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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:/