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如图1所示#xff0c;需要在所有Switch间运行BGP协议#xff0c;SwitchA、SwitchB之间建立EBGP连接#xff0c;SwitchB、SwitchC和SwitchD之间建立IBGP全连接。
说明
请确保该场景下互联接口的STP处于未使能状态。因为在使能STP的环形网络中#xff0c;如果用交…组网需求
如图1所示需要在所有Switch间运行BGP协议SwitchA、SwitchB之间建立EBGP连接SwitchB、SwitchC和SwitchD之间建立IBGP全连接。
说明
请确保该场景下互联接口的STP处于未使能状态。因为在使能STP的环形网络中如果用交换机的VLANIF接口构建三层网络会导致某个端口被阻塞从而导致三层业务不能正常运行
配置BGP基本组网图 配置思路
采用如下的思路配置BGP的基本功能
在SwitchB、SwitchC和SwitchD间配置IBGP连接。在SwitchA和SwitchB之间配置EBGP连接 操作步骤
配置各接口所属的VLAN
# 配置SwitchA。SwitchB、SwitchC和SwitchD的配置与SwitchA类似
[zhongwanzhi]interface GigabitEthernet 0/0/1
[zhongwanzhi-GigabitEthernet0/0/1]port link-type trunk
[zhongwanzhi-GigabitEthernet0/0/1]port trunk allow-pass vlan 10
[zhongwanzhi-GigabitEthernet0/0/1]quit
配置各VLANIF接口的IP地址
# 配置SwitchA。SwitchB、SwitchC和SwitchD的配置与SwitchA类似
[zhongwanzhi]interface Vlanif 10
[zhongwanzhi-Vlanif10]ip add
[zhongwanzhi-Vlanif10]ip address 192.168.1.2 24
[zhongwanzhi-Vlanif10]quit
配置IBGP连接
# 配置SwitchB
[zhongwanzhib]bgp 65009
[zhongwanzhib-bgp]router-id 172.17.2.2
[zhongwanzhib-bgp]peer 172.16.1.2 as-number 65009
[zhongwanzhib-bgp]peer 172.16.3.1 as-number 65009
[zhongwanzhib-bgp]quit
[zhongwanzhib]
# 配置SwitchC
[zhongwanzhic]bgp 65009
[zhongwanzhic-bgp]router-id 172.17.3.3
[zhongwanzhic-bgp]peer 172.16.3.2 as-number 65009
[zhongwanzhic-bgp]peer 172.16.2.2 as-number 65009
[zhongwanzhic-bgp]
[zhongwanzhic-bgp]quit
[zhongwanzhic]
# 配置SwitchD。
[zhongwanzhid]bgp 65009
[zhongwanzhid-bgp]router-id 172.17.4.4
[zhongwanzhid-bgp]peer 172.16.1.1 as-number 65009
[zhongwanzhid-bgp]peer 172.16.2.1 as-number 65009
[zhongwanzhid-bgp]quit
[zhongwanzhid]
配置EBGP
# 配置SwitchA。
[zhongwanzhi]bgp 65008
[zhongwanzhi-bgp]router-id 172.17.1.1
[zhongwanzhi-bgp]peer 192.168.1.1 as-number 65009
[zhongwanzhi-bgp]quit
[zhongwanzhi]
# 配置SwitchB
[zhongwanzhib]bgp 65009
[zhongwanzhib-bgp]peer 192.168.1.2 as-number 65008
[zhongwanzhib-bgp]quit
[zhongwanzhib]
# 查看BGP对等体的连接状态
[zhongwanzhib]display bgp peerBGP local router ID : 172.17.2.2Local AS number : 65009Total number of peers : 3 Peers in established state : 2Peer V AS MsgRcvd MsgSent OutQ Up/Down State Pre
fRcv172.16.1.2 4 65009 19 21 0 00:17:39 Established 0172.16.3.1 4 65009 0 0 0 00:12:54 Established 0192.168.1.2 4 65008 18 16 0 00:14:59 Established 2
[zhongwanzhib]
可以看出SwitchB其它Switch的BGP连接均已建立
