I am running Quagga 96.4 with OSPF. I am running SuSE Linux SLES8 SP03 in
a native LPAR. I am using 2 OSA/e 100-megabit Ethernet interfaces as shown
below:
eth0 has an IP address of 10.28.93.50
eth1 has an IP address of 10.28.91.50
Since these are two equal cost routes, I would expect OSPF to prefer eth1
since it has a lower IP address. However, Quagga's OSPF seems to prefer
the route that has the lower interface name, such as eth0. This is not
correct. I can easily correct this by defining artificial OSPF costs on
the interfaces to prefer eth1 over eth0.
Has anyone experienced this problem or have any advice. Any comment would
be much appreciated. Thanks.
Peter
Following are some config info:
Current configuration:
!
hostname quagga
password quagga
enable password quagga
log file /var/log/quagga/quagga.log
no ip forwarding
no ipv6 forwarding
hostname mainpepl
enable password quagga
log file /var/log/quagga/ospfd.log
!
interface ctc0
description CTC Connection to PEPTEST
ip address 161.186.86.6/30
ip ospf network point-to-point
!
interface ctc1
description CTC Connection to PEPPROD
ip address 161.186.86.14/30
ip ospf network point-to-point
!
interface dummy0
description MAINPEPL VIPA IP Dummy Device
ip address 161.186.96.50/24
!
interface eth0
description OSA/e 100-mb Ethernet to White Core Switch
ip address 10.28.93.50/24
ip ospf priority 0
!
interface eth1
description OSA/e/100-mb Ethernet to Blue Core Switch
ip address 10.28.91.50/24
ip ospf priority 0
!
interface lo
!
interface sit0
!
router ospf
ospf router-id 161.186.96.50
compatible rfc1583
redistribute connected
passive-interface ctc0
passive-interface ctc1
network 10.28.91.0/24 area 0.0.0.0
network 10.28.93.0/24 area 0.0.0.0
network 161.186.96.0/24 area 0.0.0.0
dummy0 Link encap:Ethernet HWaddr 00:00:00:00:00:00
inet addr:161.186.96.50 Bcast:161.186.96.255 Mask:255.255.255.0
inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:61008 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:4758328 (4.5 Mb)
eth0 Link encap:Ethernet HWaddr 00:06:29:FB:C0:9F
inet addr:10.28.93.50 Bcast:10.28.93.255 Mask:255.255.255.0
inet6 addr: fe80::206:29ff:fefb:c09f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:373265 errors:0 dropped:0 overruns:0 frame:0
TX packets:593154 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:104294405 (99.4 Mb) TX bytes:83024141 (79.1 Mb)
eth1 Link encap:Ethernet HWaddr 00:02:55:89:38:ED
inet addr:10.28.91.50 Bcast:10.28.91.255 Mask:255.255.255.0
inet6 addr: fe80::202:55ff:fe89:38ed/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:12215 errors:0 dropped:0 overruns:0 frame:0
TX packets:3656 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:1031063 (1006.8 Kb) TX bytes:813943 (794.8 Kb)
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