ofpf与三层交换问题

szmabcd

如图所示：ISPEdge 、R1、R2、SW1 、SW2各接口地址如图上所示且均运行OSPF并通告相应接口，各设备配置如下：
ISPEdge:

IPSEdge#show run
IPSEdge#show running-config
Building configuration...

Current configuration : 853 bytes
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname IPSEdge

interface Serial0/3/0
ip address 192.168.10.1 255.255.255.0
clock rate 64000
!
interface Serial0/3/1
ip address 192.168.11.1 255.255.255.0
clock rate 64000

router ospf 110
router-id 1.1.1.1
log-adjacency-changes
network 192.168.10.0 0.0.0.255 area 0
network 192.168.11.0 0.0.0.255 area 0



R1 -----:

hostname R1

spanning-tree mode pvst

interface FastEthernet0/0
ip address 192.168.13.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 192.168.14.1 255.255.255.0
duplex auto
speed auto
!
interface Serial0/3/0
ip address 192.168.10.2 255.255.255.0

router ospf 110
router-id 2.2.2.2
log-adjacency-changes
network 192.168.10.0 0.0.0.255 area 0
network 192.168.13.0 0.0.0.255 area 0
network 192.168.14.0 0.0.0.255 area 0

ip route 0.0.0.0 0.0.0.0 FastEthernet0/0 100

ip route 0.0.0.0 0.0.0.0 FastEthernet1/0 200  //此两条命令是？？？

R2---:

R2#show running-config
Building configuration...

Current configuration : 787 bytes
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R2

spanning-tree mode pvst

interface FastEthernet0/1
ip address 192.168.15.1 255.255.255.0
duplex auto
speed auto
!
interface Serial0/3/0
ip address 192.168.11.2 255.255.255.0

router ospf 110
router-id 3.3.3.3
log-adjacency-changes
network 192.168.11.0 0.0.0.255 area 0
network 192.168.15.0 0.0.0.255 area 0
network 192.168.16.0 0.0.0.255 area 0

ip route 0.0.0.0 0.0.0.0 FastEthernet0/0 200

ip route 0.0.0.0 0.0.0.0 FastEthernet1/0 100   //此两条命令是？？？

3SW1----              创建了VLAN 18 ,20,30,40,50, vtp mode sever /domain cisco

3SW1#show running-config
Building configuration...

Current configuration : 2987 bytes
!
version 12.2
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname 3SW1

ip dhcp excluded-address 192.168.20.1 192.168.20.10
ip dhcp excluded-address 192.168.30.1 192.168.30.10
ip dhcp excluded-address 192.168.40.1 192.168.40.10
ip dhcp excluded-address 192.168.50.1 192.168.50.10
!
ip dhcp pool vlan20
network 192.168.20.0 255.255.255.0
default-router 192.168.20.1
ip dhcp pool vlan30
network 192.168.30.0 255.255.255.0
default-router 192.168.30.1
ip dhcp pool vlan40
network 192.168.40.0 255.255.255.0
default-router 192.168.40.1
ip dhcp pool vlan50
network 192.168.50.0 255.255.255.0
default-router 192.168.50.1

spanning-tree mode pvst

interface FastEthernet0/1
no switchport
ip address 192.168.13.2 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/2
no switchport
ip address 192.168.15.2 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/3
channel-group 1 mode on
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet0/4
channel-group 1 mode on
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet0/5
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet0/6
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet0/7
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet0/8
switchport access vlan 18
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/9
switchport access vlan 18
switchport mode access
spanning-tree portfast
!

interface Port-channel 1
switchport trunk encapsulation dot1q
switchport mode trunk

interface Vlan18
ip address 192.168.18.1 255.255.255.0
!
interface Vlan20
ip address 192.168.20.1 255.255.255.0
!
interface Vlan30
ip address 192.168.30.1 255.255.255.0
!
interface Vlan40
ip address 192.168.40.1 255.255.255.0
!
interface Vlan50
ip address 192.168.50.1 255.255.255.0
!
router ospf 110
router-id 4.4.4.4
log-adjacency-changes
network 192.168.13.0 0.0.0.255 area 0
network 192.168.15.0 0.0.0.255 area 0
network 192.168.18.0 0.0.0.255 area 0
network 192.168.20.0 0.0.0.255 area 0
network 192.168.30.0 0.0.0.255 area 0
network 192.168.40.0 0.0.0.255 area 0
network 192.168.50.0 0.0.0.255 area 0

ip route 0.0.0.0 0.0.0.0 Vlan2 100

ip route 0.0.0.0 0.0.0.0 Vlan1 200     //如果只有VLAN 1 ,VLAN 2 ,这两条命是做什么？

3SW2-----               vtp mode sever /domain cisco


3SW2#show run
3SW2#show running-config
Building configuration...

Current configuration : 2090 bytes
!
version 12.2
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname 3SW2

spanning-tree mode pvst
!
!
!
!
interface FastEthernet0/1
no switchport
ip address 192.168.16.2 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/2
no switchport
ip address 192.168.14.2 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/3
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet0/4
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet0/5
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet0/6
switchport trunk encapsulation dot1q
switchport mode trunk

!
interface GigabitEthernet0/1
!
interface GigabitEthernet0/2

interface Vlan18
ip address 192.168.18.2 255.255.255.0
!
interface Vlan20
ip address 192.168.20.2 255.255.255.0
!
interface Vlan30
ip address 192.168.30.2 255.255.255.0
!
interface Vlan40
ip address 192.168.40.2 255.255.255.0
!
interface Vlan50
ip address 192.168.50.2 255.255.255.0
!
router ospf 110
router-id 5.5.5.5
log-adjacency-changes
network 192.168.14.0 0.0.0.255 area 0
network 192.168.16.0 0.0.0.255 area 0
network 192.168.18.0 0.0.0.255 area 0
network 192.168.20.0 0.0.0.255 area 0
network 192.168.30.0 0.0.0.255 area 0
network 192.168.40.0 0.0.0.255 area 0
network 192.168.50.0 0.0.0.255 area 0

ip route 0.0.0.0 0.0.0.0 Vlan2 100

ip route 0.0.0.0 0.0.0.0 Vlan1 200     //如果只有VLAN 1 ,VLAN 2 ,这两条命是做什么？

3SW1上的ospf邻居关系：

3SW1#show ip ospf neighbor
  
各VLAN的邻居怎么是成对出现啊？

有以下几个问题请教，谢谢！

1.R1与R2中的  ip route 0.0.0.0 0.0.0.0 FastEthernet0/0 200

           ip route 0.0.0.0 0.0.0.0 FastEthernet1/0 100   是做什么用的？

2.3SW1与3SW2中的     ip route 0.0.0.0 0.0.0.0 Vlan2 100      有何用处？？？

                                 ip route 0.0.0.0 0.0.0.0 Vlan1 200

3.3SW1与3SW2中各VLAN之间的邻剧关系为何是这样的？

4.各交机机之间的链路均是trunk，完全收敛后

                           为何3SW1、3SW2与SW1这三个交换机没有阻塞端口？

                            为何3SW1、3SW2与SW2这三个交换机没有阻塞端口？

                             为何3SW1、3SW2与SW3这三个交换机没有阻塞端口？

5.有时关闭模拟器重新启动时，3SW1与3SW2之间会显示这样的信息：

             Vlan50 from EXSTART to Down: Interface down or detached

以上问题求解，谢谢！

szmabcd

在ISPEdge上建环回口地址1.1.1.1并通告进ospf中，在pc0上tracert 1.1.1.1时，

可能从以下接口走：

192.168.13.1
192.168.14.1
192.168.15.1
192.168.16.1

怎么会这样呢？？？？

如果要固定vlan 10 vlan 20从R1走，vlan 30 vlan 40从R2走，如何做？？？

szmabcd

求解啊

hbsyjhb

看的眼花了

szmabcd

hbsyjhb 发表于 2013-5-3 18:36

                               
登录/注册后可看大图

看的眼花了

头晕也得看，还有更复杂的呢，想搞这行的话

lingyun0606

指的是默认路由，

haopengzhanchi

这是浮动静态路由！！

yanjin1991

1，浮动静态路由，AD值不同，大的是做备份用的。
2，也是浮动路由，备份用的。
3，你看你的邻接关系状态，怎么是EXSTART状态？
4，你做了聚合啊，聚合了就不 会阻塞了呀
还有，你要固定某些网段走哪些路径，可以使用PBR

不知道说的对不对，请大神指点