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6 configuring ospf interfaces – ZyXEL Communications XGS-4728F User Manual

Page 282

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Chapter 32 OSPF

XGS-4728F User’s Guide

282

32.6 Configuring OSPF Interfaces

To configure an OSPF interface, first create an IP routing domain in the IP Setup
screen (see

Section 8.6 on page 87

for more information). Once you create an IP

routing domain, an OSPF interface entry is automatically created. See

Section

32.1 on page 273

for more information on OSPF.

Type

Select 1 for routing protocols (such as RIP) whose external metrics are
directly comparable to the internal OSPF cost. When selecting a path, the
internal OSPF cost is added to the AB boundary router to the external
metrics.

Select 2 for routing protocols whose external metrics are not comparable
to the OSPF cost. In this case, the external cost of the AB boundary router
is used in path decision to a destination.

Metric Value Enter a route cost (between 0 and 16777214). The default metric value is

15.

Apply

Click Apply to save your changes to the Switch’s run-time memory. The
Switch loses these changes if it is turned off or loses power, so use the
Save link on the top navigation panel to save your changes to the non-
volatile memory when you are done configuring.

Cancel

Click Cancel to begin configuring this screen afresh.

Summary
address

Enter a network IP address which can cover more than one network in
order to reduce the routing table size. For example, you can use
192.168.8.0/22 instead of using 192.168.8.0/24, 192.168.9.0/24,
192.168.10.0/24, and 192.168.11.0/24.

The third octet of these four network IP addresses is 00001000, 00001001,
00001010, 00001011 respectively. The first 6 digits (000010) are the
common part among these IP addresses. So 192.168.8.0/22 can represent
all of these networks.

Subnet
mask

Enter the subnet mask for this summary IP address which can cover
multiple networks.

Add

Click Add to save your changes to the Switch’s run-time memory. The
Switch loses these changes if it is turned off or loses power, so use the
Save link on the top navigation panel to save your changes to the non-
volatile memory when you are done configuring.

Cancel

Click Cancel to begin configuring this screen afresh.

Table 101 IP Application > OSPF Configuration > Redistribute (continued)

LABEL

DESCRIPTION