I received prices for upgrading RAM memory in both a Cisco 7000
and Cisco 7500. Ouch!
My question is: the 7000 appears to accept standard 30pin SIMMs
while the 7500 accepts 72pin SIMMs. Since I can purchase lifetime memory
(60ns, true parity) for orders of magnatiude less, why shouldn't I? Has
anyone really tried this? Other than Cisco claiming that future problems
are related to the non-Cisco memory I installed, what problems might I
encounter? Are there less-expensive "Cisco certified" memory dealers?
Thanks.
I received prices for upgrading RAM memory in both a Cisco 7000
and Cisco 7500. Ouch!
My question is: the 7000 appears to accept standard 30pin SIMMs
while the 7500 accepts 72pin SIMMs. Since I can purchase lifetime memory
(60ns, true parity) for orders of magnatiude less, why shouldn't I? Has
anyone really tried this? Other than Cisco claiming that future problems
are related to the non-Cisco memory I installed, what problems might I
encounter? Are there less-expensive "Cisco certified" memory dealers?
You sure can, most providers upgrade the memory on their ciscos with 3rd
party RAM, the cisco stuff just cost to much. I dont know of "Cisco
certified" memory dealers, but just buying decent RAM from any good vender
should be fine.
Thanks.
<>
Nathan Stratton Telecom & ISP Consulting
www.robotics.net nathan@robotics.net
Here's some approved suppliers of memory. Maybe this will give you a head
start.
[snip]
Question: May I have the Approved Vendor List (AVL) of 32MB DRAM SIMM
manufacturers for the RSP2?
Answer:
MEM-RSP-32M=
RSP1/2 DRAM; 32MB Qty 2 IC,DRAM, 4Mx36, 60ns, SIM72
Part Number Manufacturer Manufacturer # Status Approved
----------- ------------ -------------- ------ --------
15-1508-01 SAMSUNG KMM5364100-6 Obso Approved
15-1508-01 HITACHI HB56D436SBR-6 Qual Approved
15-1508-01 HYUNDAI HYM536410M-60 Qual Approved
15-1508-01 MITSUBIS MH4M36BNXJ-6 Qual Approved
15-1508-01 NEC MC-424000A36B Qual Approved
15-1508-01 SAMSUNG KMM5364103AK- Qual Approved
15-1508-01 TI TM497MBK36Q-6 Qual Approved
Requirements: Bank1 must be greater or equal to bank2.
Other products using same SIMM:
4500 MEM-NP16S-P
4500 MEM-NP32M-P
4700 MEM-NP16S-P
4700 MEM-NP32M-P
4500-M MEM-NP16S-P
4500-M MEM-NP32M-P
CIP MEM-CIP-32M
LS MEM-ASP-32M
[snip]
call up TAC, and get the "AVL list - Authorized Vendor List" for your
router.
A quick search for AVL on the main site at cisco returned a few
interesting pages:
"don't do this, we're not responsible, etc." at
http://www.cisco.com/warp/public/770/10.html
"RAM for RSP or VIP cards" at
http://www.cisco.com/warp/public/770/40.html
which has links to some great pictures at
http://www.cisco.com/warp/public/770/compare.gif and
http://www.cisco.com/warp/public/770/ruler.gif
some of the other links talk about the AVL for other products as
well.
have fun,
rob
==>You sure can, most providers upgrade the memory on their ciscos with 3rd
==>party RAM, the cisco stuff just cost to much. I dont know of "Cisco
==>certified" memory dealers, but just buying decent RAM from any good vender
==>should be fine.
"Decent RAM" does *not* cut it--you need *good* RAM from a good vendor.
Be aware that this recommendation is not complete without the caveat
that Cisco will not support your processor card if you stick
unapproved third-party RAM in it. It's very important to use QUALITY
memory in the box.
With that said, Cisco does have an AVL (authorized vendor list) for
third-party memory. Kingston carries this, and will even cross-ref
the Cisco part numbers for you.
/cah
==>You sure can, most providers upgrade the memory on their ciscos with 3rd
==>party RAM, the cisco stuff just cost to much. I dont know of "Cisco
==>certified" memory dealers, but just buying decent RAM from any good vender
==>should be fine.
"Decent RAM" does *not* cut it--you need *good* RAM from a good vendor.
Sorry let me change my above "decent RAM from any good vender" to "good
RAM from any decent vendor." I was not aware that was such a big
difference between decent and good RAM. Are decent vendors ok, or do
they need to be good vendors like the good RAM? 
Be aware that this recommendation is not complete without the caveat
that Cisco will not support your processor card if you stick
unapproved third-party RAM in it. It's very important to use QUALITY
memory in the box.
True. I also don't recommend you broadcasting to Cisco that you are doing
this.
With that said, Cisco does have an AVL (authorized vendor list) for
third-party memory. Kingston carries this, and will even cross-ref
the Cisco part numbers for you.
/cah
<>
Nathan Stratton Telecom & ISP Consulting
www.robotics.net nathan@robotics.net
==>You sure can, most providers upgrade the memory on their ciscos with 3rd
==>party RAM, the cisco stuff just cost to much. I dont know of "Cisco
==>certified" memory dealers, but just buying decent RAM from any good vender
==>should be fine.
"Decent RAM" does *not* cut it--you need *good* RAM from a good vendor.
...
Kingston carries this, and will even cross-ref
the Cisco part numbers for you.
Ciscos have a greater expectation of on-spec behaviour from RAM. lots of
really borderline stuff that works fine in the random PC clone doesn't cut
it in a Cisco.
in my experience, the Kingston stuff that cross references out to Cisco
equivalents works quite well.
richard
The only specification is true parity with tin leads. Do not use gold leads
as gold on lead = corrosion. Can't remember the speed though...
Derek Elder - CCIE 4048
US Web Corporation
Senior Engineer
delder@usweb.com
Phone - 212-548-7468 Pager - 888-232-5028
http://www.usweb.com
A Strategic Partner
for the Information Age.
