in case of 48port modules, there are groups of 8 ports that share common bw toward backplane of switch. In case of 4506 it is 1G limit. Does this limit apply in case of traffic between ports in same group?
Let's take an example to understand this -
Assuming that you have "WS-X4448-GB-RJ45" 48 port line card.
Bandwidth is allocated across six 8-port groups, providing 1 Gbps per port group.
This means there is an ASIC per 8 GE interfaces connecting to the switch fabric over 1Gbps connectivity.
Now in order to understand how thi sis going to effect, let's consider following scenarios -
1) trafic flow betweeen port1 and port2 of same group - The traffic does not need to go through the 1Gbps pipe. NO RESTRICTION.
2) traffic flow between port1 and port2 of different group - this traffic would flow through the 1 Gbps pipe.
3) traffic flow between port1 and port2 of two different line cards on the same switch - same as scenario 2.
4) traffic flow between port1 and another switch - same as scenario 2.