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Change default LOCAL_PREF attribute to 100 (suggested value by RFC 4277).

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This commit is contained in:
Ondrej Zajicek 2009-12-21 11:50:42 +01:00
parent ba9a122142
commit fbcb7d5faf
3 changed files with 9 additions and 5 deletions
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9
doc/bird.sgml
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@ -1043,9 +1043,12 @@ for each neighbor using the following configuration parameters:
Discriminator to be used during route selection when the MED attribute Discriminator to be used during route selection when the MED attribute
is missing. Default: 0. is missing. Default: 0.
<tag>default bgp_local_pref <m/number/</tag> Value of the Local Preference <tag>default bgp_local_pref <m/number/</tag> A default value
to be used during route selection when the Local Preference attribute for the Local Preference attribute. It is used when a new
is missing. Default: 0. Local Preference attribute is attached to a route by the BGP
protocol itself (for example, if a route is received through
eBGP and therefore does not have such attribute). Default: 100
(0 in pre-1.2.0 versions of BIRD).
</descrip> </descrip>
<sect1>Attributes <sect1>Attributes

4
proto/bgp/attrs.c
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@ -871,7 +871,7 @@ bgp_create_attrs(struct bgp_proto *p, rte *e, ea_list **attrs, struct linpool *p
else else
set_next_hop(z, rta->gw); set_next_hop(z, rta->gw);
bgp_set_attr(ea->attrs+3, BA_LOCAL_PREF, 0); bgp_set_attr(ea->attrs+3, BA_LOCAL_PREF, p->cf->default_local_pref);
return 0; /* Leave decision to the filters */ return 0; /* Leave decision to the filters */
} }
@ -1421,7 +1421,7 @@ bgp_decode_attrs(struct bgp_conn *conn, byte *attr, unsigned int len, struct lin
/* If there's no local preference, define one */ /* If there's no local preference, define one */
if (!(seen[0] & (1 << BA_LOCAL_PREF))) if (!(seen[0] & (1 << BA_LOCAL_PREF)))
bgp_attach_attr(&a->eattrs, pool, BA_LOCAL_PREF, 0); bgp_attach_attr(&a->eattrs, pool, BA_LOCAL_PREF, bgp->cf->default_local_pref);
return a; return a;

1
proto/bgp/config.Y
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@ -44,6 +44,7 @@ bgp_proto_start: proto_start BGP {
BGP_CFG->enable_as4 = 1; BGP_CFG->enable_as4 = 1;
BGP_CFG->capabilities = 2; BGP_CFG->capabilities = 2;
BGP_CFG->advertise_ipv4 = 1; BGP_CFG->advertise_ipv4 = 1;
BGP_CFG->default_local_pref = 100;
} }
; ;