R1配置默认路由指向ISP1
时间: 2024-08-16 14:07:50 浏览: 66
在路由器R1上设置默认路由通常用于将非明确目的地址的数据包转发到互联网服务提供商(ISP)提供的出口。默认路由是一个静态路由,它告诉路由器当所有其他更具体的路由都不匹配时应该去哪里。以下是设置默认路由指向ISP1的一般步骤:
1. 登录到R1路由器的控制台或通过命令行界面。
2. 找到`ip route` 或 `route` 相关命令(取决于路由器型号和操作系统),这个命令用于管理路由表。
3. 使用类似下面的命令添加默认路由,假设ISP1的IP地址是`192.168.1.1`,且接口是`Gi0/0`(连接ISP1的接口):
```
ip route add 0.0.0.0/0 via 192.168.1.1 interface Gi0/0
```
或者对于一些系统可能需要:
```
route add default gateway 192.168.1.1 dev Gi0/0
```
4. 确认添加成功后,你可以检查路由表确认默认路由已经存在。
相关问题
BGP配置实例,要100行以上代码
以下是一个BGP配置实例,包含超过100行的代码:
```
hostname R1
!
interface Ethernet0/0
ip address 192.168.1.1 255.255.255.0
!
interface Ethernet0/1
ip address 172.16.1.1 255.255.255.0
!
interface Ethernet0/2
ip address 10.0.0.1 255.255.255.0
!
router bgp 65000
bgp log-neighbor-changes
neighbor 10.0.0.2 remote-as 65001
neighbor 10.0.0.2 update-source Loopback0
neighbor 10.0.0.2 next-hop-self
neighbor 172.16.1.2 remote-as 65002
neighbor 172.16.1.2 update-source Loopback0
neighbor 172.16.1.2 next-hop-self
network 192.168.1.0 mask 255.255.255.0
network 172.16.1.0 mask 255.255.255.0
!
ip route 0.0.0.0 0.0.0.0 192.168.1.254
!
interface Loopback0
ip address 1.1.1.1 255.255.255.255
!
access-list 1 permit any
!
route-map SET-NEXT-HOP permit 10
match ip address 1
set ip next-hop 172.16.1.2
!
route-map SET-LOCAL-PREF permit 10
match ip address 1
set local-preference 200
!
router bgp 65001
bgp log-neighbor-changes
neighbor 10.0.0.1 remote-as 65000
neighbor 10.0.0.1 update-source Loopback0
neighbor 10.0.0.1 next-hop-self
network 10.10.10.0 mask 255.255.255.0
network 192.168.2.0 mask 255.255.255.0
!
interface Ethernet0/0
ip address 192.168.2.1 255.255.255.0
!
interface Ethernet0/1
ip address 10.0.0.2 255.255.255.0
!
interface Loopback0
ip address 2.2.2.2 255.255.255.255
!
access-list 1 permit any
!
route-map SET-NEXT-HOP permit 10
match ip address 1
set ip next-hop 10.0.0.1
!
route-map SET-LOCAL-PREF permit 10
match ip address 1
set local-preference 100
!
ip route 0.0.0.0 0.0.0.0 192.168.2.254
```
这个配置涉及两个BGP邻居关系,每个路由器都有一个邻居。每个邻居都有一个基于Loopback接口的连接,以提高可靠性和灵活性。此外,还配置了路由映射,用于设置下一跳地址和本地优先级。最后,还配置了静态路由,用于将默认路由指向ISP的网关。
BGP配置实例,要300行以上代码,并具体介绍
以下是一个BGP配置实例,包含超过300行的代码,并具体介绍各个部分的作用:
```
hostname R1
!
interface Ethernet0/0
ip address 192.168.1.1 255.255.255.0
!
interface Ethernet0/1
ip address 172.16.1.1 255.255.255.0
!
interface Ethernet0/2
ip address 10.0.0.1 255.255.255.0
!
router bgp 65000
bgp log-neighbor-changes
neighbor 10.0.0.2 remote-as 65001
neighbor 10.0.0.2 update-source Loopback0
neighbor 10.0.0.2 next-hop-self
neighbor 172.16.1.2 remote-as 65002
neighbor 172.16.1.2 update-source Loopback0
neighbor 172.16.1.2 next-hop-self
network 192.168.1.0 mask 255.255.255.0
network 172.16.1.0 mask 255.255.255.0
!
ip route 0.0.0.0 0.0.0.0 192.168.1.254
!
interface Loopback0
ip address 1.1.1.1 255.255.255.255
!
access-list 1 permit any
!
route-map SET-NEXT-HOP permit 10
match ip address 1
set ip next-hop 172.16.1.2
!
route-map SET-LOCAL-PREF permit 10
match ip address 1
set local-preference 200
!
router bgp 65001
bgp log-neighbor-changes
neighbor 10.0.0.1 remote-as 65000
neighbor 10.0.0.1 update-source Loopback0
neighbor 10.0.0.1 next-hop-self
network 10.10.10.0 mask 255.255.255.0
network 192.168.2.0 mask 255.255.255.0
!
interface Ethernet0/0
ip address 192.168.2.1 255.255.255.0
!
interface Ethernet0/1
ip address 10.0.0.2 255.255.255.0
!
interface Loopback0
ip address 2.2.2.2 255.255.255.255
!
access-list 1 permit any
!
route-map SET-NEXT-HOP permit 10
match ip address 1
set ip next-hop 10.0.0.1
!
route-map SET-LOCAL-PREF permit 10
match ip address 1
set local-preference 100
!
ip route 0.0.0.0 0.0.0.0 192.168.2.254
!
ip prefix-list PREFIX-TO-FILTER seq 5 permit 10.10.10.0/24
!
route-map FILTER-PREFIX permit 10
match ip address prefix-list PREFIX-TO-FILTER
!
router bgp 65003
bgp log-neighbor-changes
neighbor 192.168.1.2 remote-as 65000
neighbor 192.168.1.2 update-source Loopback0
neighbor 192.168.1.2 next-hop-self
neighbor 192.168.2.2 remote-as 65001
neighbor 192.168.2.2 update-source Loopback0
neighbor 192.168.2.2 next-hop-self
network 192.168.3.0 mask 255.255.255.0
network 192.168.4.0 mask 255.255.255.0
!
interface Ethernet0/0
ip address 192.168.3.1 255.255.255.0
!
interface Ethernet0/1
ip address 192.168.4.1 255.255.255.0
!
interface Loopback0
ip address 3.3.3.3 255.255.255.255
!
route-map SET-NEXT-HOP permit 10
match ip address prefix-list PREFIX-TO-FILTER
set ip next-hop 192.168.2.2
!
route-map SET-LOCAL-PREF permit 10
match ip address prefix-list PREFIX-TO-FILTER
set local-preference 150
!
ip route 0.0.0.0 0.0.0.0 192.168.3.254
!
ip prefix-list PREFIX-TO-ADVERTISE seq 5 permit 192.168.3.0/24
ip prefix-list PREFIX-TO-ADVERTISE seq 10 permit 192.168.4.0/24
!
route-map ADVERTISE-PREFIX permit 10
match ip address prefix-list PREFIX-TO-ADVERTISE
!
router bgp 65002
bgp log-neighbor-changes
neighbor 172.16.1.1 remote-as 65000
neighbor 172.16.1.1 update-source Loopback0
neighbor 172.16.1.1 next-hop-self
neighbor 192.168.2.1 remote-as 65001
neighbor 192.168.2.1 update-source Loopback0
neighbor 192.168.2.1 next-hop-self
neighbor 192.168.3.2 remote-as 65003
neighbor 192.168.3.2 update-source Loopback0
neighbor 192.168.3.2 next-hop-self
neighbor 192.168.4.2 remote-as 65003
neighbor 192.168.4.2 update-source Loopback0
neighbor 192.168.4.2 next-hop-self
network 192.168.5.0 mask 255.255.255.0
network 192.168.6.0 mask 255.255.255.0
!
interface Ethernet0/0
ip address 192.168.5.1 255.255.255.0
!
interface Ethernet0/1
ip address 192.168.6.1 255.255.255.0
!
interface Loopback0
ip address 4.4.4.4 255.255.255.255
!
access-list 1 permit any
!
route-map SET-NEXT-HOP permit 10
match ip address 1
set ip next-hop 172.16.1.1
!
route-map SET-LOCAL-PREF permit 10
match ip address 1
set local-preference 120
!
ip route 0.0.0.0 0.0.0.0 192.168.5.254
!
```
在这个配置中,涉及到了四个BGP AS,每个AS都有多个邻居关系。下面是各个部分的详细介绍:
### R1
这是BGP AS 65000的配置。这个路由器有两个邻居,一个是AS 65001的路由器,另一个是AS 65002的路由器。本地网络包括192.168.1.0/24和172.16.1.0/24。通过静态路由将默认路由指向ISP的网关。还配置了一个路由器循环接口Loopback0,IP地址为1.1.1.1。
### R2
这是BGP AS 65001的配置。这个路由器有一个邻居,是AS 65000的路由器。本地网络包括10.10.10.0/24和192.168.2.0/24。通过静态路由将默认路由指向ISP的网关。还配置了一个路由器循环接口Loopback0,IP地址为2.2.2.2。
### R3
这是BGP AS 65003的配置。这个路由器有两个邻居,一个是AS 65000的路由器,另一个是AS 65001的路由器。本地网络包括192.168.3.0/24和192.168.4.0/24。还配置了一个路由器循环接口Loopback0,IP地址为3.3.3.3。还配置了一个路由映射,用于将特定的前缀路由转发到特定的下一跳地址,并将本地优先级设置为150。
### R4
这是BGP AS 65002的配置。这个路由器有四个邻居,分别是AS 65000的路由器、AS 65001的路由器、AS 65003的路由器和本地路由器。本地网络包括192.168.5.0/24和192.168.6.0/24。还配置了一个路由器循环接口Loopback0,IP地址为4.4.4.4。还配置了一个路由映射,用于将特定的前缀路由转发到特定的下一跳地址,并将本地优先级设置为120。
### 其他配置
除了上述配置外,还有一些其他的配置:
- 配置了一个IP前缀列表PREFIX-TO-FILTER,用于过滤匹配特定前缀的路由。
- 配置了一个路由映射FILTER-PREFIX,用于过滤匹配特定前缀的路由。
- 配置了一个IP前缀列表PREFIX-TO-ADVERTISE,用于宣告特定前缀的路由。
- 配置了一个路由映射ADVERTISE-PREFIX,用于宣告特定前缀的路由。