Requested revision
Standard: | 802.1Q-2005 | Clause: | 13.37.1 |
Clause title: | Internal Path Costs |
Rationale for revision
Table 13-3 which lists internal path costs for various link
speeds does not include a path cost for 40 Gbps links.
Proposed text
Add a row to Table 13-3 with the following entries for the
corresponding columns:
Link Speed: 40 Gb/s
Recommended value: 500
Recommended range: 50 - 5000
Range: 1 ? 200000000
Impact on existing networks
Existing networks will fall into one of 3 categories:
1. No 40 Gb/s links.
2. 40 Gb/s links use an internal path cost of 500.
3. 40 Gb/s links use an internal path cost other than 500.
Of these, there would be no impact for (1) and (2). For (3),
the impact would be that when newer devices that are added
to the network, the operator would either have to manually
change the default internal path cost for 40 Gb/s links of
already deployed equipment, or have a network in which
40 Gb/s links have unequal preference with respect to
RSTP and MSTP.
Originator
Name: | Anoop Ghanwani | Email: | anoop@brocade.com |
Affiliation: | Brocade | ||
Submitted: | 2011-04-07 |