Lenovo Flex System Fabric CN4093, Application Manual

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CN4093 Application Guide for N/OS 8.4
Configuring ETS
Consider an example consistent with that used for port ‐ based PFC configuration
(on page 314 ):
The example shown in Table 30 is only slightly different than the default
configuration shown in Figure 33 on page 316 . In this example, latency ‐ sensitive
LAN traffic (802.1p priority 5 through 6) are moved from priority group 2 to
priority group 3. This leaves Business Critical LAN traffic (802.1p priority 4) in
priority group 2 by itself. Also, a new group for network management traffic has
been assigned. Finally, the bandwidth allocation for priority groups 1, 2, and 3 are
revised.
Note:
DCBX may be configured to permit sharing or learning PFC configuration
with or from external devices. This example assumes that PFC configuration is
being performed manually. See “Data Center Bridging Capability Exchange” on
page 322 for more information on DCBX.
Table 30.
ETS Configuration
Priority Usage PGID Bandwidth
0 LAN (best effort delivery)
0 10% 1 LAN (best effort delivery)
2 LAN (best effort delivery)
3 SAN (Fibre Channel over Ethernet, with PFC) 1 20%
4 Business Critical LAN (lossless Ethernet, with
PFC)
2
30%
5 Latency ‐ sensitive LAN
3 40%
6 Latency ‐ sensitive LAN
7 Network Management (strict) 15 unlimited