IBM Switch 9077 User Manual
Page 229
Multiple RS/6000 SPs and Multiple GRFs
211
• If ARP is disabled on the SP Switch network, the IP addresses assigned to
the nodes must be determined by the switch node numbers.
Note: The SP Switch Router Adapter card will not properly forward IP data to
nodes assigned with an IP address that is in another subnet.
Configuration:
In this scenario, we have the SP Switch of SP21 connected to the GRF 1600.
The GRF 1600 has its ATM OC-3c media card’s port 00 connected to the
GRF 400 ATM OC-3c media card’s port 00. The GRF 400 in turn is attached
to the SP Switch of SP2, as shown in Figure 68 and Table 23 on page 212.
The netmask for all interfaces is 255.255.255.0.
Figure 68. SP Switch - ATM - SP Switch Connection
Table 23 on page 212 shows the IP addresses used in our configuration.
SP
Switch
Router 1
GRF 400
SP Switch Router
Adapter card 1
SP Switch 1
SP2
SP processor node
SP processor node
IP 192.168.13.4
Mask 255.255.255.0
Mask 255.255.255.0
Net 192.168.13.0
SP
Switch
Router 2
GRF 1600
SP Switch Router
Adapter card 2
SP Switch 2
SP21
SP processor node
SP processor node
IP 192.168.14.4
Mask 255.255.255.0
Net 192.168.14.0
ATM OC-3c
Adapter card
ATM OC-3c
Adapter card
Net 10.1.1.2
Net 10.1.1.1