Installation, Upgrade, and Migration Guide for Cisco Unified MeetingPlace Release 8.5
Troubleshooting the Cisco Unified MeetingPlace 3500 Series Media Server
Downloads: This chapterpdf (PDF - 127.0KB) | Feedback

Troubleshooting Problems with the Hardware Media Server

Table Of Contents

Troubleshooting Problems with the Hardware Media Server

About Front Panel LED Issues on the Hardware Media Server

About Ethernet Settings for the Hardware Media Server

Misconfigured Ethernet Ports

"MCU blade is DOWN" Alarm

Network is Running at 10 Mbps Rather Than 1 Gbps


Troubleshooting Problems with the Hardware Media Server


Release 8.5
Revised: September 19, 2011 3:26 pm

This section covers problems you might encounter when configuring, operating, and managing the Hardware Media Server and provides suggested actions you can perform to solve the problems.

About Front Panel LED Issues on the Hardware Media Server

About Ethernet Settings for the Hardware Media Server

Misconfigured Ethernet Ports

Network is Running at 10 Mbps Rather Than 1 Gbps

About Front Panel LED Issues on the Hardware Media Server

This section describes what to do if the LEDs on the front panel of the Hardware Media Server are off at all times, including during the power off and power on cycle.

Table 1 Resolving Front Panel LED Issues

Possible Causes
Verification Steps

Power supply problem

Make sure that the power supply LED is green.

Check the AC cable and fuse.

The blades are not inserted correctly in the Cisco Unified MeetingPlace 3500 Series Media Server chassis, or a back plane pin is bent.

Open the telecom latch screws and extract the blade from its slot.

Verify that there are no bent pins on the back plane (using a flashlight, if necessary).

Re-insert the blade carefully closing the latches.


About Ethernet Settings for the Hardware Media Server

We recommend the following Ethernet port settings:

Audio Blade
Ethernet Switch Port
Result

Auto-negotiate

Auto-negotiate

1000/Full


Video Blade
Ethernet Switch Port
Result

Auto-negotiate

Auto-negotiate

1000/Full


Application Server
Ethernet Switch Port
Result

Auto-negotiate

Auto-negotiate

1000 Mbps or 100/Full

1000 Mbps

1000 Mbps

1000 Mbps

100/Full

100/Full

100/Full


We do not recommend the following:

Setting one device to auto-negotiate and setting the other device to a fixed configuration


Caution Setting one device to auto-negotiate and the other device to a fixed configuration will often result in negotiation failure, where one side thinks it has a full duplex link and the other side thinks it has a half duplex link. This will result in intermittent non-specific failures which get progressively worse as the load on the system increases and can result in a complete service outage.

Using 10 Mbps Ethernet

Using half duplex Ethernet at any speed

Using 10/100Mbps for MCU and EMP, nor any hard set values (MCU and EMP tested and certified only on Auto/Auto setting connected to 1Gb switchports)

Misconfigured Ethernet Ports

Problem   An Ethernet port is misconfigured. Symptoms include the following:

Lost audio or video on a call

Dropped calls

Intermittent or no response to ping

On an Audio Blade or Video Blade, intermittent failure to sign in using Telnet or web interface

On the Application Server, intermittent failure to access the command line using SSH, or the Administration Center

The following alarms:

180825 MCU blade is DOWN

180826 EMP blade is DOWN

180812 System has no audio capacity

180813 System has no video capacity

180810 System audio capacity is N ports; licensed for N

180811 System video capacity is N ports; licensed for N

Solution   Change the address settings by following the procedure in Changing Address Settings for the Hardware Media Server in the Configuring the Audio and Video Blades for the Hardware Media Server module.

Solution   Use the modifyTargetDevice command on the console of the blade to change the connection settings to match with that of the switch. See the Setting Initial Values for the Hardware Media Server module for information about using this command.

"MCU blade is DOWN" Alarm

Problem   If an MCU blade (for example, blade ABC) goes down, the system generates an "MCU blade is DOWN:<ABC_IP_Address>" alarm with the blade's IP address.

Solution   Clear this alarm. Sign in to the CLI of the Application Server and enter alarm. Note the reference number (REFNO) for the "MCU blade is DOWN:<ABC_IP_Address>" alarm and enter clearalarm <REFNO>. Alternately, you can clear all alarms by entering clearalarm all.

If, after running clearalarm, another MCU blade (blade XYZ) goes down, then you will see a new alarm, "MCU blade is down:<XYZ_IP_Address>.

If, however, another blade (for example, blade XYZ) goes down while there is an existing "MCU blade is DOWN:<ABC_IP_Address>" alarm, then you will see the "MCU blade is DOWN:<ABC_IP_Address>" alarm incremented by one. You will not see a new, separate alarm, for the XYZ blade.

If this happens, enter viewexlog | grep 180825. This command returns a listing of the "MCU blade is DOWN" alarms with the timestamps and the IP addresses.

$[mpxadmin@server ~]$ viewexlog | grep 180825 
02/08 11:39:18.76 MIN 0x180825 MCU blade is DOWN: <IP_Address> 
02/08 11:33:13.58 MIN 0x180825 MCU blade is DOWN: <IP_Address> 
02/07 17:37:02.58 MIN 0x180825 MCU blade is DOWN: <IP_Address> 
[mpxadmin@server ~]$ 

This command is useful if the alarm is recent and the events in viewexlog have not been overwritten (by newer events).

Network is Running at 10 Mbps Rather Than 1 Gbps

Problem   Cisco UCS C-Series 210 Server (M1 or M2) network is running at 10 Mbps rather than the supported capacity (1 Gbps).

Solution   Consider performing a firmware upgrade or downgrade.