Sun Fire V480 Server
 

GCS>Sun Microsystems>Servers>Entry-Level Servers
 

Configuring this variable for specific network configurations is outside of the scope of this document.

There are two "built-in" network interfaces on the V480. The physical connections are labeled Net0 and Net1. The device paths for the interfaces are as follows:

    Net0 = /pci@9,700000/network@2
Net1 = /pci@9,600000/network@1

Net0 and Net1 are generally associated with ce0 (Cassini Ethernet) and ce1 respectively under Solaris[TM]. However this may not be a constant, whereas the specific hardware device path is a constant the mapping of device instance numbers under Solaris may change depending upon specific hardware and OBP configurations.

Solaris will assign the same mac address as reported by the OBP banner to each of the "ce" interfaces when the 'local_mac_address ' is set to false (default). This is the behavior seen in other multi-interfaced platforms.

When 'local_mac_address ' is set to 'true', Solaris assigns (or is assigned) the mac address associated with Net1 to "ce0" rather than from Net0. This results in a different mac address than what is displayed by the banner. This effective change occurs due to the order in which these interfaces are probed at the OBP level. This behavior may be different from other platforms where the primary interface maintains the OBP banner mac address regardless of the 'local-mac-address' setting.

To show this correlation below are examples of the OBP banner (1), a 'show-nets' output (2), how the entries are defined as instance numbers in /etc/path_to_inst file (3), and how Solaris associates the mac address with 'local_mac_address ' set to false (4) and when set to true (5).

1) OBP banner output:

{2} ok banner
Sun Fire [TM] 480R, No Keyboard
Copyright 1998-2002 Sun Microsystems, Inc.   All rights reserved. OpenBoot
4.5, 4096 MB memory installed, Serial #51038073. Ethernet address
0:3:ba:a:c7:79, Host ID: 830ac779.

2) 'show-nets' output

{2} ok show-nets
a) /pci@9,600000/network@1
b) /pci@9,700000/network@2

3) Network entries in /etc/path_to_inst file

"/pci@9,700000/network@2" 0 "ce"
"/pci@9,600000/network@1" 1 "ce"

4) How Solaris associates the mac address with local-mac-address =false

# ifconfig -a
lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
ce0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
inet 129.148.11.46 netmask ffffff00 broadcast 129.148.11.255
ether 0:3:ba:a:c7:79
ce1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
inet 129.129.129.6 netmask ffff0000 broadcast 129.129.255.255
ether 0:3:ba:a:c7:79

5) How Solaris associates the mac address with local-mac-address =true

# ifconfig -a
lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
ce0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
inet 129.148.11.46 netmask ffffff00 broadcast 129.148.11.255
ether 0:3:ba:a:c7:7a
ce1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
inet 129.129.129.6 netmask ffff0000 broadcast 129.129.255.255
ether 0:3:ba:a:c7:79

The first line 'mac-address' shows the same address as in the
'banner' which is

the system MAC address. The line for 'local-mac-address' shows
the address that

will be assigned to ce0 (always banner address + 1, 79 + 1 = 7a)
if the OBP variable

local-mac-address  is set to true.

The Net1 device is shown below:

{2} ok device-end

 {2} ok show-nets

 a) /pci@9,600000/network@1

 b) /pci@9,700000/network@2

 q) NO SELECTION 

 Enter Selection, q to quit: a       ======>   Net1 is selected

 /pci@9,600000/network@1 has been selected.

 Type ^Y ( Control-Y ) to insert it in the command line. 

 e.g. ok nvalias mydev ^Y 

                  for creating devalias mydev for 

 /pci@9,600000/network@1

 {2} ok select /pci@9,600000/network@1   ======> this is Net1 device path

 100 Mbps HDX Link up

 {2} ok .prp     ======> Display the properties

 mac-address                           00 03 ba 0a c7 79 

 assigned-addresses             82000810 00000000 00200000 00000000 00200000 

                                                  82000830 00000000 00100000 00000000 00100000 

 pci-req-removal                   

 compatible                             70 63 69 31 30 38 65 2c 61 62 62 61 2e 31 31 00 

 reg                                           00000800 00000000 00000000 00000000 00000000 

                                                  02000810 00000000 00000000 00000000 00200000 

 version                                   Gigaswift FCode 2.7 02/01/31

 address-bits                         00 00 00 30 

 max-frame-size                     00 00 40 00 

 phy-type                                 mif

 model                                       SUNW,pci-ce

 device_type                           network

 name                                         network

 local-mac-address               00 03 ba 0a c7 79 

 66mhz-capable 

 fast-back-to-back 

 devsel-speed                         00000002 

 class-code                             00020000 

 interrupts                             00000001 

                                                  00000002 

                                                  00000003 

                                                  00000004 

 latency-timer                       00000040 

 cache-line-size                   00000010 

 max-latency                           00000040 

 min-grant                               00000040 

 revision-id                           00000011 

 device-id                               0000abba 

 vendor-id                               0000108e 

 {2} ok 



 

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