Nortel Optical Multiservice Edge 6130 Planning Manual page 199

Note: OSPF routing is always active on the OME6130 network element,
and therefore does not need to be enabled at the nodal level. It must only
be provisioned on the network interface for which it is required.
The OME6130 supports enabling and disabling of OSPF routing protocol per
IP-carrying interface, including Eth0, PPP/cHDLC DCC, and SGRE
interfaces.
For more information about OSPF, see
OSPF routing implementation rules
You must observe the following rules when you implement the OSPF routing:
• Default user configurable OSPF area of 0.0.0.1 for all network interfaces
for which the OSPF parameter is enabled.
• Set the OSPF parameter to Enable to use dynamic routing over the
network interfaces.
• When OSPF is enabled on the eth0 network interface (LAN port), the
provisioned Ethernet sub-network is advertised as part of the OSPF link
state advertisement (LSA).
• The Router ID IP address is used only in OSPF hello packets to form OSPF
adjacencies. This allows multiple different OSPF areas of 0.0.0.1 to exist
in the customer network as long as the OME6130 NEs are connected to
different Area Border Routers (ABRs). See
• It is recommended to use the Ethernet IP address as the Router ID IP
address if the NE has only direct LAN connectivity.
• It is recommended to use a different Router ID IP address other than the
Ethernet IP address if the NE has DCC enabled.
• When OSPF is enabled on the Ethernet port and DCC is being used to
provide OA&M, the Router ID IP address should be in a different
sub-network other than the Ethernet IP address sub-network.
• Re-distribution of static route into OSPF routing table is supported. By
default, static route re-distribution is disabled.
• Route redistribution between OSPF and iISIS routing protocols is not
supported.
Planning Guide NT6Q92MA Rel 1.0 Iss 1 Standard September 2006
Appendix A: Data communications planning 10-13
IP routing protocols on page
Figure 10-1 on page
10-97.
10-14.