Complex Configuration Example; Figure 14: Pp8600 Network Example - Avaya 8600 Engineering

ERS 8600# config ip ospf interface <IP address> dead-interval

To change the OSPF Hold Down Interface, enter the following command:
ERS 8600# config ip ospf holddown <3..60>
9.6

Complex Configuration Example:

This section has configuration examples for five Ethernet Routing Switch 8600‟s pertaining to the diagram
below:

PP8600A is an OSPF ASBR belonging to OSPF Area 0 and 3. It also configured to distribute a
default route for Internet traffic.

PP8600B is an OSPF Stub ABR to OSPF Area 2 and ABR to OSPF Area 3

PP8600C is an OSPF ASBR and is configured to distribute OSPF to RIP and RIP to OSPF

PP8600D is an OSPF internal router in Area 3

PP8600E is an internal OSPF Sub router in Area 2

All OSPF interfaces will be brouter ports with the exception of PP8600E. For network
172.3.3.0/24 on PP8600E, VLAN configuration will be used instead of brouter port. The reason
for using brouter ports versus VLANs is spanning tree is disable by default by using brouter
interfaces.

All interfaces used for this configuration are Ethernet, hence OSPF interfaces are broadcast with
the exception of the Circuitless IP interfaces which are passive. PP8600E is configured so that if
never becomes a Designated Router (DR) by setting it‟s interface priority to 0.

Setup OSPF Router Priority so that PP8600A becomes DR (priority = 100) and PP8600B
becomes BDR (priority = 50).
The reason for using Stub or NSSA areas is to reduce the LSDB size by not including external LSA‟s. The
Sub ABR will advertise a default route into the Stub area for all external routes.
November 2010

Figure 14: PP8600 Network Example

ERS 8600 / 8800 OSPF Technical Configuration Guide
avaya.com
<0..2147483647>
38