Cisco Ethernet switch Operations Instructions download pdf (Page 241)

Appendix A. Hints and tips

In this section, we provide hints and tips that may prove useful during the setup, configuration,

and operation of your Cisco Systems Intelligent Gigabit Ethernet Switch Module for the

IBM Eserver BladeCenter.

As noted elsewhere in this document, the information herein applies to the 4-port

copper-based IGESM running a 12.1(14) version of IOS. If working with the 4-port SFP-based

IGESM or a 4-port copper-based IGESM running 12.1(22) and above code, see the

appropriate document for those solutions.

Blade server NIC numbering

The topic of which connection on a given blade server goes to which Cisco Systems IGESM

in the BladeCenter is the subject of some discussion.

The fact is that the physical first NIC on an HS20/JS20 blade server will always go to the

IGESM in bay 1 (top bay) and the second physical NIC on an HS20/JS20 blade server will

always go to the IGESM in bay 2 (bottom bay). This is hardwired in the BladeCenter and can

not be changed.

With that said, the operating system running on the blade server usually attempts to apply

logical names to these physical NICs, and they may be backward from what is expected. We

now discuss how this can come about and how to tell which logical connection goes to which

physical NIC.

most cases, for Windows 2000, the connection named Local Area Connection goes to the

Cisco Systems IGESM in switch bay 1 (referred to as CIGESM1 in Chapter 7, “Cisco Systems

IGESM configuration and network integration” on page 99), and the connection named Local

Area Connection 2

goes to the Cisco Systems IGESM in switch bay 2 (referred to as

CIGESM2 in Chapter 7).

We use the phrase

most cases, because as already noted, this is not always the case.

For Windows 2000, the order of the Local Area Connection logical

names assigned to

physical NICs is based on the

order in which the drivers for each NIC are installed. The

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Cisco Ethernet switch Operations Instructions Page 241