[c-nsp] Line Protocol going down sporadically

[Mike Glass]

Hey Friends,
See if you can help me on this mess.
 
I have a 108MB wireless link between two buildings, this is in the 4.9 GHz Range used for public safety.
The link seems fine as I can copy 7 gig file without any issue, however at some point the link will loose connectivity out of the blue with no loss of radio signal, I have already replaced the radio's so not a radio hardware issue, I can have the link up without passing traffic for two months and no loss of radio communication whatsoever.
 
Here is what I have been seeing on the switch side when allowing traffic to pass, it will run for most of the day, then bam it does this.
 
Apr 25 13:15:46: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet
0/19, changed state to down
Apr 25 13:15:50: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet
0/19, changed state to up
This happened the night I changed the OSPF cost to use this link, it seem to happen the same time our callmanger backed up, but data was being backed up through a different link.
 
Could this be a switch, wire, bandwidth, or configuration issue? We do run VOIP over this link that is my only issue is that the phone re-register when this happens, and customers not happy.
 
 
Here is my configuration on both ends.
 
 
--------------------------------------------------------------------------------------------
========================
Watewater Layer 3 Switch
========================
 
WS-C3560X-24P      15.0(1)SE             C3560E-UNIVERSALK9-M
Gi0/19    PTP Redline link to Clinic connected    trunk      a-full  a-100 10/100/1000BaseTX
 
wastewater-switch1#sh vlan id 965
VLAN Name          Ports
---- ---------------------------------------------------
965  WWTP-Clinic    Gi0/1-2821 Router, Gi0/15-DW MRTP, Gi0/16-DW CCB, Gi0/18-RL Pointing East, Gi0/19-PTP Clinic, Gi0/20-PTP EHPD
                    Gi0/21-PTP ST.PETES, Gi0/22-PTP LANDFILL, Gi0/24-LCC-WWT-UCS1, Gi1/1-WWWU, Gi1/2-WW ADMIN, Gi1/3-WW NONPOE
 
interface GigabitEthernet0/19
 description PTP Redline link to Clinic
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 1-665,667-1005
 switchport mode trunk
 srr-queue bandwidth share 1 30 35 5
 priority-queue out
 mls qos trust cos
 auto qos trust
 
interface Vlan965
 description Point to Point to Clinic
 bandwidth 108000
 ip address 172.18.63.74 255.255.255.252
 ip helper-address 172.18.4.7
 ip directed-broadcast
 ip ospf network non-broadcast
 ip ospf cost 500
!
 

--------------------------------------------------------------------------------------------
 
=============
Clinic Switch
=============
 
WS-C3560-48PS      12.2(46)SE            C3560-IPBASEK9-M
Fa0/44    PTP Redline Link t connected    trunk      a-full  a-100 10/100BaseTX
 
clinic-switch3#sh vlan id 965
VLAN Name            Ports
---- ----------------------- ---------------------------
965  Clinic-WWTP     Fa0/42-PTP East side Fire, Fa0/44-PTP WWTP, Gi0/1-Trunk to POE Switch, Gi0/4-Trunk to 4402 Controller
 
interface FastEthernet0/44
 description PTP Redline Link to WWTP
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 1-665,667-1005
 switchport mode trunk
 srr-queue bandwidth share 10 10 60 20
 priority-queue out
 mls qos trust cos
 auto qos voip trust
 spanning-tree portfast
 

=============
Clinic Router
=============
2821 Software (C2800NM-IPVOICEK9-M), Version 12.4(24)T
interface GigabitEthernet0/0.963
 description Point to Point to East Side Fire
 bandwidth 36000
 encapsulation dot1Q 963
 ip address 172.18.63.37 255.255.255.252
 ip directed-broadcast
 ip ospf network non-broadcast
 ip ospf cost 500
!
interface GigabitEthernet0/0.965
 description Point to Point to WWTP
 bandwidth 108000
 encapsulation dot1Q 965
 ip address 172.18.63.73 255.255.255.252
 ip helper-address 172.18.4.7
 ip directed-broadcast
 ip ospf network non-broadcast
 ip ospf cost 20
!
 
clinic-router#sh vlans | begin 965
Virtual LAN ID:  965 (IEEE 802.1Q Encapsulation)
 
   vLAN Trunk Interface:   GigabitEthernet0/0.965
 
   Protocols Configured:   Address:              Received:        Transmitted:
           IP              172.18.63.73        3719119752          3331110237
        Other                                           0               51554
 
   3719119872 packets, 2337680099611 bytes input
   3331161791 packets, 1000896233672 bytes output
 
-----------------------------------------------------------------------------------------------
 
Thanks
Mike