Possible pug in zebra

[Nichols, Alan]

Hi Bug-Zebra,

I am having extreme difficulty with the set up of zebra OSPF
and parallel network interfaces (interfaces in the same subnet).

Here are the config files. and the ifconfig set up.

We are using zebra 0.93b.

The problem is that the second ethernet interface eth1, does 
not get routes , and we get a message in the log that the 
ospf packets have been received on the wrong interface (!)

error message:

>2002/11/05 13:14:14 warnings: OSPF: Packet from [164.32.247.184] received on 
>wrong link eth1


Other OSPF implementations deal with paralell interfaces
in another way, only ONE interface in a net is multicasted
as OSPF router, if that interface fails then the other interface 
will be used. The other interface is used (just) for traffic/load
balancing.

Is ZEBRA supposed to work with parallel interfaces, (do I have 
a configuration problem ?), is there a trick to it ? 

ifconfig

dummy0    Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          inet addr:10.206.176.81  Bcast:10.206.176.127  Mask:255.255.255.192
          inet6 addr: fe80::200:ff:fe00:0/10 Scope:Link
          UP BROADCAST RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:241 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:18678 (18.2 Kb)

eth0      Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          inet addr:164.32.247.160  Bcast:164.32.247.191  Mask:255.255.255.192
          inet6 addr: fe80::200:ff:fe00:0/10 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:4541 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2415 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:342252 (334.2 Kb)  TX bytes:350485 (342.2 Kb)

eth1      Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          inet addr:164.32.247.161  Bcast:164.32.247.191  Mask:255.255.255.192
          inet6 addr: fe80::200:ff:fe00:0/10 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2138 errors:0 dropped:0 overruns:0 frame:0
          TX packets:242 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:212668 (207.6 Kb)  TX bytes:23112 (22.5 Kb)
          Interrupt:3

hsi2      Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          inet addr:10.206.4.17  Mask:255.255.255.192
          inet6 addr: fe80::200:ff:fe00:0/10 Scope:Link
          UP RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:999 errors:0 dropped:0 overruns:0 frame:0
          TX packets:740 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:81522 (79.6 Kb)  TX bytes:83596 (81.6 Kb)
          Interrupt:6

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:1500  Metric:1
          RX packets:89 errors:0 dropped:0 overruns:0 frame:0
          TX packets:89 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:8400 (8.2 Kb)  TX bytes:8400 (8.2 Kb)


error message:

>2002/11/05 13:14:14 warnings: OSPF: Packet from [164.32.247.184] received on 
>wrong link eth1


zebra.conf

! -*- zebra -*-
!
! zebra sample configuration file
!
! $Id: zebra.conf.sample,v 1.14 1999/02/19 17:26:38 developer Exp $
!
hostname G8SXH
password xx
enable password yy

debug zebra events
debug zebra kernel

!
! Interface's description.
!
interface eth0
  ip address 164.32.247.160/26
  multicast
interface eth1
  ip address 164.32.247.161/26
  multicast
interface hsi2
interface lo
interface dummy0
  ip address 10.206.176.81/26
  multicast
! description test of desc.
!
! interface sit0
! multicast

log file /var/log/zebra.log
access-list term permit 127.0.0.1/32
access-list term deny any

line vty
  access-class term





ospf.conf

!
! Zebra configuration saved from vty
!   2002/11/05 13:54:13
!
hostname ospfd
password 8 xxyy
enable password 8 xxyy
log stdout
log record-priority
service advanced-vty
service password-encryption
!
!
!
interface lo
!
interface hsi2
 ip ospf network non-broadcast
 ip ospf authentication-key H323LANM
 ip ospf cost 1
 ip ospf hello-interval 2
 ip ospf dead-interval 8
 ip ospf priority 0
!
interface dummy0
 ip ospf authentication-key H323LANM
 ip ospf cost 1
 ip ospf hello-interval 2
 ip ospf dead-interval 8
 ip ospf priority 0
!
!
interface eth0
 ip ospf authentication-key H323LANM
 ip ospf cost 2
 ip ospf hello-interval 2
 ip ospf dead-interval 8
 ip ospf priority 0
!
interface eth1
 ip ospf authentication-key H323LANM
 ip ospf cost 2
 ip ospf hello-interval 2
 ip ospf dead-interval 8
 ip ospf priority 0
!
interface sit0
!
router ospf
 ospf router-id 10.206.176.81
 passive-interface lo
! passive-interface dummy0
 network 10.206.4.0/26 area 0
 network 164.32.247.128/26 area 0
 network 10.206.176.64/26 area 0
 area 0 authentication
!
line vty
!

Al Nichols.