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Implementing OSPF on Cisco IOS XR Software
How to Implement OSPF on Cisco IOS XR Software
RC-154
Cisco IOS XR Routing Configuration Guide
Step 13
neighbor
ip-address
[priority
number
]
[poll-interval
seconds
][cost
number
]
[database-filter [all]]
or
neighbor
ipv6-link-local-address
[priority
number
] [poll-interval
seconds
][cost
number
]
[database-filter [all]]
Example:
RP/0/RP0/CPU0:router(config-ospf-ar)# neighbor
10.34.16.6
or
RP/0/RP0/CPU0:router(config-ospf-ar)# neighbor
fe80::3203:a0ff:fe9d:f3f
Configures the IPv4 address of OSPF neighbors
interconnecting to nonbroadcast networks.
or
Configures the link-local IPv6 address of OSPFv3
neighbors.
• The ipv6-link-local-address argument must be in the
form documented in RFC 2373 in which the address is
specified in hexadecimal using 16-bit values between
colons.
• The priority keyword notifies the router that this
neighbor is eligible to become a DR or BDR. The
priority value should match the actual priority setting
on the neighbor router. The neighbor priority default
value is zero. This keyword does not apply to
point-to-multipoint interfaces.
• The poll-interval keyword does not apply to
point-to-multipoint interfaces. RFC 1247 recommends
that this value be much larger than the hello interval.
The default is 120 seconds (2 minutes).
• Neighbors with no specific cost configured assumes the
cost of the interface, based on the cost command. On
point-to-multipoint interfaces, cost number is the only
keyword and argument combination that works. The
cost keyword does not apply to NBMA networks.
• The database-filter keyword filters outgoing LSAs to
an OSPF neighbor. If you specify the all keyword,
incoming and outgoing LSAs are filtered. Use with
extreme caution since filtering may cause the routing
topology to be seen as entirely different between two
neighbors, resulting in ‘black-holing’ or routing loops.
Command or Action Purpose