Ethernet Adapter Installation and Support Guide

Introduction to the Ethernet 4 ServerNet Adapter

(E4SA)

Ethernet Adapter Installation and Support Guide—425684-003

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Overview of the E4SA

The Ethernet 4 ServerNet adapter (E4SA) is a ServerNet adapter that supports four

Ethernet interfaces and communicates with multiple processors through its dual

ServerNet interfaces to the ServerNet fabrics.

In a NonStop S-series server, each processor enclosure can house two E4SAs and

each I/O enclosure can house up to four E4SAs. Four physical interfaces (PIFs), four

logical interfaces (LIFs), and multiple filters are associated with each E4SA, and each

E4SA contains two ServerNet Addressable Controllers (SACs). A SAC corresponds to

controller functionality uniquely addressable within one or more ServerNet address

domains through the node ID and address fields in a request packet.

Four Media Access Control (MAC) addresses are assigned to the PIFs at

manufacturing. These addresses are printed on the label of each adapter.

External Connectors and Indicators

The external connectors on an E4SA are four 10BaseT RJ-45 type connectors, two

debugging ports, and a power interface. The debugging ports are for manufacturing

only.

The external indicators consist of two status LEDs for the E4SA, and four status LEDs

for each Ethernet port. Figure 1-1 on page 1-3 shows the position of the external

connectors and indicators on the front of the adapter.

The two E4SA status LEDs, which are controlled by the Service Processor (SP),

indicate the state of the E4SA as follows:

The four status LEDs on each Ethernet port indicate the activity on and condition of the

Ethernet port as follows:

Note. E4SAs (including E4SA connections via S-series I/O enclosures) are not supported on

NonStop BladeSystems.

LED E4SA State

Green Power-on

Amber Fault condition

LED Indication

RX Ethernet is receiving from the Ethernet

TX Ethernet is transmitting to the Ethernet

COL Collision has been detected on the Ethernet

LNK Twisted-pair link integrity