我有 Cisco RV042，問題是只能 ping 網關。這是我的設定：
LAN設定設備，
IP address : 172.31.13.254
Netmask : 255.255.255.248
雙WAN設定WAN 1靜態IP：
IP Address : 202.xx.xx.254
Netmask : 255.255.255.252
Def GW : 202.xx.xx.253
DNS Server 1 IP : 202.xx.xx.36
DNS Server 1 IP : 202.xx.xx.37
MTU : Auto
雙WAN設定WAN 2 DHCP IP：
Obtain an IP Automatically
Ping 閘道 202.xx.xx.253
Status: Test Succeeded
Packets: 4/4 transmitted, 4/4 received, 0% loss
Round Trip Time: Minimun = 1 ms
Maximun = 1 ms
Average = 1 ms
Ping DNS 1 和 2：202.xx.xx.36 和 37
Status: Test Failed
Packets: 4/4 transmitted, 0/4 received, 100% loss
Round Trip Time: Minimun = 2147483647 ms
Maximun = 0 ms
Average = 0 ms
Ping 外部 IP：8.8.8.8
Status: Test Failed
Packets: 4/4 transmitted, 0/4 received, 100% loss
Round Trip Time: Minimun = 2147483647 ms
Maximun = 0 ms
Average = 0 ms
我的 RV042 有什麼問題？我非常感激，能給我解釋一下嗎？謝謝
悲慘的