05-15-2020 09:07 AM
Hello,
Any help would be greatly appreciated. My company is changing network provider and a new Xconnect provided by the new supplier, is consistently going to DOWN DOWN when we connect to the new SM fibre. The provider end is getting ERR-DISABLE. Our new provider uses QnQ service and our connection is configured to be Switchport Trunk mode to pass our vlans across this new X connect, which then goes between buildings to our equipment at the other end (note the x connect at the other end comes up ok).
Due to Covid 19 restrictions, I cannot get to the datacentre currently to troubleshoot. Remote hands is available at the Data Center, they have performed loop tests and say these have passed. We want to cutover to this new cross connect as we are now paying for it and do not wish to pay for two circuits at once.
Our end is a Cisco 7606 router, using single mode SFP 1000m Transceiver which is operating perfectly well with the existing connection ( there has been a suggestion that this transceiver could be a mismatch with the new provision at the other end).. The provider end of the Xconnect says they have LOS across the connection to our end.
I have changed port config to disable auto negotiation as requested by our new provider. still no joy. I have shut/no shut port etc., but still no joy, STATUS AND PROTOCOL remains DOWN DOWN.
The port config is below:-
interface GigabitEthernet2/1
description WAN (Core Backbone) to XXXX. XXXX Gi0/0 via Physical Fibre Connect
switchport
switchport trunk allowed vlan 809,909,910
switchport mode trunk
mtu 9000
load-interval 30
speed nonegotiate
service-policy output PM-QOS-WAN-THW
end
Can anyone assist with providing pointers on what else to look at?
Thankyou
Solved! Go to Solution.
05-15-2020 09:49 AM
how about the new one ?
make sure new Link meet the same requirement as below :
1000BASE-LX/LH SFP for both multimode and single-mode fibers
The 1000BASE-LX/LH SFP, compatible with the IEEE 802.3z 1000BASE-LX standard, operates on standard single-mode fiber-optic link spans of up to 10 km and up to 550 m on any multimode fibers. When used over legacy multimode fiber type, the transmitter should be coupled through a mode conditioning patch cable. For details on this implementation, refer to http://www.cisco.com/en/US/prod/collateral/modules/ps5455/product_bulletin_c25-530836.html.
05-15-2020 09:26 AM - edited 05-15-2020 09:27 AM
If provider side error disable, what is the reason for error disable -you should collect the Logs and post here.
Post also show interface g 2/1 to see your SFP Model.
1. Another test you can do to confrm your port working, connect to any Local device and see if the Port-come up ( so physically all validated.
2. try to twist end patch lead (towards your device ) and test.
as shown in video :
05-15-2020 09:38 AM
05-15-2020 09:41 AM
05-15-2020 09:49 AM
how about the new one ?
make sure new Link meet the same requirement as below :
1000BASE-LX/LH SFP for both multimode and single-mode fibers
The 1000BASE-LX/LH SFP, compatible with the IEEE 802.3z 1000BASE-LX standard, operates on standard single-mode fiber-optic link spans of up to 10 km and up to 550 m on any multimode fibers. When used over legacy multimode fiber type, the transmitter should be coupled through a mode conditioning patch cable. For details on this implementation, refer to http://www.cisco.com/en/US/prod/collateral/modules/ps5455/product_bulletin_c25-530836.html.
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