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| author | Andrew J. Schorr <ajschorr@alumni.princeton.edu> | 2006-07-27 22:29:06 +0000 |
|---|---|---|
| committer | Andrew J. Schorr <ajschorr@alumni.princeton.edu> | 2006-07-27 22:29:06 +0000 |
| commit | 1670008b5401eca13456f914bba7331c3b7b2893 (patch) | |
| tree | a0a57a0bf58b904602a10b9812f27745e8861927 /ospfd/ospfd.c | |
| parent | 6d691129594f87958ecaf4169b2e1f62f90d3616 (diff) | |
| download | quagga-1670008b5401eca13456f914bba7331c3b7b2893.tar.bz2 quagga-1670008b5401eca13456f914bba7331c3b7b2893.tar.xz | |
[ospfd] Bug #288: do not change router ID unless forced by manual configuration
2006-07-27 Andrew J. Schorr <ajschorr@alumni.princeton.edu>
* ospfd.c: (ospf_router_id_update) Fix and document the algorithm for
selecting the router ID: if there is not a statically configured ID,
then stick to the most recent value to avoid disruptive changes.
This should fix bug #288.
Diffstat (limited to 'ospfd/ospfd.c')
| -rw-r--r-- | ospfd/ospfd.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/ospfd/ospfd.c b/ospfd/ospfd.c index ef8272b0..95615e4a 100644 --- a/ospfd/ospfd.c +++ b/ospfd/ospfd.c @@ -84,8 +84,17 @@ ospf_router_id_update (struct ospf *ospf) router_id_old = ospf->router_id; + /* Select the router ID based on these priorities: + 1. Statically assigned router ID is always the first choice. + 2. If there is no statically assigned router ID, then try to stick + with the most recent value, since changing router ID's is very + disruptive. + 3. Last choice: just go with whatever the zebra daemon recommends. + */ if (ospf->router_id_static.s_addr != 0) router_id = ospf->router_id_static; + else if (ospf->router_id.s_addr != 0) + router_id = ospf->router_id; else router_id = router_id_zebra; |