组网情况

现象描述
Switch_1上配置keepalive检测功能后,Switch_1上GRE隧道协议down,Switch_2上GRE隧道协议仍可以up。
原因分析
查看两端交换机的tunnel配置。
<Switch_1>display current-configuration interface Tunnel 1
#
interface Tunnel1
ip address 192.168.230.1 255.255.255.252
tunnel-protocol gre
keepalive
source 183.203.53.12
destination 183.203.48.197
#