求助，OSPF实验题

UID: 80488

小弟自学CCNP，有一个OSPF配置问题，请大虾们帮忙，赐教，哪怕给点儿意见也好


Montreal   Serial 0/0/0     192.168.100.1/24

Ottawa     Serial 0/0/0     192.168.100.2/24
                Loopback 0     172.16.1.1/24
                Serial 0/0/1      192.168.1.1/24

Toronto    Serial 0/0/1      192.168.1.2/24
                Serial 0/1/0       192.168.200.1/24

Vancouver  Serial 0/0/0    192.168.200.2/24
                  Loopback 1    45.234.56.1/26
                  Loopback 2    45.234.56.65/26
                  Loopback 3    45.234.56.129/26
                  Loopback 4    45.234.56.193/26
                  Loopback 5    45.234.57.1/26
                  Loopback 6    45.234.57.65/26
                  Loopback 7    45.234.57.129/26
                  Loopback 8    45.234.57.193/26
Configuration Requirements
1. Configure the interfaces in the diagram with the IP addresses as specified in Table 1.
           o Ottawa‟s loopback interface is not part of an OSPF area.
           o Vancouver‟s loopback interfaces should be configured in area 300.
2. Configure OSPF with interfaces in the areas shown Figure 1 and described in Table 1.
3. Configure area 100 as an NSSA area.
4. Create virtual links as necessary to achieve full connectivity.
5. Use MD5 authentication with the keyword “cisco” over the link between Toronto and Vancouver.
6. Modify the link between Ottawa and Toronto to have „hello‟ and „dead‟ timers that are double the default values.
7. Redistribute the loopback network on router Ottawa into OSPF.
8. Ensure loopback interfaces are advertised with the correct subnet mask.
9. Configure the router Vancouver loopback interfaces to be in area 300. Summarise this area with the most efficient summary.
10. Run a Tcl script on all routers to verify connectivity.
以上是配置要求，当小弟配置到第四部的时候，就怎么也不能实现全部连接，以下是小弟的配置信息，希望大家可以给点儿意见(因为小弟第四步配置出错，所以只有前三步的内容）：
R1：conf t
hostname Montreal
interface serial 0/0/0
ip address 192.168.100.1 255.255.255.0
clock rate 64000
no shutdown
exit
router ospf 1
router-id 1.1.1.1
network 192.168.100.0 0.0.0.255 area 100
area 100 nssa
R2:conf thostname Ottawa
interface serial 0/0/0
ip address 192.168.100.2 255.255.255.0
clock rate 64000
no shutdown
exit
interface serial 0/0/1
ip address 192.168.1.1 255.255.255.0
clock rate 64000
no shutdown
exit
interface loopback 0
ip address 172.16.1.1 255.255.255.0
exit
router ospf 1
router-id 2.2.2.2
network 192.168.100.0 0.0.0.255 area 100
network 192.168.1.0 0.0.0.255 area 0
area 100 nssa
exit
int lo0
ip ospf network point-to-point
R3:conf t
hostname Toronto
int s0/0/1
ip add 192.168.1.2 255.255.255.0
no shut
exit
int s0/1/0
ip add 192.168.200.1 255.255.255.0
clock rate 64000
no shut
exit
router ospf 1
router-id 3.3.3.3
network 192.168.200.0 0.0.0.255 area 200
network 192.168.1.0 0.0.0.255 area 0
R4:conf t
hostname Vancouver
int lo1
ip add 45.234.56.1 255.255.255.192
int lo2
ip add 45.234.56.65 255.255.255.192
int lo3
ip add 45.234.56.129 255.255.255.192
int lo4
ip add 45.234.56.193 255.255.255.192
int lo5
ip add 45.234.57.1 255.255.255.192
int lo6
ip add 45.234.57.65 255.255.255.192
int lo7
ip add 45.234.57.129 255.255.255.192
int lo8
ip add 45.234.57.193 255.255.255.192
int s0/0/0
ip add 192.168.200.2 255.255.255.0
no shut
exit
router ospf 1
router-id 4.4.4.4
network 192.168.200.0 0.0.0.255 area 200
network 45.234.0.0 0.0.0.63 area 300

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