08-30-2009 05:32 PM - edited 03-06-2019 07:30 AM
Greeting
Could anyone advice me that is there capability dramatic difference between module WS-X6516-GBIC and module WS-X6748-GE-TX? Of cause they are use different adapter, but how about other feature?
The reason I ask, because I current use a critical device on WS-X6516-GBIC, and there is small packet drop on output queue, if I change it to use WS-X6748-GE-TX, if it will improve?
Any comments will be appreciated
Thanks in advance
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08-30-2009 05:50 PM
The WS-X6748-GE-TX will definitely provide better performance over the WS-X6516-GBIC. It has much larger buffer, and QoS support. From the data sheet, the WS-X6748-GE-TX has 1.3MB buffer per port, while the WS-X6516-GBIC has 512KB buffer per port.
Please check out the following data sheets
HTH,
jerry
08-30-2009 05:50 PM
The WS-X6748-GE-TX will definitely provide better performance over the WS-X6516-GBIC. It has much larger buffer, and QoS support. From the data sheet, the WS-X6748-GE-TX has 1.3MB buffer per port, while the WS-X6516-GBIC has 512KB buffer per port.
Please check out the following data sheets
HTH,
jerry
08-31-2009 04:37 AM
Jerry's references might note this, but some important differences between the two module cards, the 6516-GBIC has dual CEF256 (8 GB) fabric connection, the 6748 (TX or SFP) has dual CEF720 (20 GB) fabric connections. The 6748's optional DFC supports a higher forwarding rate (48 Mpps vs. 24 Mpps) than the 6516-GBIC optional DFC.
As to your question about packet drops, depends on the nature of the drops. Drops, in theory, is normal with any oversubscription. Deeper queues/buffers might absorb transient oversubscription with less drops.
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