Line Cards options for a 4507

Answered Question
Nov 13th, 2009
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Hi all,


I need some info on line cards for a 4507. I have dual Sup IV's. I need 24 fiber gig ports. My dilemma is whether I should use a 4418 or 4 4306 line cards. If I use the 4418 is there a backplane throughput issues? Any info would be greatly appreciated.



Thanks

Correct Answer by Jon Marshall about 7 years 7 months ago

Wayne


It totally depends on the throughput you need from each port. Bear in mind each line card has access to 6Gbps of the switch fabric with a non-E 4500 chassis.


So there is no oversubscription with the 4306 ie. each port can run at full wire rate. But with the 4418 card 2 of the ports will run at wire rate and the other 16 ports are oversubscribed 4:1. Have a look at Table 2 in this doc for details -


http://www.cisco.com/en/US/prod/collateral/modules/ps2710/ps5494/product_data_sheet0900aecd802109ea.html


Jon

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Correct Answer
Jon Marshall Fri, 11/13/2009 - 07:58
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Wayne


It totally depends on the throughput you need from each port. Bear in mind each line card has access to 6Gbps of the switch fabric with a non-E 4500 chassis.


So there is no oversubscription with the 4306 ie. each port can run at full wire rate. But with the 4418 card 2 of the ports will run at wire rate and the other 16 ports are oversubscribed 4:1. Have a look at Table 2 in this doc for details -


http://www.cisco.com/en/US/prod/collateral/modules/ps2710/ps5494/product_data_sheet0900aecd802109ea.html


Jon

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