Lucent Technologies 9076 User Manual

Upgrading system memory

SP Switch Router Adapter Guide - 1.4 Update 2

 

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Figure 1-2 shows the area of system memory (control board RAM) that can be expanded to 
meet site requirements. Memory upgrades are made in 128MB increments up to 512MB.     

This chart provides general guidelines for memory required in different routing environments. 
Although the figures assume BGP peers with 50K route entries, additional memory may be 
required for higher average numbers of routes per BGP peer.           

If the SP Switch Router is to support dynamic routing or ATMP home agents and mobile 
nodes, upgrade to at least 256MB. In environments where large numbers of routes are 
advertised, upgrade to 512MB.     

128MB RAM

32MB

 8-12MB

84MB

- system software

- config files

- GateD binary

- route tables

- kernel runs
- GateD runs 

= expandable area of RAM

(fixed size)

(fixed size)

- ATMP tunnels

Memory

size and

organization

256MB

- log files

212MB

340MB

468MB

RAM

--> 384MB

RAM

--> 512MB

RAM

expandable to   -->

Static routing:
(in high-performance  
environment)

128MB

84MB

150K

Typical 
number: 
35,800

    0

Small POP

256MB

212MB

150K

Typical 
number: 
199,000

    3

Medium POP /
ISP backbone

384MB

340MB

150K

Typical 
number: 
362,000

    9

Large POP /
Exchange point /
Route reflection server

512MB

468MB

150K

Typical 
number: 
521,000

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