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ospfd: restart spf when distance is updated

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if r1 has a route received from a neighbor with the default administrative
distance configured

    r1# sh ip route
    Codes: K - kernel route, C - connected, S - static, R - RIP,
           O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
           T - Table, v - VNC, V - VNC-Direct, A - Babel, F - PBR,
           f - OpenFabric,
           > - selected route, * - FIB route, q - queued, r - rejected, b - backup
           t - trapped, o - offload failure

    O>* 1.1.1.1/32 [110/20] via 10.0.12.2, r1-r2-eth0, weight 1, 00:00:41

if we change the administrative distance

    r1(config)# router ospf
    r1(config-router)# distance 50

this is not applied as there are no changes in the routing table

    r1# sh ip route
    Codes: K - kernel route, C - connected, S - static, R - RIP,
           O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
           T - Table, v - VNC, V - VNC-Direct, A - Babel, F - PBR,
           f - OpenFabric,
           > - selected route, * - FIB route, q - queued, r - rejected, b - backup
           t - trapped, o - offload failure

    O>* 1.1.1.1/32 [110/20] via 10.0.12.2, r1-r2-eth0, weight 1, 00:00:13

This commit will force the update of the routing table with the new configured distance

    r1# sh ip route
    Codes: K - kernel route, C - connected, S - static, R - RIP,
           O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
           T - Table, v - VNC, V - VNC-Direct, A - Babel, F - PBR,
           f - OpenFabric,
           > - selected route, * - FIB route, q - queued, r - rejected, b - backup
           t - trapped, o - offload failure

    O>* 1.1.1.1/32 [50/20] via 10.0.12.2, r1-r2-eth0, weight 1, 00:00:14

Signed-off-by: ckishimo <carles.kishimoto@gmail.com>
This commit is contained in:
ckishimo 2022-01-31 23:58:14 +01:00
parent ff8b960c1c
commit 9fdb4735ad
1 changed files with 10 additions and 2 deletions
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12
ospfd/ospf_vty.c
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@ -9478,8 +9478,13 @@ DEFUN (ospf_distance,
{
VTY_DECLVAR_INSTANCE_CONTEXT(ospf, ospf);
int idx_number = 1;
uint8_t distance;
ospf->distance_all = atoi(argv[idx_number]->arg);
distance = atoi(argv[idx_number]->arg);
if (ospf->distance_all != distance) {
ospf->distance_all = distance;
ospf_restart_spf(ospf);
}
return CMD_SUCCESS;
}
@ -9493,7 +9498,10 @@ DEFUN (no_ospf_distance,
{
VTY_DECLVAR_INSTANCE_CONTEXT(ospf, ospf);
ospf->distance_all = 0;
if (ospf->distance_all) {
ospf->distance_all = 0;
ospf_restart_spf(ospf);
}
return CMD_SUCCESS;
}