IBM BladeCenter Deployment Guide
If, however, the drivers are installed on the second Ethernet Controller in the list first, and then the first Ethernet Controller in the list, the connection names are reversed, and the connection named Local Area Connection is now the one going to switch 2, and the connection named Local Area Connection 2 is now going to switch 1.
In older versions of Linux it was observed that eth0 went to the Ethernet switch in switch bay 2 and eth1 goes to the Ethernet switch in switch bay 1. This was reversed from a normal Windows 2000 install, as previously mentioned, and also proves to be the source of some confusion. However, current testing with Linux (Red Hat Version 3 Update 6) and SLES 9 has shown that eth0 goes to the Ethernet switch in bay 1 and eth1 goes to the switch in bay 2. On an HS40 blade, 0 & 2 should be connected to top switch module and 1 & 3 connect to the bottom switch module.
The designations can be verified by browsing the MAC address table on the Ethernet switch and match the values to the MAC addresses show in the ifconfig output on the blade. The following example shows the MAC address of Eth 0/1 devices. Log into the top switch module (bay 1) and search for the MAC address on Internal port 13 (Bay 13) corresponding to Eth0 device. It shows the same MAC address of Eth0. For Eth1, do the same by logging into switch module bay2 (bottom) and searching for the MAC address on internal port 13, it also shows the same MAC address for Eth1.
Linux version
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| |||
eth0 | Link encap:Ethernet | HWaddr 00:11:25:4A:00:4C | ||
| inet addr:9.42.166.82 | Bcast:9.42.166.255 | Mask:255.255.255.0 | |
| UP BROADCAST RUNNING MULTICAST | MTU:1500 | Metric:1 | |
| ... |
|
|
|
Browse MAC Address Table – Top Switch |
|
| ||
VID | MAC Address |
| Port | Learned |
9 |
| Bay 13 | Dynamic | |
eth1 | Link encap:Ethernet | HWaddr 00:11:25:4A:00:4D | ||
| inet addr:10.0.200.32 | Bcast:10.0.255.255 | Mask:255.255.0.0 | |
| UP BROADCAST RUNNING MULTICAST | MTU:1500 | Metric:1 | |
| ... |
|
|
|
Browse MAC Address Table – Bottom Switch |
| Learned | ||
VID | MAC Address |
| Port | |
100 |
| Bay 13 | Dynamic | |
Version 3.0, 3/10/2006 | 23 |
The BladeCenter Deployment Guide is intended as a personal productivity tool. It is not intended to be comprehensive and is provided for
guidance only, on an 'as is basis' without warranty of any kind. Please be aware that its contents have not been certified by IBM.
