110 Fiber Saver (2029) Implementation Guide
Table 20 shows the OSPF parameters for the GNE and non-GNE shelves in each
site; see Figure 56 on page 107.
Table 20. OSPF environment - shelf OSPF parameters
The following GNE shelf OSPF parameters must match those of the router the
GNE shelf is connecting through:
Password Enabled
Password
Transit Delay
Retransmit Interval
Hello Interval
Router Dead Interval
If you plan to route your IBM 2029 system management traffic through a
non-secure IP network (for example, through the Internet), you should consider
using a Virtual Private Network (VPN). A VPN creates a secure private
connection that essentially acts like a point-to-point connection.
For more detailed information concerning IP network planning, refer to IP
Network Design Guide, SG24-2580.
5.4 Dark fiber managed services
Dark fiber trunk services are typically integrated and managed by
telecommunications companies (TELCO) who usually own the fiber optic trunk
cables throughout a metropolitan area. As the owner of the dark fiber, the TELCO
can offer managed dark fiber services to client organizations to provide fiber optic
connectivity between two or more of the organizations sites. The client
OSPF parameters GNE shelves Non-GNE shelves
Area ID (internal OSPF) 0.0.0.0 0.0.0.0
OSPF Backbone Enabled Yes No
Router Priority 3 not applicable
Cost 10 not applicable
Password Enabled Yes not applicable
Password IBM2029 not applicable
Transit Delay 1 (default) not applicable
Retransmit Interval 5 (default) not applicable
Hello Interval 10 (default) not applicable
Router Dead Interval 40 (default) not applicable
The Area ID parameter in Table 20 determines the value of the Area ID of the
IBM 2029 internal OSPF network only. The Area ID value used by the GNE
shelves to connect to the external OSPF network is 0.0.0.0. This value is hard
coded in each GNE shelf and cannot be changed.
Note
Chapter 5. System management connectivity 111
organization leases the managed dark fiber service from the TELCO, rather than
owning the fiber service infrastructure.
Figure 57 is an example of this type of managed service. The dual GNE
environment is shown for completeness.
IBM 2029 Fiber Savers are the network nodes of the dark fiber service
infrastructure, and so the TELCO, as the fiber service integrator, requires the
ability to manage the IBM 2029 network from their network management system
(NMS) site. This external management is achieved through the external (SNMP)
management workstation located at the NMS site. See 5.7, External
management using SNMP on page 115.
The client organization requires system management of their device fiber optic
channels attaching to, and being transported by, the IBM 2029 network. System
management may include such tasks as adding new device channel connections,
changing existing device channel protocols, and channel link problem
determination. This is achieved through the system management workstations
located at the clients hub and remote sites, and remotely at the client operations
site. See 5.6, The IBM 2029 System Manager on page 114.
Figure 57. Connecting through an external IP network - managed service
The physical attributes of this configuration include those described in 5.3.2,
Connecting to the IBM 2029 network through an IP network on page 100.
Additional physical attributes of this configuration are:
CLIENT OPERATIONS SITE
REMOTE SITE
172.31.30.1
172.31.40.2
172.31.30.3
172.31.20.2
WAN
255.255.255.252
255.255.255.0
HUB SITE
fiber pair
fiber pair
WAN
255.255.255.252
EXTERNAL (SNMP)
MANAGER
FIBER SERVICE INTEGRATOR (TELCO) - NMS SITE
172.16.10.18
172.31.40.1
255.255.255.240
172.31.20.1
172.16.10.2
172.16.20.1
255.255.255.240
172.16.10.3
255.255.255.240
1X
2X
1X
2X
1X
2X
1X
2X
172.16.10.37
Shelf Band 1
Shelf Band 2
Shelf Band 5
Shelf Band 6
172.16.10.36
255.255.255.255
255.255.255.255
172.16.10.38
255.255.255.255
1X
2X
1X
2X
1X
2X
1X
2X
172.16.10.35
172.16.10.34
172.16.10.33
172.16.10.1
Shelf Band 6
Shelf Band 5
Shelf Band 2
Shelf Band 1
255.255.255.255
GNE
172.16.10.17
255.255.255.240
GNE
255.255.255.240
255.255.255.255
255.255.255.255
Corporate LAN
SYSTEM
MANAGER
S
T
A
T
I
C
SYSTEM
MANAGER
H
U
B
2
0
2
9
172.16.10.4
255.255.255.240
( STATIC )
OR
SYSTEM
MANAGER
255.255.255.0
172.16.20.3
OSPF Enabled
OSPF Enabled
OSPF Enabled
ROUTER -3
ROUTER -1
ROUTER -2
HUB -1
ROUTER -4
NAT Enabled
H
U
B
2
0
2
9
D
H
C
P
D
H
C
P
DHCP

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