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11.4 OSFP configuration
OSPF is a dynamic routing protocol, based on link-state technology and using shortest path first Dijkstra
algorithm.
11.4.1 Configuration algorithm
Step Description Command Keys
1 Configure OSFP precedence for the
main routing table (optionally).
esr(config)# ip protocols ospf
preference <VALUE>
<VALUE> – protocol
precedence, takes values in the
range of [1..255].
Default value: 150.
esr(config-vrf)# ip protocols ospf
preference <VALUE>
2 Configure OSFP routing tables capacity
(optionally).
esr(config)# ip protocols ospf
max-routes <VALUE>
<VALUE> – amount of OSPF
routes in the routing table,
takes values in the range of:
for ESR-1000/1200/1500
/1511/1700/3100 –
[1..500000];
for ESR-20/21/100/200
– [1..300000];
for ESR-10/12V(F)/14VF
– [1..30000]
Default value for the global
mode:
for ESR-1000/1200/1500
/1511/1700/3100 –
(500000);
for ESR-20/21/100/200
– (300000);
for ESR-10/12V(F)/14VF
– (30000).
Default value for VRF: 0
esr(config)# ipv6 protocols ospf
max-routes <VALUE>
3 Enable the output of OSPF neighbor
state information (optionally).
esr(config)# router ospf log-
adjacency-changes
esr(config)# ipv6 router ospf log-
adjacency-changes
4 Create IP subnets lists that will be used
for further filtration of advertised and
received IP routes.
esr(config)# ip prefix-list <NAME> <NAME> – name of a subnet
list being configured, set by the
string of up to 31 characters.
esr(config)# ipv6 prefix-list
<NAME>
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