Cisco InfiniBand 4x User's Guide download pdf (Page 138)

124 Implementing Cisco InfiniBand on IBM BladeCenter

Cisco 4948 Ethernet Switch, the 4948 will put any untagged packet on to VLAN 88 inside the

4948).

Assuming the client and other components are already configured, all we have to do is create

a bridge group with the desired options in the gateway module, to permit packets to flow.

Note that a bridge group is a logical entity that allows the gateway to pass InfiniBand frames

to the Ethernet network.

7.3.2 Some comments on bridge groups

When creating a bridge group, remember:

򐂰 A bridge group is an entity that runs on the Ethernet gateway module and enables the

bridging of one IPoIB partition to one VLAN.

򐂰 The Ethernet gateway acts like a Layer 2 bridge between InfiniBand and Ethernet. Each

Ethernet gateway must be configured for Layer 2 bridging (with or without link aggregation

and redundancy groups).

򐂰 Configuring a bridge group enables the system to learn everything it needs to know about

the location of nodes on the network with very little input from the administrator.

򐂰 The bridge group only bridges the IP protocol and drops all other traffic.

򐂰 Attributes of the bridge port must be created or deleted with the bridge group. For

example, the physical port attribute is assigned at the time the bridge group is created,

and cannot be changed without deleting the bridge group.

򐂰 The parameters that you define for the bridge group determine the way the traffic is

handled between the InfiniBand network and the Ethernet network. The bridge port has

certain attributes that are always attached to the bridge port entity, and certain attributes

that are optional to the bridge port.

򐂰 Some mandatory items:

– You must select a p_key (default is ff:ff). If you use a non default p_key on the gateway

module, you will need to configure the InfiniBand clients and InfiniBand fabric to use

this p_key.

– You must select a physical Ethernet port number(s) or aggregation/trunk interface.

򐂰 Some optional items:

– Non-default p_key (not covered in this chapter)

– VLAN tagging

– Aggregation/trunking

For our example, we demonstrate creating the bridge group using the Element Manager.

Then we show what the CLI looks like after this configuration is applied.

7.3.3 Summary of steps to implement a simple bridge group design

Here, we provide a summary of the steps that we describe in the remainder of this section to

implement the simple bridge group design:

1. In the 3012 Element Manager, open the Bridging window (step 1 on page 125).

2. Open the Add Bridge Group window and complete the information in the Groups tab (step

2 on page 126).

3. Complete the Forwarding and Subnet tabs in the Add Bridge Group window (step 3 on

page 128).

1 2 ... 133 134 135 136 137 138 139 140 141 142 143 ... 173 174

Comments to this Manuals

No comments

Cisco InfiniBand 4x User's Guide Page 138

Comments to this Manuals

Related products and manuals for Network switches Cisco InfiniBand 4x