan cloud is there already.
Your config applies for bri interface, what about PRI interface like NM-1CE1T1-PRI ?
I am HAVING SEVERAL branch offices how do i do this?
01-29-2009 08:58 AM
I have read that chanelized E1 cards like NM-1CE1T1-PRI have no built in D channels.Signaling is done inband
Can this card be used for ISDN PRI connection in a central site where the company has several branch offices having WIC-1B-U-V2 card ?
01-29-2009 09:45 AM
Hello Kouferidji,
to be able to handle multiple branch offices.
use a subnet /28 like
10.10.10.32/28
the HQ needs to use a dialer profile and not legacy ISDN
an example is:
controller E1 6/1
pri-group timeslots 1-31
!
interface Serial6/1:15
no ip address
encapsulation ppp
dialer rotary-group 5
isdn switch-type primary-net5
isdn incoming-voice data
isdn sending-complete
ppp multilink
no ppp multilink fragmentation
!
int dialer 5
ip address 10.10.10.33 255.255.255.240
encapsulation ppp
dialer pool 5
dialer-group 2
ppp multilink
ppp timeout multilink link add 1
no ppp multilink fragmentation
ppp authentication chap
! then you have multiple dialer map commands
dialer map ip 10.10.10.35 name pippo153 broadcast 6152
dialer map ip 10.10.10.36 name pippo154 broadcast 6154
...
dialer map ip 10.10.10.44 name pippo155 broadcast 6155
dialer map ip 10.10.10.45 name pippo156 broadcast 6156
dialer-list 2 permit ip
where name is the branch router name and you need to change the extension to your actual numbers
you need also a
username remote password remote-password for every branch
where again remote= branch router
on the branch router you need a mirror command
username hq-router-name password thesame_password
make the remote branch to call when needed.
Hope to help
Giuseppe
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