I have following configuration.
+---+ 172.16.255.0/24 +---+ 192.168.128.0/24 +---+
| R1+----<Bridged WAN>----+ R2+---------+--------+ R3+---+
+-+-+.1 .3+-+-+.251 | .252+---+ |192.168.120.0/24
|.1 192.168.253.0/24 |.3 | +---+ |
+------<ISDN backup>------+ +--------+ R4+---+
.253+---+
(each IOS=12.1(2))
R2 has configuration like this.
interface Ethernet0/0
ip address 172.16.255.3 255.255.255.0
!
interface Ethernet0/1
ip address 192.168.128.251 255.255.255.0
!
interface BRI 1/0
ip address 192.168.253.3 255.255.255.0
<several dialer configuration>
!
router rip
redistribute static
network 172.16.0.0
network 192.168.128.0
!
ip route 0.0.0.0 0.0.0.0 192.168.253.1 200
ip route 172.16.0.0 0.0.255.255 0.0.0.0
!
Normally, it receives 0.0.0.0 route by RIP from 172.16.255.1.
And R3 and R4 receives 172.16.0.0/16(auto summarized) from R2.
When Ethernet0/0 protocol goes down, 172.16.0.0/16 is not appear even
ISDN backup connection established.
But, once I add a 24bit prefix network as static route, for example,
ip route 172.16.25.0 0.0.0.255 0.0.0.0
R3 and R4 gets route 172.16.0.0/16.
Is it bug of IOS?
-----
Kouji Baba
This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 04:13:07 EDT