問題描述：
當在PPPOE撥號接口和路由上配置從服務器得到網關時，路由條目裏的Priority 參數不生效，致使正常從***接口出去的默認路由成爲等價路由，使得互聯網業務時通時不通。
原因分析：
ADSL接口配置了’從服務器中重新得到網關,(set defaultgw enable)’時,接口重新獲得IP地址時, 接口新獲得的網關優於配置的通過動態網關的缺省網關(使用動態網關的靜態路由的priority不生效).在我們的網絡結構中,注意ADSL接口不配置’從服務器中重新得到網關’。
當配置了set defaultgw enable 後
get router info routing-table all的時候會看到
S* 0.0.0.0/0 [5/0] via 111.193.224.1, ppp1
C 172.19.20.1/26 is directly connected, V101
C 172.19.20.65/26 is directly connected, V102
C 172.19.20.129/26 is directly connected, V103
而我們配置的路由是：
show router static |
config router static |
edit 1 |
set device "wan1" |
set distance 5 |
set dynamic-gateway enable |
set priority 50 --- 這個不生效 |
next |
edit 2 |
set device "To-Fh" |
set distance 5 |
next |
edit 5 |
set device "wan1" |
set dst 220.178.222.222 255.255.255.255 |
set dynamic-gateway enable |
next |
edit 4 |
set device "To-Fh" |
set dst 10.255.55.1 255.255.255.255 |
next |
edit 6 |
set device "To-Fh" |
set dst 172.16.0.10 255.255.255.255 |
next |
--More-- end |
正常的路由表是: |
get router info routing-table all |
Codes: K - kernel, C - connected, S - static, R - RIP, B - BGP |
O - OSPF, IA - OSPF inter area |
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 |
E1 - OSPF external type 1, E2 - OSPF external type 2 |
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area |
* - candidate default |
| 正常的路由表： |
S* 0.0.0.0/0 [5/0] is directly connected, To-Fh |
[5/0] via 114.97.222.222, ppp1, [50/0] |
S 10.255.225.1/32 [10/0] is directly connected, To-Fh |
C 114.97.222.222/32 is directly connected, ppp1 |
C 114.97.222.222/32 is directly connected, ppp1 |
S 172.16.0.10/32 [10/0] is directly connected, To-Fh |
C 172.18.6.0/26 is directly connected, V300 |
C 172.19.24.0/26 is directly connected, V101 |
C 172.19.24.64/26 is directly connected, V102 |
C 172.19.24.128/26 is directly connected, V103 |
C 172.19.24.192/26 is directly connected, V104 |
C 192.168.1.0/24 is directly connected, internal |
S 220.178.222.222/32 [10/0] via 114.97.222.222, ppp1 |