Cisco 1GB Memory - 1x 1GB DIMM MEM-PRP2-1G Benutzerhandbuch
Produktcode
MEM-PRP2-1G
4
OL-17436-01
Product Overview
improved scalability, higher system memory, faster packet processing. Because PRP-3 does not support
Cisco IOS Software, the bootflash memory no longer exists in PRP-3. PRP-3 ROMMON has software
intelligence to download a Cisco IOS XR image without the support of bootflash memory.
Cisco IOS Software, the bootflash memory no longer exists in PRP-3. PRP-3 ROMMON has software
intelligence to download a Cisco IOS XR image without the support of bootflash memory.
Note
PRP-3 supports Cisco XR 124xx (10 G per slot fabric) and Cisco XR 128xx (40 G per slot fabric) Router
chassis only. PRP-3 does not support Cisco XR 120xx Router chassis (2.5-G low-speed fabric).
chassis only. PRP-3 does not support Cisco XR 120xx Router chassis (2.5-G low-speed fabric).
PRP Functions
The PRP-2 provides the following additional functions:
•
One IEEE 802.3 10/100/1000-megabits-per-second (Mbps) Ethernet port.
•
Two building integrated timing system (BITS) ports for connecting to an external clock source.
Note
BITS functionality is currently not supported.
In addition to the functionality listed for the PRP-1 and PRP-2, PRP-3 provides the following specific
functions:
functions:
•
Reduced boot time.
•
Increased overall scalability.
•
Improved memory access rates and scale.
•
Improved CPU performance through dual 1.3-GHz PPC processor cores.
•
Improved packet processing using hardware-based acceleration.
•
10-G bandwidth backplane connectivity.
•
Support for all Cisco XR 124xx and 128xx Router chassis, except low-speed fabric (2.5G).
•
New ROMMON that supports IPv4 network configuration directly.
PRP Components
The PRP-2 contains the following additional components:
•
SDRAM—Up to 4 GB of Cisco-approved synchronous dynamic random-access memory (SDRAM)
on two dual in-line memory modules (DIMMs). 1 GB of SDRAM is the default shipping
configuration. SDRAM is field replaceable only when using Cisco-approved DIMMs.
on two dual in-line memory modules (DIMMs). 1 GB of SDRAM is the default shipping
configuration. SDRAM is field replaceable only when using Cisco-approved DIMMs.
Note
Software releases prior to 12.0(30)S do not recognize more than 2 GB of SDRAM and will only
use the first 2 GB of the installed memory. This does not affect the functioning of the PRP-2, but
commands such as show version will indicate that only 2 GB of SDRAM are installed.
use the first 2 GB of the installed memory. This does not affect the functioning of the PRP-2, but
commands such as show version will indicate that only 2 GB of SDRAM are installed.
•
Hard disk drive—40-GB hard disk drive can be optionally installed on the PRP-2 board.
•
CF—1-GB compact flash disk can be optionally installed on the PRP-2 board. It also provides
option to upgrade the compact flash to 4 GB.
option to upgrade the compact flash to 4 GB.