Brocade Communications Systems VDX 8770-8 Installation Guide Page 17
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• For the 12x40 GbE line card, up to two 40GbE ports are allowed per trunk when these ports are
configured in breakout mode to provide 10GbE interfaces. Select ports from six port groups
consisting of 40GbE ports 1-2, 3-4, 5-6, and 7-8, 9-10, and 11-12.
• For the 27x40 GbE line card, 40GbE ports must be configured in breakout mode to provide 10GbE
interfaces for trunking. There are nine port groups consisting of 40GbE ports 1-3, 4-6, 7-9, 10-12,
13-15, 16-18, 19-21, 22-24, and 25-27. The following rules apply to configuring breakout mode and
trunking on ports in these groups:
‐ You must configure a port group in Performance operating mode. Breakout mode is not
supported on ports configured in Density (default) operating mode.
‐ When the port group is in Performance mode, you can only configure the first two ports in
the port group in breakout mode, since the third port in the group is disabled. Hence,
trunking is only supported on the first two ports in the port group.
Trunking two 40 GbE ports
To form an 80 Gbps trunk between two 40 GbE QSFP transceivers on a 40 GbE line card for an ISL
connection, use the following steps:
1. Configure each QSFP interface in breakout mode, as if you were connecting four separate 10GE
transceivers, then reboot the line card.
2. Use a crossover MTP or MPO 40GE (12-strand) OM3/OM4 Fibre to connect the QSFPs to each
other.
For more information on Brocade Trunking and configuring breakout mode, refer to the following:
• "Configuring SFP Breakout Mode" in the Network OS Layer 2 Switching Configuration Guide
• "Brocade Trunks" in the Network OS Administration Guide
27x40 GbE operating modes
The 27x40 GbE line card supports nine port groups of three ports each that you can configure for
Performance or Density operating modes.
• Performance mode - Because the line card is oversubscribed and cannot support the 40 Gbps line
rate on all 27 ports, you can configure Performance mode to achieve 40 Gbps rate for up to 18 ports.
When a port group is configured In Performance mode, the third port in the port group is persistently
disabled, but the remaining two ports operate at up to 40 Gbps to achieve the 80 Gbps maximum
rate for the port group. QSFP breakout mode is only supported on ports configured in Performance
mode.
• Density mode - This is the default mode for all the port groups. In this mode, all the three ports are
enabled in each group, but cannot support the 40 Gbps maximum rate. If this mode is configured on
all port groups, 27 total ports are available for use.
Configure Performance or Density mode for individual port groups using Network OS commands (refer
to the Network OS Command Reference ).
For configuring operation modes, ID numbers are assigned to each port group sequentially from port 1
through 27 as shown in the following table.
27x40 GbE line card port groups
TABLE 2
Port Group ID Port Numbers
1 1-3
Trunking two 40 GbE ports
Brocade VDX 8770-8 Hardware Installation Guide 17
53-1002564-07
- Brocade VDX 8770-8 1
- Contents 3
- Document conventions 7
- Notes, cautions, and warnings 8
- Brocade resources 9
- Document feedback 10
- Product Overview 11
- Hardware components 12
- Port side view 13
- Nonport side view 14
- Supported Line cards 15
- Breakout mode 16
- Trunking 16
- 27x40 GbE operating modes 17
- High availability 18
- Device Installation 19
- NEBS requirements 21
- Environmental requirements 25
- Chassis slots 25
- Port numbering 26
- FIGURE 4 12x40 GbE line card 27
- 48x10G-T port numbering 28
- 27x40 GbE port numbering 29
- 6x100 GbE port numbering 30
- Providing power to the device 31
- Connecting an AC power cord 32
- Connecting a DC power cord 32
- Initial Configuration 35
- Configuration tasks 36
- Changing the RBridge ID 39
- Assigning permanent passwords 39
- Configuring the IP addresses 40
- Customizing a host name 42
- Customizing a chassis name 42
- Setting the date and time 43
- Setting the time zone 44
- Verifying correct operation 46
- Backing up the configuration 47
- Connecting network devices 47
- Testing connectivity 48
- Managing cables 49
- System Monitoring 51
- 8x10 GbE line card 52
- 12x40 GbE line card 53
- 27x40 GbE line card 53
- 48x10G-T line card 55
- 6x100 GbE line card 56
- 1 Power LED 62
- 2 Status LED 62
- 1 AC power input LED (AC OK) 63
- 2 DC power output LED (DC OK) 63
- 3 Alarm LED (ALM) 63
- Introduction 69
- ESD precautions 69
- Time and items required 70
- Removing a line card 72
- Replacing a line card 73
- Removing a management module 75
- Replacing a management module 76
- Removing an AC power supply 80
- Replacing an AC power supply 81
- Removing a DC power supply 82
- Replacing a DC power supply 82
- Fan removal and replacement 83
- Replacing a fan 84
- Removing an air filter 86
- Replacing an air filter 86
- Removing a filler panel 86
- Replacing a filler panel 87
- Removing a transceiver 89
- Replacing a transceiver 90
- Removing a QSFP transceiver 90
- Cable routing table 91
- System specifications 95
- Ethernet 96
- Power consumption (modules) 100
- Memory specifications 102
- Regulatory compliance (EMC) 102
- 53-1002564-07 103
- Regulatory Statements 105
- VCCI statement 106
- China ROHS 106
- FCC warning (US only) 106
- Cautions and Danger Notices 107
- Danger Notices 112
- Electrical dangers 113
- Laser dangers 116
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