HP ProCurve 9304M Installation And Configuration Manual page 92

Installation and Basic Configuration Guide
24-port 10/100 Mbps
4-port 1000 Mbps
8-port 1000 Mbps
The device assigns the forwarding modules to TSPs in numerical order (always starting with TSP 1) and
beginning with the module with the highest weight and working down to the module with the lowest weight.
The device assigns a forwarding module's ports to only one TSP. A single module's ports are never distributed
across multiple TSPs.
The allocations determine the TSP that will process traffic received on a forwarding module's ports. For example,
if an 8-port Gigabit module in slot 3 is allocated to TSP 1, then that CPU processes all the traffic received on the
module's ports.
NOTE: If you hot-swap a module into or out of the chassis after the allocations have taken place at startup, the
device does not re-allocate modules to even out the load sharing. Instead, the device allocates the module you
insert to the TSP that currently has the least weight allocated to it. If you remove a module, the device subtracts
the module's weight from the TSP to which the module was allocated.
Here are some examples of load sharing allocations for various configurations. Notice that for a four-slot chassis,
each forwarding module is allocated to its own TSP. The module's weights determine the TSPs to which they are
allocated. For a chassis with more than four slots, some TSPs are allocated more than one module.
Nonetheless, the allocations are based on the forwarding modules' weights and provide the most even distribution
possible.
Example Configuration 1
Table 4.2 shows a module configuration and the resulting TSP allocations for a four-slot chassis. Notice that since
the T-Flow does not have any forwarding ports, the module does not need to be allocated to a TSP.
Slot
1
2
3
4
Figure 4.3 shows the TSP allocations for this configuration.
4 - 4
Table 4.1: Forwarding Module Weights
Total Mbps
Module type
capacity
2400
4000
8000
Table 4.2: Example Configuration 1
Module type
T-Flow
24-port 10/100
8-port Gigabit
24-port 10/100
Weight
24
40
80
Order
Weight
allocated
n/a n/a
24 2
80 1
24 3
TSP
n/a
TSP 2
TSP 1
TSP 3