Datasheet

83
OL-17436-01
Additional Configuration and Maintenance Tasks
Figure 26 Handling a DIMM
Caution When inserting DIMMs into a socket, apply firm, but not excessive, pressure. If you damage a DIMM
socket, you must return the line card for repair.
Step 6 Gently insert the DIMM into the socket and push until the DIMM snaps into place and the release lever
is flush against the side of the socket.
Step 7 Verify that the release lever is flush against the side of the socket. If it is not, the DIMM might not be
seated properly. On a socket with dual release levers, both levers should be flush against the sides of the
DIMM.
If the module appears misaligned, carefully remove it and reseat it, ensuring that the release lever is flush
against the side of the DIMM socket.
Step 8 Repeat Step 3 through Step 7 to install any remaining DIMMs for your memory configuration.
Checking the DIMM Installation
After you install new DIMMs and replace the PRP in the router, the router reinitializes the PRP and
detects the memory change as part of the reinitialization cycle. The time required for the router to
initialize can vary with different router configurations and memory configurations.
If the PRP or the system does not reinitialize properly after you upgrade memory, or if the console
terminal displays a checksum or memory error, verify the following:
Step 1 Check the packet memory DIMMs to verify that the type, size, and speed of the DIMMs are compatible
with the PRP. DIMMs must operate at 60 ns or faster. The speed of the DIMM is printed along one of
its edges.
Step 2 Ensure that the DIMMs are installed correctly on the PRP. Check the alignment of the DIMMs by
looking at them across the horizontal plane of the card. The DIMMs should be aligned at the same angle
and be fully inserted into their respective sockets. If a DIMM is not correctly aligned, remove it and
reinsert it.
H6507
Key