12-29-2003 10:58 PM - edited 03-02-2019 12:36 PM
Greetings Cisco Experts,
Im trying to connect two Cisco 3660 back-back using VWIC-2MFT-E1 (RJ 48 cross over)
Cisco 3660(VWIC-2MFT-E1)=====(VWIC-2MFT-E1)Cisco3660
One of the VWIC-2MFT-E1 is in the 2W slot and the other is in the 2FE-2W slot
But for some reasons both of them are not talking to each other and Im getting
A lot of slip alarms on the controllers
Following is the simple config of both routers
Router 1
controller E1 5/0
shutdown
framing NO-CRC4
clock source free-running
!
controller E1 5/1
framing NO-CRC4
clock source internal
channel-group 1 timeslots 1-31
!
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial4/0
no ip address
shutdown
!
interface Serial4/1
no ip address
shutdown
!
interface Serial4/2
no ip address
shutdown
!
interface Serial4/3
no ip address
shutdown
!
interface FastEthernet5/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet5/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial5/1:1
ip address 10.160.63.22 255.255.255.252
!
router eigrp 1
network 10.160.63.20 0.0.0.3
auto-summary
no eigrp log-neighbor-changes
!
E1 5/1 is up.
Applique type is Channelized E1 - balanced
No alarms detected.
alarm-trigger is not set
Version info Firmware: 20000922, FPGA: 15
Framing is NO-CRC4, Line Code is HDB3, Clock Source is Internal.
Current port master clock: local osc on this network module
Data in current interval (191 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
191 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
191 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Router 2 Config
controller E1 5/1
framing NO-CRC4
channel-group 1 timeslots 1-31
!
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial2/0
no ip address
shutdown
clockrate 2015232
!
interface Serial2/1
no ip address
shutdown
!
interface Serial2/2
no ip address
shutdown
!
interface Serial2/3
no ip address
shutdown
!
interface Serial5/1:1
ip address 10.160.63.21 255.255.255.252
!
router eigrp 1
network 10.160.63.20 0.0.0.3
auto-summary
no eigrp log-neighbor-changes
E1 5/1 is up.
Applique type is Channelized E1 - balanced
No alarms detected.
alarm-trigger is not set
Version info Firmware: 20000922, FPGA: 15
Framing is NO-CRC4, Line Code is HDB3, Clock Source is Line.
Current port master clock: recovered from controller 5/1
Data in current interval (868 seconds elapsed):
1 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 1 Line Err Secs, 0 Degraded Mins
1 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Thanks in Advance
aht
12-29-2003 11:07 PM
For the VWICs I think you need to configure the channel group command with the speed option specified as follows.
channel-group 1 timeslots 1-31 speed 64
This will use each DS0 channel at 64K. Default value is 56Kbps if you do not specify the speed option.
Hope that helps!
12-30-2003 09:36 PM
thisisshanky,
Thank you very much for the quick reply
Yes I already configured that as 64 but still didn't work.
In one of the manual I found that VWIC-2MFT-E1 has
built in DSU but not CSU,so I'm not sure whether
can I connect them back to back,or should I connect to it a third party CSU to give clocking to it.
Any ideas will be highly appreciated
aht
03-07-2004 02:09 AM
Hi,
By default for E1 channel speed is 64k, so that is not the problem.
I think u will have to change the clocking for one side to clock source line and the other to internal.
Also u can connect VWICs back to back, no problem
Regards
Jawwad
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide