Use the following procedure to physically replace an AMC121 CPU.
Caution
Make sure to check the DIP switch setting on the new AMC121 CPU prior to insertion. Only SW2-2 (Position 2) should be ON. All other switches should be OFF.
SW2 is a four-position, single pole DIP switch pack (see the following figure). Setting SW2-2 to OFF configures the AMC121 to receive the PCIe clock (FCLKA) from the backplane regardless of ekeying commands. Use this setting in AMC.1 R1.0 carriers.
Setting SW2-2 to ON (default) configures the AMC121 to source/receive/isolate the PCIe clock (FCLKA) based on ekeying commands in compliance with AMC.1 R2.0.
CMOS Reset and COM1 Port Redirection Switch Location
To replace an AMC121 CPU
Tip
In this example, the Carrier blade slot is 14 and the failed AMC121 CPU is in subslot 4 (bay 4 of the Carrier blade).
From the VSE CLI interface, deactivate the failed AMC121 CPU.
hardware app-blade deactivate <frame shelf slot subslot>
For example,
ha app-blade deactivate 0 0 14 4
- Confirm the deactivation of this AMC121 CPU by entering y when prompted.
From the VSE CLI interface, display the current DHCP entries for the AMCs in the given system.
netw dhcp show all where host contains sp2k
Example output for the preceding command is as follows:
host fixed-address hardware-address
------------------------------ --------------- --------------------
data-sp2k00-boot-2-io 169.254.13.1 00:C0:8C:07:CF:0F
data-sp2k00-boot-3-io 169.254.13.2 00:C0:8C:07:00:74
data-sp2k00-boot-4-cpu 169.254.13.3 00:80:50:05:0d:e2
data-sp2k01-boot-2-io 169.254.13.4 00:C0:8C:07:00:6A
data-sp2k01-boot-3-io 169.254.13.5 00:c0:8c:b4:a1:30
data-sp2k01-boot-4-cpu 169.254.13.6 00:80:50:04:d5:a2
In the preceding example output, the line with host data-sp2k00-boot-4-cpu is the entry for slot 14, and the line with host data-sp2k01-boot-4-cpu is the entry for slot 24.
Alternatively, the CLI command netw dhcp show all can be used, but this command displays all DHCP entries. This information can be useful if the host field does not contain the SP2K substring.
Obtain the current DHCP settings for the faulty CPU by using the following command and make a note of the output.
For example, if the faulty CPU is slot24, which has a host label data-sp2k01-boot-4-cpu, then enter the following command:
cli> netw dhcp show data-sp2k01-boot-4-cpu d
Make note of the output information.
Example output for the preceding command is as follows:
host = data-sp2k01-boot-4-cpu
fixed-address = 169.254.13.6
hardware-address = 00:80:50:05:2f:5d
filename = NULL_OPENSLOT_KERNEL
nfs-location = NULL_OPENSLOT_FILE_LOCATION
nfs-server = 169.254.8.104
Delete the entry for the faulty AMC121 CPU by entering the following command:
For example,
cli> netw dhcp delete data-sp2k01-boot-4-cpu
From the VSE CLI, add a new DHCP entry for the replacement AMC121 CPU by entering the following:
The following command is one line.
netw dhcp add <host> <mac> <fixed-address> NULL_OPENSLOT_KERNEL NULL_OPENSLOT_FILE_LOCATION <nfs-server>
Use the information from step 4 to complete the command, with the exception of the MAC address which should now be that of the replacement AMC 121 CPU. (See Step 12 in Gather Information for Generating New License Keys on a 13U System for details about determining the MAC address of the replacement AMC 121 CPU.)
For example, consider the example from step 4:
cli> netw dhcp show data-sp2k01-boot-4-cpu d
host = data-sp2k01-boot-4-cpu
fixed-address = 169.254.13.6
hardware-address = 00:80:50:04:f2:C0
filename = NULL_OPENSLOT_KERNEL
nfs-location = NULL_OPENSLOT_FILE_LOCATION
nfs-server = 169.254.8.104
If the MAC address of the replacement AMC 121 CPU is 00:80:50:04:F2:C0, then the command to add the new DHCP entry would be as follows:
cli> netw dhcp add data-sp2k01-boot-4-cpu 00:80:50:04:F2:C0 169.254.13.6 NULL_OPENSLOT_KERNEL NULL_OPENSLOT_FILE_LOCATION 169.254.8.104
To check that the new DHCP has been properly added, run the command to show the entry again. Pay extra attention to the value of the hardware-address, which should now be that of the new AMC 121 CPU.
For example,
cli> netw dhcp show data-sp2k01-boot-4-cpu d
host = data-sp2k01-boot-4-cpu
fixed-address = 169.254.13.6
hardware-address = 00:80:50:04:f2:C0
filename = NULL_OPENSLOT_KERNEL
nfs-location = NULL_OPENSLOT_FILE_LOCATION
nfs-server = 169.254.8.104
Verify the DIP switch settings on the AMC121 CPU.
Tip
Only SW2-2 (Position 2) should be ON. All other switches should be OFF.
Extract the failed AMC121 CPU from the Carrier blade if you have not done this already.
Insert the new AMC121 CPU.
From the VSE CLI, activate the new AMC121 CPU.
hardware app-blade activate <frame> <shelf> <slot> <subslot>
For example,
ha app-blade activate 0 0 14 4
Wait for the new AMC121 CPU to finish rebooting.
The MAC address labeling is on the back of the AMC121 (see the side with no heat sink). There may be one or two MAC addresses listed. The MAC address required to generate a license key has a hex value for which the last digit is higher than the lowest listed MAC address by 2.
For example, if you see a single MAC address of 00:80:50:05:0c:c2, use 00:80:50:05:0c:c4 to license. If you see two values 00:80:50:05:0c:62 and 00:80:50:05:0c:64, use 00:80:50:05:0c:64 to license.
For example:
ping <new CPU datadefault IP address>
When the ping is successful (see the following example), the CPU has likely completed booting.
Example output for the ping command is as follows:
PING 169.254.13.6 (169.254.13.6) 56(84) bytes of data.
64 bytes from 169.254.13.6: icmp_req=1 ttl=61 time=0.540 ms
64 bytes from 169.254.13.6: icmp_req=2 ttl=61 time=0.305 ms
If the ping is unsuccessful after approximately five minutes, troubleshoot the issue by verifying the following:
Bay 4 of the appropriate Carrier blade is set on the NDM to active.
Make sure that the light on the front panel of the new AMC121 CPU is green.
Make sure that the IP address used in the ping command is correct (data default value of Bay 4, as set in NDM).
If the ping test continues to fail, contact Customer Support.