I am in process of ordering a 6 port GBIC modlue or 18 port.I am confused about one thing in cisco docs it says 6 gbic module will have all the ports wire speed and on 18 gbic module its says 2 ports will have wire speed and 16 will have a ratio of 4:1.What is this ratio.
is it like this that 4 ports are going to have 1 gb bandwidth shared which equal to total speed of the module to 6gb.plz explian.
It means that the port can give 1Gbps speed with no contention. So it can run at it's full capability and it will have access to the switch fabric at a full 1Gbps whereas a port within one of the 4:1 groups is contended in that it has to compete with three other ports so if all 4 ports were transmitting at same time each port could not reach it's 1Gbps speed.
Hope i've explained that clearly