ā11-24-2015 02:54 PM - edited ā03-08-2019 02:49 AM
Hello,
I know this might be an elementary question, but I have searched and can't find an answer for it.
I have a Cisco 4510R with 5 switching modules. Would it help my network to keep different parts of it on different modules? IE: servers on one module, clients on another module. Or is all bandwidth handled the same throughout the switch?
I have the following:
2 - WS-x4516 Supervisor V Cards
5 - WS-X4548-GB-RJ45
Thanks,
Brandon
ā11-24-2015 04:39 PM
Hi,
Look at the data sheet for your card.
http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/catalyst-4500-series-line-cards/product_data_sheet0900aecd802109ea.html
Fig 21
WS-X4548-GB-RJ45:
ā 48 ports
ā 10/100/1000 module (RJ-45)
ā Cisco IOS Software Release 12.1(19)EW or later
ā IEEE 802.3x flow control
ā Bandwidth is allocated across six 8-port groups, providing 1 Gbps per port group
ā Enterprise and commercial: designed for gigabit to the desktop
Your card is from classical (older) category.
So 6 x 8 groups that means there are 6 ASICs that each have connectivity to the chassis backplane.
IE// The ports share 6Gig of bandwidth.
The ports are broken up with 1-8 on ASIC 1, 9-16 on ASIC 2 etc etc.
So you can sse you would not want to put your servers on ports 1-5 , better to space them out accross the ASICs.
(The card is really designed for user desktop connections)
For the SUP V
http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-4500-series-switches/product_data_sheet09186a00801fcaba.html
Again this is a classical supervisor and also has 6Gig connectivity to the backplane so the 2 x 1Gig ports have ample bandwidth to operate
together at full tilt .
Hope this helps
Regards
Alex
ā11-24-2015 06:46 PM
Brandon,
It is good idea to put the servers in one module or even 2 and the put the clients in different modules.
So for example:
module 1 and 2 for servers. Modules 3,4 and 5 for clients. This way if you lose one module you don't lose all the servers.
HTH
ā11-24-2015 08:05 PM
Hello,
Please check acampbell answer for detail information about your module. I experienced slow throughput in this module. Each ASIC will drop the traffic exceeding 1G in group of 6 and dropping is not obvious to be noticed since it is done by ASIC.
If have enough port density, team your server NICs with 2 swithport to achieve 2G and leave the next 4 ports empty and then start from the next 6 group. And you can also use two different modules for teaming purpose to acheive better fault tolerance.
Masoud
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