Lexmark IBM 9077 - Manual (Page 231)

Multiple RS/6000 SPs and Multiple GRFs 213
1. The file /etc/gratm.conf needs the configuration statements for the port
used:
Traffic_Shape name=high_speed_high_quality \
peak=155000 sustain=155000 burst=2048 qos=high
Interface ga020 traffic_shape=high_speed_high_quality
PVC ga020 0/132 proto=ip traffic_shape=high_speed_high_quality
2. The file /etc/grifconfig.conf has the following entries:
gt010 192.168.13.4 255.255.255.0 - mtu 65520
ga020 10.1.1.2 255.255.255.0 - mtu 9180
3. The file /etc/grroute.conf has the following line:
192.168.14.0 255.255.255.0 10.1.1.1
This will set the correct route to the other SP Switch network over the
ATM interface automatically; of course, this route could also be set
manually every time the GRF is rebooted.
4. The SP Switch Router Adapter card is connected to the SP Switch and
configured, too. Check with SDRGetObjects switch_responds on the CWS
and use Eunfence if needed.
5. On the nodes in SP21, the following route needs to be set:
route add -net 192.168.13 -netmask 255.255.255.0 -mtu 9180 \
192.168.14.4
6. On the nodes in SP2, the following route needs to be set:
route add -net 192.168.14 -netmask 255.255.255.0 -mtu 9180 \
192.168.13.4
The above command should be given in one line, the \ is to show where
the line break occurred during printing. To avoid any pitfalls, set the MTU
size explicitly to the size of the ATM adapter.
Hint: You must not use SMIT to set this route and put it into the ODM. The
SP Switch is not operational at the time, this route would be set during
boot time. Therefore this route would be put onto another, already
available network interface, for example the Control Ethernet, and this is
definitely not what you want to happen.
Use a separate /etc/rc.routes shell script that is run only after an Estart or
an Eunfence was issued, or use some other mechanisms to have this route
set only after the css0 interfaces on the SP nodes are up and running.
Setup is done now, and every node in SP2 should now be able to ping every
node in SP21 and vice versa.
5. Check for correct routing entries on all nodes in SP21: