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2-4
Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x
OL-23435-03
Chapter 2 Configuring Basic Interface Parameters
Information About the Basic Interface Parameters
Rate Mode
On a 32-port 10-Gigabit Ethernet module, each set of four ports can handle 10 gigabits per second (Gb/s)
of bandwidth. You can use the rate-mode parameter to dedicate that bandwidth to the first port in the set
of four ports or share the bandwidth across all four ports.
Table 2-1 identifies the ports that are grouped together to share each 10 Gb/s of bandwidth and which
port in the group can be dedicated to utilize the entire bandwidth.
Note All ports in each port group must be part of the same virtual device context (VDC). For more information
on VDCs, see the Cisco Nexus 7000 Series NX-OS Virtual Device Context Configuration Guide, Release
5.x.
Speed Mode and Duplex Mode
The speed mode and duplex mode are interrelated for each Ethernet and management interface. By
default, each of these interfaces autonegotiates its speed and duplex mode with the other interface, but
you can change these settings. If you change the settings, be sure to use the same speed and duplex mode
setting on both interfaces, or use autonegotiation for at least one of the interfaces. Table 2-2 shows the
settings that work for each type of Ethernet and management interface.
Table 2-1 Dedicated and Shared Ports
Ports Groups that
Can Share
Bandwidth
Ports that Can be
Dedicated to Each
10-Gigabit Ethernet
of Bandwidth
1, 3, 5, 7 1
2, 4, 6, 8 2
9, 11, 13, 15 9
10, 12, 14, 16 10
17, 19, 21, 23 17
18, 20, 22, 24 18
25, 27, 29, 31 25
26, 28, 30, 32 26
Table 2-2 Speed- and Duplex-Mode Settings Used for Ethernet and Management Interfaces
Module Type
Speed Mode
Setting
Duplex Mode
Setting
Operational
Speed (Mb/s)
Operational
Duplex Mode
N7K-M132XP-12
32-port 10-Gigabit Ethernet
Auto
1
Auto
1
10,000 Full
N7K-M108X2-12L
8-port 10-Gigabit Ethernet
Auto
1
Auto
1
10,000 Full