[c-nsp] 6509 with ws-x6148 or ws-x6348?

[Pete Templin]

wellknown at gmx.net wrote:

> Can anyone explain the difference between the cards ws-x6148 and
> ws-x6348? Both are relatively cheap available on the bay. I read
> about some problems with the x-6348 on the list. Seems that they have
> same buffer sizes and I am not able to find a difference.

I have some ws-x6248 (48 port 10/100 copper FE), some ws-x6348 (48 port 
10/100 copper FE), and some ws-x6148A (48 port 10/100/1000 copper GE). 
Admittedly I don't have any 6148 10/100 cards as a direct comparison.

We've now declared the 6348s as infrastructure only, due to packet loss. 
  In an application where we're using it for customers rate-limited to 
10Mbps (or lower) or committing to 10Mbps (or lower), it's theoretically 
<10% loaded and still dropping packets.  6248s were already on their way 
out, due to less (if any) QoS support.

The 6148As are "wiring closet" cards, limited to 6Gbps total and 1Gbps 
per 8 ports.  I believe this also precludes any >1Gbps EtherChannels, 
but we haven't gone there.  For our uses, a SIGNIFICANT boost over the 
6348s.

pt