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Supervisor Memory Requirements

With either a native Cisco IOS Software or hybrid Cisco IOS Software model, the system memory

requirements are primarily determined by the network environment, including how many Layer 3

routes or Cisco Express Forwarding prefixes will be used by the system. The release notes for

individual Cisco IOS Software releases contain the minimum memory required for the supported

supervisor engines and feature sets. Cisco requires that same amounts of memory be installed for

both the switch processor and the route processor. Table 3 provides a summary of the minimum

memory requirements for Cisco IOS Software Release 12.2SX running on supported supervisor

engines.

Table 3. Cisco IOS Software 12.2SX Minimum System Memory Requirements by Supervisor Engine

Cisco Catalyst 6500

Series Supervisor

Engine 720-3BXL

Cisco Catalyst 6500

Series Supervisor

Engine 720-3B

Cisco Catalyst 6500

Supervisor Engine 32

Cisco Catalyst 6500

Series Supervisor

Engine 2

System

Memory

(DRAM)

●

Switch processor =

1 GB

●

Route processor =

1GB

●

Switch processor =

512 MB

●

Route processor =

512 MB

(No memory upgrades

are offered for the

PFC3B; however the

PFC3BXL upgrade

includes memory to

upgrade both the

switch processor and

route processor to 1GB

●

Switch processor =

256 MB

●

Route processor =

256 MB for IP Base

SSH LAN ONLY

image (does not

apply for IP BASE

LAN ONLY

MODULAR image),

●

Switch processor =

512 MB

●

Route processor =

512 MB for all other

images

(Beginning in May 2006

all Cisco Catalyst 6500

Supervisor Engine 32

units began shipping

with 512 MB system

memory)

●

Switch processor =

256 MB

●

Route processor =

256 MB

(Any Cisco Catalyst

6500 Series Supervisor

Engine 2 must be

running 256 MB system

memory to support a

12.2SX software

release)

Verifying System Memory

Use the console command show version to display the amount of system DRAM installed on an

existing system.

Cisco Catalyst OS

Figure 4 shows the partial output from the show version console command for a Cisco Catalyst

6500 Supervisor Engine 32 10 Gigabit Ethernet system configured with the default 256 MB of

system memory. Because this a Cisco Catalyst OS implementation, which only runs on the switch

processor, the memory statistics are for the switch processor. To see the memory statistics on the

route processor in a hybrid software model, use the Cisco IOS Software console command show

version from the MSFC console, as described below.

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