Juniper Networks E-Series - Manual (Page 112)

CHAPTER 9
Maintaining E-Series Routers 9-6
Upgrading Memory on SRP Modules
This section describes how to upgrade memory on SRP modules. E-series
software releases 3.0.x and higher require at least 512 MB of memory on
each SRP module.
Note: The ERX-310 SRP module contains two SODIMM banks that use 256-MB
memory, and currently is not upgradeable.
Four main steps are involved in upgrading memory on SRP modules:
1 Check memory currently installed on the SRP module.
2 Remove the SRP module and the SODIMMs.
3
Add the new SODIMMs to the SRP module.
4
Reinstall the SRP module and verify the upgrade.
See the following sections for information on each step.
Warning: Do not insert any metal object, such as a screwdriver, or place your hand
into an open slot or the backplane when the E-series router is on. Remove jewelry
(including rings, necklaces, and watches) before working on equipment that is
connected to power lines. These actions prevent electric shock and serious burns.
Caution: When handling modules, use an antistatic wrist strap connected to the
E-series router’s ESD grounding jack, and hold modules by their edges. Do not
touch the components, pins, leads, or solder connections. These actions help to
protect modules from damage by electrostatic discharge.
Checking the Memory Installed
Before you install the new memory, issue the show hardware command
to check how much memory is installed. Each ERX-7xx/14xx model SRP
module should currently use at least 256 MB of memory. You will need
one upgrade kit for each SRP module in the system.
Depending on the upgrade you are performing, the kit will contain a
specific number of small outline dual inline memory modules
(SODIMMs).
Removing SODIMMs
After removing the SRP module from the E-series router, you may have
to remove lower-memory SODIMMs to upgrade to a higher-capacity
SRP module. The SODIMM sockets are close to the NVS card and have