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Community Member

Does this 2851 can give lots of RAM memory? How about flash?

Hi,

I am not sure on whether the 2851 below comes with 256MB or 1GB of RAM? That

WAAS module has 1GB, but is that considered somehow a complement to RAM memory?

I want to make sure I will order a router robust and which can sustant IOS

versions for year to come.

Please suggest the amount of RAM and flash memory people are ordering

to make sure I buy a scalable router.

1 CISCO2851-SEC/K9 2851 Security Bundle,Adv Security,64F/256D 1

2 CAB-AC Power Cord,110V 1

3 S28NUASK9B-12409T Cisco 2800 ASK9-AISK9 FEAT SET FACTORY UPG FOR BUNDLES 1

4 NME-WAE-502-K9 WAAS Network Module For 2800, 3800 ISR - 1GB RAM, 120GB HDD 1

5 SF-WAAS-4.0-NM-K9 Cisco WAAS 4.0 NM SW image (separate license required) 1

6 WAAS-ENT-NM Cisco WAAS Enterprise License for 1 NME-WAE-502-K9 1

7 WIC-1DSU-T1-V2 Updated 1-Port T1/Fractional T1 DSU/CSU WAN Interface Card 1

8 ROUTER-SDM Device manager for routers 1

9 PWR-2821-51-AC Cisco 2821/51 AC power supply 1

10 MEM2800-256D-INC 256MB DDR DRAM Memory factory default for the Cisco 2800 1

11 MEM2800-64CF-INC 64MB CF default for Cisco 2800 Series 1

12 PWR675-AC-RPS-N1= 675W Redundant Power Supply with 1 connector cable 1

13 CAB-AC Power Cord,110V 1

1 ACCEPTED SOLUTION

Accepted Solutions

Re: Does this 2851 can give lots of RAM memory? How about flash?

The Sec9 bundle comes with default 256MB RAM and 64MB flash.

However if you want to increase it here are the options avaialble

MEM2851-512D= 512MB DIMM DDR DRAM for the Cisco 2851

MEM2851-256U512D 256 to 512MB DDR DRAM factory upgrade for the Cisco 2851

MEM2851-256U768D 256 to 768MB DDR DRAM factory upgrade for the Cisco 2851

MEM2851-256U1024D 256 to 1024MB DDR DRAM factory upgrade for Cisco 2851

MEM2800-64U128CF 64 to 128 MB CF Factory Upgrade for Cisco 2800 Series

MEM2800-64U256CF 64 to 256 MB CF Factory Upgrade for Cisco 2800 Series

HTH

Narayan

6 REPLIES
Hall of Fame Super Bronze

Re: Does this 2851 can give lots of RAM memory? How about flash?

The router comes with 256MB Ram and 64MB Flash.

The WAAS is a WAN optimization and application accelerator http://www.cisco.com/en/US/products/ps6474/products_data_sheet0900aecd8058218c.html

HTH,

Re: Does this 2851 can give lots of RAM memory? How about flash?

The Sec9 bundle comes with default 256MB RAM and 64MB flash.

However if you want to increase it here are the options avaialble

MEM2851-512D= 512MB DIMM DDR DRAM for the Cisco 2851

MEM2851-256U512D 256 to 512MB DDR DRAM factory upgrade for the Cisco 2851

MEM2851-256U768D 256 to 768MB DDR DRAM factory upgrade for the Cisco 2851

MEM2851-256U1024D 256 to 1024MB DDR DRAM factory upgrade for Cisco 2851

MEM2800-64U128CF 64 to 128 MB CF Factory Upgrade for Cisco 2800 Series

MEM2800-64U256CF 64 to 256 MB CF Factory Upgrade for Cisco 2800 Series

HTH

Narayan

Hall of Fame Super Gold

Re: Does this 2851 can give lots of RAM memory? How about flash?

Are you buying a 2851 for just 1 T1 link ?

Seems excessive ...

Community Member

Re: Does this 2851 can give lots of RAM memory? How about flash?

Initially T1 MPLS. Later I could put DS-3 there.

Re: Does this 2851 can give lots of RAM memory? How about flash?

If you plan to put a DS3 at a later stage i would suggest looking into the 3800 series instead of the 2800.

The 2800 series do not support full rate T3/E3 but only subrate

http://www.cisco.com/en/US/products/hw/modules/ps2797/products_data_sheet09186a008010fba2.html

HTH

Narayan

Hall of Fame Super Gold

Re: Does this 2851 can give lots of RAM memory? How about flash?

I wouldn'be too worried about T3 performances on a 2851. Attaching here the performance sheet that Narayan has previously posted.

Go over the numbers and use common sense. Remember that certain tables have a 'sales sense' while technical analysis and experience can reveal otherwise.

For example we learn that a 2851 is rated for 220 Kpps, while a 3660 only 120. Still, in the NM-T3/E3 datasheet, the T3 module is "full rate" for the 3660 while only "sub-rate" for the 2800 series that is strangely grouped together, while we know that each model has different performances.

And yes, I've been buying and selling Cisco router for a looong time :)

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