Fiber Saver (2029) Implementation Guide

100 Fiber Saver (2029) Implementation Guide

Table 15 shows the IP addressing scheme of the remote sites in Figure 53 on

page 98.

Table 15. Stand alone environment - Remote site IP addressing scheme

5.3.2 Connecting to the IBM 2029 network through an IP network

The configuration shown in Figure 54 on page 101 provides more flexibility for

connecting an IBM 2029 network to a system management environment than

Figure 53 on page 98. It also involves more IP network planning in the areas of IP

routing and IP addressing, as well as in network hardware (for example, IP

routers, LAN adapters, and hubs).

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.

Parameter Shelf Band 1 Shelf Band 2 Shelf Band 5 Shelf Band 6

Primary Shelf Address 172.16.10.1 172.16.10.1 172.16.10.1 172.16.10.1

Shelf Address 172.16.10.17 172.16.10.21 172.16.10.25 172.16.10.29

Netmask 255.255.255.252 255.255.255.252 255.255.255.252 255.255.255.252

DHCP Address 172.16.10.18 172.16.10.22 172.16.10.26 172.16.10.30

Default Gateway Address 0.0.0.0 0.0.0.0 0.0.0.0 0.0.0.0

Shelf Identifier 9 10 13 14

Ethernet Hubbing Group2222

External Mgr Address not applicable not applicable not applicable not applicable

Chapter 5. System management connectivity 101

Figure 54. Connecting through an external IP network

The physical attributes of this configuration are:

• An IBM 2029 Ethernet hub is used in the hub site to interconnect the shelves,

because there are multiple shelf pairs in this configuration.

• Crossover 10Base-T cables are used to connect the IBM 2029 Ethernet hub

and the 2X ports on the shelves in the hub site for intershelf communications

of the overhead channels (cross-band traffic).

• A second IBM 2029 Ethernet hub is installed in the remote site for redundancy

of the cross-band communications path.

• Hub-1 (Ethernet hub) in the hub site connects to three device interfaces:

• Router-2 dedicated Ethernet adapter using a straight-through 10Base-T

cable.

• GNE shelf Band 1 1X port using a crossover 10Base-T cable.

• The System Management workstation using a straight-through 10Base-T

cable.

• Additional System Management or External Management workstations may be

connected, if required, to spare ports in Hub-1 using straight-through

10Base-T cables and static IP addresses.

• Alternatively, Hub-1 may be removed from the configuration and Router-2

connected directly to the GNE Shelf Band 1 1X port using a straight-through

10Base-T cable. The System Management workstation may then be

REMOTE SITE

WAN

HUB SITE

fiber pair

fiber pair

WAN

1X

2X

1X

2X

1X

2X

1X

2X

Shelf Band 1

Shelf Band 2

Shelf Band 5

Shelf Band 6

1X

2X

1X

2X

1X

2X

1X

2X

Shelf Band 6

Shelf Band 5

Shelf Band 2

Shelf Band 1

GNE

GNE

SYSTEM

MANAGER

S

T

A

T

I

C

SYSTEM

MANAGER

H

U

B

2

0

2

9

ROUTER -3

ROUTER -1

ROUTER -2

HUB -1

H

U

B

2

0

2

9

D

H

C

P

D

H

C

P

STATIC

OR

DHCP

EXTERNAL (SNMP)

MANAGER

OPERATIONS NMS SITE

SYSTEM

MANAGER