Cisco InfiniBand 4x User's Guide Page 133

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Chapter 7. Configuring the Cisco 3012 InfiniBand to Ethernet gateway 119
Features and characteristics of the Ethernet gateway module include:
򐂰 Two inward facing 4X (10G) InfiniBand ports
򐂰 Six outward facing RJ45 10/100/1000 Ethernet ports with MDI/MDI-X support
򐂰 Can be installed in any of the expansion slots of the SFS 3012
򐂰 Hot-swappable
򐂰 Jumbo frame support built in
9 K, Ethernet to InfiniBand
2 K, InfiniBand to Ethernet
򐂰 Supports up to 32 VLANs, both static VLANs and 802.1Q trunking
򐂰 Up to a six port static EtherChannel (also referred to as trunking or aggregation)
򐂰 Some items not supported in this module
Does not support Spanning-tree (uses proprietary methods to prevent loops)
Does not support CDP (CDP is supported on the Ethernet management port of the
3012 itself, but not on the Ethernet gateway modules Ethernet ports)
Figure 7-3 shows a basic block flow of the Ethernet gateway module within the 3012, along
with how a bridge group is used to move packets from InfiniBand to Ethernet and vise versa.
Figure 7-3 Block flow of Ethernet gateway module
Some facts about the gateway module:
򐂰 This module is considered a Target Channel Adapter (TCA) on the InfiniBand side. It
terminates an InfiniBand link and executes transport level functions.
򐂰 This module operates in what is known as
cut-through mode, which provides for maximum
throughput of data.
6 Port Ethernet
Gateway Module
1
2
3
4
5
6
1
2
10/100/1000 Ethernet Gateway Ports - External
4x IB Gateway Ports - Internal
IB to Chassis
Slot 15
IB to Chassis
Slot 16
Ethernet to upstream
Ethernet network
Bridge
Group
1
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