We have the 6148-GE-TX cards in our 6513 and a recent conversation with a Cisco tech made me learn that these cards are oversubscription linecards. Buffers are shared among 8 ports and it is recommended to spread high end servers out and try to keep them off the same buffer. Does anyone have any insight on this? Should I follow these guidelines of not having high end servers sitting next to each other on the switch? What about flow control? Should I set this to send on and receive on, after making sure the server side setting is that same as well?
We're having the same issue with a 48 port line card for our 4507R. I opened a call with TAC because we are seeing a lot of Rx-No-Pkt-Buff errors. These errors only seem to increment during our nightly backups.
The Cisco Engineer told us the same thing, that the 8 port groups share a common ASIC, so only plug a server in every 8 ports. I enquired about flow control as well, and here was the Engineers response
"Basically if you enable flow control will be a workaround but still I don?t suggest doing it since the device or blade that will be doing the flow control will be flooding its buffers and will start having the same issues"
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
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In this session you can learn more about Layer 3 multicast and the best
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