I have an issue with my network continuously dropping calls or phones freezing. Its states CM down Features Disabled. We lose calls, phones are freezing intermittently.
Here's the hardware setup: MCS-7828-H3
Platform Type 7828H3
Active OS 18.104.22.16800-10
RTMT does show phones unregistering, but I am not seeing any devices lose connectivity except for some minimal packet loss to the Call Manager. No other errors reported in syslog for any Cisco device For example, pings sent to all major network devices have 0 packets lost over the weekend, but 250 out of 20,000 pings to the Call Manager server are lost. I have replaced cabling, patch cords and moved switch ports with no resolution.
CPU has never gone above 24%
Virtual Memory never above 30%
Active and Inactive partitions are at 15% disk space.
We have a 2nd NIC on this server but i'm unable to configure this 2nd NIC as a standalone connection for the Call Manager server, only as a failover for the 1st NIC. Does anyone know how to configure this 2nd NIC to host all IP services for these servers? Is there a way to replace the NIC on these servers (not onsite and haven't opened this box up yet) or do I have to replace the entire server?
Anyone have any other suggestions on where to take my troubleshooting?
Thanks for any and all advice!
Please see below, Your right in thinking this could be a defective nic, cable, I would also suggest looking into your STP configuration.
Error Message RTD-1-ADDR_FLAP [chars] relearning [dec] addrs per min
Explanation Normally, MAC addresses are learned once on a port. Occasionally, when a switched network reconfigures, due to either manual or STP reconfiguration, addresses learned on one port are relearned on a different port. However, if there is a port anywhere in the switched domain that is looped back to itself, addresses will jump back and forth between the real port and the port that is in the path to the looped back port. In this message, [chars] is the interface, and [dec] is the number of addresses being learnt.
Recommended Action Determine the real path (port) to the MAC address. Use the debug ethernet-controller addr privileged EXEC command to see the alternate path-port on which the address is being learned. Go to the switch attached to that port. Note that the show cdp neighbors command is useful in determining the next switch. Repeat this procedure until the port is found that is receiving what it is transmitting, and remove that port from the network.
Error Message RTD-1-LINK_FLAP [chars] link down/up [dec] times per min
Explanation This message means that an excessive number of link down-up events has been noticed on this interface: [chars] is the interface, and [dec] is the number of times the link goes up and down. This might be the result of reconfiguring the port, or it might mean a faulty device at the other end of the connection.
Recommended Action If someone is reconfiguring the interface or device at the other side of the interface, ignore this message. However, if no one is manipulating the interface or device at the other end of the interface, it is likely that the Ethernet transceiver at one end of the link is faulty and should be replaced.