diff options
| -rw-r--r-- | ospfd/ChangeLog | 6 | ||||
| -rw-r--r-- | ospfd/ospf_packet.c | 36 |
2 files changed, 41 insertions, 1 deletions
diff --git a/ospfd/ChangeLog b/ospfd/ChangeLog index bc17a605..9dafb96c 100644 --- a/ospfd/ChangeLog +++ b/ospfd/ChangeLog @@ -1,4 +1,8 @@ -2003-12-08 Mattias Amnefelt <mattiasa@kth.se? +2004-02-11 Vadim Suraev <vadim.suraev@terayon.com> + * ospf_packet.c (ospf_ls_upd): Router should flush received network + LSA if it was originated with older router-id ([zebra 14710] #6). + +2003-12-08 Mattias Amnefelt <mattiasa@kth.se> * ospf_packet.c: (ospf_recv_packet) OpenBSD now leaves iph.ip_len network byte order. diff --git a/ospfd/ospf_packet.c b/ospfd/ospf_packet.c index 86ed3878..528e8d38 100644 --- a/ospfd/ospf_packet.c +++ b/ospfd/ospf_packet.c @@ -1699,6 +1699,42 @@ ospf_ls_upd (struct ip *iph, struct ospf_header *ospfh, } } #endif /* HAVE_OPAQUE_LSA */ + /* It might be happen that received LSA is self-originated network LSA, but + * router ID is cahnged. So, we should check if LSA is a network-LSA whose + * Link State ID is one of the router's own IP interface addresses but whose + * Advertising Router is not equal to the router's own Router ID + * According to RFC 2328 12.4.2 and 13.4 this LSA should be flushed. + */ + + if(lsa->data->type == OSPF_NETWORK_LSA) + { + listnode oi_node; + int Flag = 0; + + for(oi_node = listhead(oi->ospf->oiflist); oi_node; oi_node = nextnode(oi_node)) + { + struct ospf_interface *out_if = getdata(oi_node); + if(out_if == NULL) + break; + + if((IPV4_ADDR_SAME(&out_if->address->u.prefix4, &lsa->data->id)) && + (!(IPV4_ADDR_SAME(&oi->ospf->router_id, &lsa->data->adv_router)))) + { + if(out_if->network_lsa_self) + { + ospf_lsa_flush_area(lsa,out_if->area); + if(IS_DEBUG_OSPF_EVENT) + zlog_info ("ospf_lsa_discard() in ospf_ls_upd() point 9: lsa %p Type-%d", + lsa, (int) lsa->data->type); + ospf_lsa_discard (lsa); + Flag = 1; + } + break; + } + } + if(Flag) + continue; + } /* (5) Find the instance of this LSA that is currently contained in the router's link state database. If there is no |