WAN Subsystem Configuration and Management Manual
Adding a SWAN Concentrator
WAN Subsystem Configuration and Management Manual—522463-011
4-6
Step 1: Selecting E4SAs, FESAs, GESAs, or G4SAs
Connecting the SWAN Concentrator Through Ethernet
Routers
You can configure a SWAN concentrator that is connected to an
Integrity NonStop NS-series or NonStop S-series server through a router (for more
information, see Figure 4-1 on page 4-7). The configuration is the same as through a
non-routed environment, except for:
•
You must add a ROUTE object to the preferred and alternate TCP/IP processes.
The GATEWAY attributes for the ROUTE objects must specify the host-side router
IP addresses.
•
When you configure the SWAN concentrator ADAPTER object, you must specify
these new attributes: GATEWAYIP and ALTGATEWAYIP. GATEWAYIP specifies
the SWAN-side router IP address for Path A and ALTGATEWAYIP specifies the
SWAN-side router IP address for Path B.
•
You must specify the SUBNETMASK and ALTSUBNETMASK attributes when you
configure the SWAN concentrator ADAPTER object. The SUBNETMASK attribute
must be set to the subnet mask for the SWAN-side network for Path A and the
ALTSUBNETMASK attribute must be set to the subnet mask for the SWAN-side
network for Path B.
•
When you configure the preferred and alternate TCP/IP processes (TCP/IP and
ALTTCPIP), you must configure them to run in different CPUs. For example, the
preferred TCP/IP could be in CPU 0 (primary CPU) and CPU 1 (backup CPU) and
the alternate TCP/IP process could be in CPU1 (primary CPU) and CPU 0 (backup
CPU).
The SWAN concentrator's Path A IP addresses must be on the same subnet as the
GATEWAYIP IP address, and its Path B IP addresses must be on the same subnet as
the ALTGATEWAYIP IP address as shown in Example 4-3.
Example 4-3. Sample Routed Configuration
* HOSTIP (Preferred TCP/IP process SUBNET) = 192.168.010.010
* ALTHOSTIP (Alternate TCP/IP process SUBNET) = 192.168.011.010
* GATEWAYIP = 192.168.012.001
* ALTGATEWAYIP = 192.168.013.001
* SUBNETMASK = %HFFFFFF00
* ALTSUBNETMASK = %HFFFFFF00
* Path A IP addressees = 192.168.012.011, 192.168.012.012, 192.168.012.013
* Path B IP addresses = 192.168.013.011, 192.168.113.012, 192.168.113.013