有没有碰到过这样的故障呀，急！！！

shelly114

有没有人碰到过这样的现象？
用户路由器有两条链路互为备份，一条为电信的帧中继电路（百灵达MODEM接入），另一条为联通的SDH（V.35-G.703转换器）,但两条同时用时，两条都显示链路协议断，无法使用，拔掉一根另一根还是不能用，要把路由器、转换器重启后，用随便哪条都可以。用户路由器跑的是ospf协议。配置如下：
router1#sh run
Building configuration...

Current configuration : 1950 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
service password-encryption
ip subnet-zero

interface FastEthernet0/0
ip address 10.10.250.254 255.255.255.0
duplex auto
speed auto
!
interface Serial0/0
no ip address
encapsulation frame-relay
frame-relay lmi-type ansi
!
interface Serial0/0.1 point-to-point
ip address 10.20.255.158 255.255.255.252
ip ospf cost 100
frame-relay interface-dlci 200
!
!
interface Serial0/1
ip address 10.200.255.158 255.255.255.252
!
router ospf 1
log-adjacency-changes
summary-address 10.10.192.0 255.255.192.0
redistribute static subnets
network 10.20.255.156 0.0.0.3 area 0
network 10.10.250.0 0.0.0.255 area 10
network 10.200.255.156 0.0.0.3 area 0
!
ip classless
ip http server
ip pim bidir-enable
!
!


router2#sh run
Building configuration...

Current configuration : 6569 bytes
!
! Last configuration change at 08:51:03 UTC Sat Mar 25 2006
! NVRAM config last updated at 21:00:00 UTC Tue Mar 21 2006
!
version 12.1
no service single-slot-reload-enable
service timestamps debug uptime
service timestamps log datetime
service password-encryption
!

!

!
!
!
ip subnet-zero
ip cef
!
!
!
!
interface Serial1/0/0
bandwidth 2048
no ip address
encapsulation frame-relay
no fair-queue
serial restart-delay 0
frame-relay lmi-type ansi
!
interface Serial1/0/0.1 point-to-point
ip address 10.20.255.157 255.255.255.252
ip ospf cost 100
frame-relay interface-dlci 200
!
interface Serial4/0/3
ip address 10.200.255.157 255.255.255.252
serial restart-delay 0
!
router ospf 1
log-adjacency-changes
redistribute static subnets
network 10.20.255.0 0.0.0.255 area 0
network 10.200.255.0 0.0.0.255 area 0
default-information originate always
!