IBM 9077 manual Route add -net 10.2.1 -netmask 255.255.255.0 -mtu 4352

though. To add the needed routing information and check for proper work, follow these steps:

1.On node 10 in SP21, add the following route to the switch network of SP2: route add -net 192.168.13 -netmask 255.255.255.0 -mtu 4352 10.2.1.2

2.Check for correct routing entry:

root@sp21n10:/ netstat -rn
Routing tables
Destination	Gateway	Flags	Refs	Use	If	PMTU	Exp Groups
Route Tree for Protocol Family 2 (Internet):
default	192.168.4.137	UG	0	482	en0	-	-
10.2.1/24	10.2.1.1	U	1	22	fi0	-	-
127/8	127.0.0.1	U	8	894	lo0	-	-
192.168.4/24	192.168.4.10	U	8	603782	en0	-	-
192.168.13/24	10.2.1.2	UG	0	4985719	fi0	4352	-
192.168.14/24	192.168.14.10	U	1	576716	css0	-	-
Route Tree for Protocol Family 24 (Internet v6):
::1	::1	UH	0	0	lo0 16896		-

3.On the nodes in SP2 that are supposed to communicate with node 10 in SP21, add the following route:

route add -net 10.2.1 -netmask 255.255.255.0 -mtu 4352 192.168.13.4

The -mtu parameter is optional, but should be set to ensure optimal packet size on this route.

4.Check for correct routing entry:

root@sp2n09:/ netstat -rn
Routing tables
Destination	Gateway	Flags	Refs	Use	If	PMTU	Exp Groups
Route Tree for Protocol Family 2 (Internet):
default	192.168.3.37	UG	1	204	en0	-	-
10.2.1/24	192.168.13.4	UG	0	0	css0	4352	-
10.10.1/24	10.10.1.9	U	0	5	fi0	-	-
127/8	127.0.0.1	U	8	767	lo0	-	-
192.168.3/24	192.168.3.9	U	10	948987	en0	-	-
192.168.13/24	192.168.13.9	U	2	560984	css0	-	-
Route Tree for Protocol Family 24 (Internet v6):
::1	::1	UH	0	0	lo0 16896		-

5. On GRF 400 check /etc/grifconfig.conf for the following entry:

gf000 10.2.1.2 255.255.255.0 - mtu 4352

164IBM 9077 SP Switch Router: Get Connected to the SP Switch