Tuesday, March 24, 2015
OSPF Walkthrough
Lets play OSPF Walkthrough
lab@vMX-1> show configuration logical-systems
r1 {
interfaces {
ge-0/0/1 {
unit 0 {
family inet {
address 10.1.1.1/30;
}
}
}
lo0 {
unit 1 {
family inet {
address 1.1.1.1/32;
address 1.1.1.9/32 {
primary;
}
}
}
}
}
protocols {
ospf {
area 0.0.0.0 {
interface ge-0/0/1.0;
}
}
}
}
r2 {
interfaces {
ge-0/0/2 {
unit 0 {
family inet {
address 10.1.1.2/30;
}
}
}
lo0 {
unit 2 {
family inet {
address 1.1.1.2/32;
}
}
}
}
protocols {
ospf {
area 0.0.0.0 {
interface ge-0/0/2.0;
}
}
}
}
lab@vMX-1:r1> show ospf neighbor
Address Interface State ID Pri Dead
10.1.1.2 ge-0/0/1.0 Full 1.1.1.2 128 35
lab@vMX-1:r2> show ospf neighbor
Address Interface State ID Pri Dead
10.1.1.1 ge-0/0/2.0 Full 1.1.1.9 128 31
you can influence the ID of ospf neighbor using loopback :))
but remember router id configuration under routing options stanza will take the highest precedence.
lab@vMX-1:r1> show configuration interfaces lo0
unit 1 {
family inet {
address 1.1.1.1/32;
address 1.1.1.9/32 {
primary;
}
}
}
lab@vMX-1:r1> show configuration routing-options
router-id 1.1.1.1;
lab@vMX-1:r2> show ospf neighbor
Address Interface State ID Pri Dead
10.1.1.1 ge-0/0/2.0 Full 1.1.1.1 128 39
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