09-07-2006 06:51 AM
Dear all,
I have two 2801 routers with the 12.4(1c) IOS..
I have two VWIC2-1MFT-T1/E1 cards terminated on HWIC 1 slot..
I need establish E1 link between the routers to transmit IP packets through it..
I am not able to configure the PRI on that..
It takes all the commands required for PRI enabling but for D-channel one I configure the encap as PPP my channel goes down..
I am forwarding following outputs ..
Plz Help.
Router A (network side)
!
network-clock-participate wic 1
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
ip subnet-zero
ip cef
!
no ip dhcp use vrf connected
!
isdn switch-type primary-net5
!
controller E1 0/1/0
clock source internal
pri-group timeslots 1-31
!
!
interface FastEthernet0/0
ip address 192.168.16.131 255.255.255.0
speed auto
full-duplex
no cdp enable
no mop enabled
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
no cdp enable
!
interface Serial0/1/0:15
no ip address
(encapsulation ppp) // here's the problem
dialer pool-member 1
isdn switch-type primary-net5
isdn protocol-emulate network
no fair-queue
!
interface Dialer0
ip address 192.168.1.1 255.255.255.0
dialer pool 1
dialer string 310000
dialer-group 1
!
ip classless
!
ip http server
!
access-list 105 permit icmp any any
dialer-list 1 protocol ip permit
!
control-plane
!
disable-eadi
!
Router B (user side)
!
network-clock-participate wic 1
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
ip subnet-zero
ip cef
!
no ip dhcp use vrf connected
!
isdn switch-type primary-net5
!
controller E1 0/1/0
pri-group timeslots 1-31
!
!
interface FastEthernet0/0
ip address 192.168.20.1 255.255.255.0
speed auto
full-duplex
no mop enabled
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/1/0:15
no ip address
(encapsulation ppp)
dialer pool-member 1
isdn switch-type primary-net5
!
interface Dialer0
ip address 192.168.1.2 255.255.255.0
dialer pool 1
dialer string 210000
dialer-group 1
!
ip classless
!
ip http server
!
access-list 105 permit icmp any any
dialer-list 1 protocol ip permit
!
control-plane
!
disable-eadi
!
=====================
once I configure s0/1/0:15 as encap PPP
plz note the following output
Cisco1#sh isdn sta
Global ISDN Switchtype = primary-net5
ISDN Serial0/1/0:15 interface
******* Network side configuration *******
dsl 0, interface ISDN Switchtype = primary-net5
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 0, Ces = 1, SAPI = 0, State = TEI_ASSIGNED
Layer 3 Status:
0 Active Layer 3 Call(s)
Active dsl 0 CCBs = 0
The Free Channel Mask: 0xFFFF7FFF
Number of L2 Discards = 0, L2 Session ID = 28
Total Allocated ISDN CCBs = 0
debug isdn q921 output:
*Sep 7 15:46:15.791: ISDN Se0/1/0:15 Q921: L2_EstablishDataLink: sending SABME
*Sep 7 15:46:15.791: ISDN Se0/1/0:15 Q921: Net TX -> SABMEp sapi=0 tei=0
*Sep 7 15:46:16.791: ISDN Se0/1/0:15 Q921: Net TX -> SABMEp sapi=0 tei=0
*Sep 7 15:46:17.791: ISDN Se0/1/0:15 Q921: Net TX -> SABMEp sapi=0 tei=0
*Sep 7 15:46:18.791: ISDN Se0/1/0:15 Q921: Net TX -> SABMEp sapi=0 tei=0
*Sep 7 15:46:24.791: ISDN Se0/1/0:15 Q921: L2_EstablishDataLink: sending SABME
*Sep 7 15:46:24.791: ISDN Se0/1/0:15 Q921: Net TX -> SABMEp sapi=0 tei=0
....
one i remove PPP encap...
It shows Multiple_Frame_Established..
Cud any bode plz tell me how to solve this problem with encapsulation
Urgently needed the answer...
09-07-2006 07:29 AM
Hello,
I did not try such a thing before, but if you are using a dialer, you can not change the layer 2 encapsulation, because it is not a leased line, rather it is a normal pri, with lapd. You can not communicate with the teleco's equipent with ppp.
KInd regards,
Bela
09-07-2006 09:15 AM
Probably you have the wrong modules. When you want to set up a point-point connection, you will need the VWIC-xMFT-G703.
Regards,
Leo
09-07-2006 11:07 PM
Hi
Thanks to all for replies.
But now I don't know what to do at all.
I just need to transmit the data (IP packets) from router A to router B through E1 PRI link with dial-out and dial-in procedures. Any suggestions for that?
And can use HDLC encap on the Serial and Dialer interfaces in this case? Ith that possible, or not?
Thanks In Advance
09-08-2006 01:50 AM
Hello,
try the following changes to your configurations:
Router A
controller E1 0/1/0
--> clock source line primary
pri-group timeslots 1-31
!
interface Serial0/1/0:15
no ip address
-->encapsulation ppp)
dialer pool-member 1
isdn switch-type primary-net5
isdn protocol-emulate network
no fair-queue
!
interface Dialer0
ip address 192.168.1.1 255.255.255.0
--> encapsulation ppp
dialer pool 1
dialer string 310000
dialer-group 1
!
--> ip route 0.0.0.0 0.0.0.0 Dialer0
Router B
controller E1 0/1/0
--> clock source line primary
pri-group timeslots 1-31
!
interface Serial0/1/0:15
no ip address
--> encapsulation ppp
dialer pool-member 1
isdn switch-type primary-net5
!
interface Dialer0
ip address 192.168.1.2 255.255.255.0
--> encapsulation ppp
dialer pool 1
dialer string 210000
dialer-group 1
!
ip route 0.0.0.0 0.0.0.0 Dialer0
I assume there is a Telco in between your routers, are do you have them configured in a back-to-back setup ?
Regards,
GNT
09-08-2006 02:38 AM
Hello
Thank you for your suggestions, however our routers haven't the comand "clock source line primary". They have only:
Cisco1(config-controller)#clock source line ?
bits Bits Clocking
independent Independent Source
09-08-2006 03:13 AM
Hello Ivan,
try 'clock source line' and see if you get it to work. The idea is to have the provider take care of the clocking, which is typically, if not always, the case...
Regards,
GNT
09-08-2006 04:24 AM
Unfortunately, that doesn't work. I tried different ways - line protocol is up only with HDLC encap.
As for a Telco between routers, we have our own Digital Automatic Switching Center, that will be connected between routers. The topology:
LAN1---Cisco1---DASC---Cico2---LAN2
The're no problem with DASC. At present moment, routers are connected directly with each other.
It's interesting to note, that if I configure Controller E1 with 'Channel-group' command, all works perfectly, as with DASC, as without it. I can set encap HDLC or PPP for Serial int - that doesn't matter, files are transmited from LAN1 to LAN2 succesfully.
In any case, thank you everybody. Hope, I'll solve this trouble in the future.
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