IBM 9077 ユーザーズマニュアル

220

IBM 9077 SP Switch Router: Get Connected to the SP Switch

Issue some

ping

commands to check the connection:

On the SP21 nodes,

ping

the SP Switch interface of nodes in SP2, on

nodes in SP2

ping

the SP Switch interface of nodes in SP21.

If these

ping

commands fail, check routing settings again. If everything is

as it should be, try to

ping

the SP Switch Router ATM media card or the SP

Switch Router Adapter card, to find the failing part:

ping 192.168.14.4

(on SP21 processor nodes)

ping 192.168.13.4

(on SP2 processor nodes)

ping 10.1.1.1

and

ping 10.1.1.2

(on both GRF 400 and GRF 1600)

If any errors occur, check cabling, the configuration of the SP Switch
Router media cards (see Section 3.7, “Step-by-Step Media Card
Configuration” on page 86 and Section 4.2, “ATM OC-3c Configuration” on
page 110) and the Switch adapters in the SP nodes.

Performance:

To get a rough overview of the data transfer rates that can be achieved in this
scenario, the following test was performed:

1. We used ftp to conduct several file transfers of a 300 MB file from the

nodes in SP2 to one chosen node in SP21, and at the same time used ftp
to conduct several file transfers of a 300 MB file from the nodes in SP21 to
a chosen node in SP2. We sent the files to /dev/null on the receiving
nodes to eliminate any hard disk influence:

We saw up to about 14.5 MB/s with just one side sending data; with all
nodes sending and receiving, we achieved a duplex throughput of no more
than 24 MB/s over the ATM ports.

root@sp2cw0:/ dsh -a netstat -rn | grep 192.168.14
sp2n01: 192.168.14/24    192.168.13.4      UG       0  1099887 css0  9180   -
sp2n05: 192.168.14/24    192.168.13.4      UG       0  1299484 css0  9180   -
sp2n06: 192.168.14/24    192.168.13.4      UG       0   352513 css0  9180   -
sp2n07: 192.168.14/24    192.168.13.4      UG       0   999147 css0  9180   -
sp2n08: 192.168.14/24    192.168.13.4      UG       0   146784 css0  9180   -
sp2n09: 192.168.14/24    192.168.13.4      UG       0   355671 css0  9180   -
sp2n10: 192.168.14/24    192.168.13.4      UG       0   879759 css0  9180   -
sp2n11: 192.168.14/24    192.168.13.4      UG       0  1026871 css0  9180   -
sp2n12: 192.168.14/24    192.168.13.4      UG       0  1099748 css0  9180   -
sp2n13: 192.168.14/24    192.168.13.4      UG       0   340367 css0  9180   -
sp2n14: 192.168.14/24    192.168.13.4      UG       0   347869 css0  9180   -
sp2n15: 192.168.14/24    192.168.13.4      UG       0   351648 css0  9180   -
root@sp2cw0:/