It is recommended that default values of the Path Cost parameter for each
Bridge Port be based on the val-ues shown in Table 8-5, the values being
chosen according to the speed of the LAN segment to which each Port is attached.
NOTE - The values shown in Table 8-5 apply to both full duplex and half duplex
operation. The intent of the recom-mended values and ranges shown is to minimize
the number of Bridges in which path costs need to be managed in order to exert
control over the topology of the Bridged LAN.
[...]
If the value of Path Cost can be set by management, the Bridge shall have
the capability to usethe full range of values in the parameter ranges
specified in Table 8-5, with a granularity of 1.
Table 8-5 Path Cost Parameter Values
Parameter Link Speed Recommended value Recommended range Range
Path Cost 4 Mb/s 250 100-1000 1-65535
Path Cost 10 Mb/s 100 50- 600 1-65535
Path Cost 16 Mb/s 62 40- 400 1-65535
Path Cost 100 Mb/s 19 10- 60 1-65535
Path Cost 1 Gb/s 4 3- 10 1-65535
Path Cost 10 Gb/s 2 1- 5 1-65535
rgs Reinhard
Anurag Aggarwal, Noida wrote:
Hi All,
Has anybody worked on the br_initial_port_cost() interface and
updated it to handle ethernet network interfaces with data rate other than 10Mbps. Also, I
want
to also update it so that it can set suitable initial port cost for a token
ring
and wireless interface. Can anyone help me out with this?
Regards,
Anurag Agarwal
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