AIX删除多余的默认网关

AIX删除多余的默认网关

系统环境：

操作系统：AIX 5.3.8

Oracle: Oracle 10gR2

案例分析：

在AIX系统上有多个默认网关，在安装RAC时，导致网络环境检测错误，无法安装RAC.

通过smit和route delete删除，系统在重启后又回到原来的状态！

解决方案：

1、查看当前默认网关

[root@aix230:/]#netstat -nr

Routing tablesDestination        Gateway           Flags   Refs     Use  If   Exp  GroupsRoute tree for Protocol Family 2 (Internet):default            192.168.8.1       UG        0         0 en0      -      -   default            10.10.10.1            UG        0         0 en1      -      - default            10.10.10.1          UG        0         0 en1      -      - 10.10.10.0         10.10.10.230      UHSb      0         0 en1      -      -   =>10.10.10/24        10.10.10.230      U         0         1 en1      -      -   10.10.10.230       127.0.0.1         UGHS      0         1 lo0      -      -   10.10.10.255       10.10.10.230      UHSb      0         4 en1      -      -   127/8              127.0.0.1         U        13       247 lo0      -      -   192.168.8.0        192.168.8.230     UHSb      0         0 en0      -      -   =>192.168.8/24       192.168.8.230     U         4        42 en0      -      -   192.168.8.230      127.0.0.1         UGHS      0         1 lo0      -      -   192.168.8.255      192.168.8.230     UHSb      0         4 en0      -      -   Route tree for Protocol Family 24 (Internet v6):::1                ::1               UH        0         0 lo0      -      -

2、查看ODM信息

[root@aix230:/]#lsattr -El inet0

authm 65536 Authentication Methods True

bootup_option no Use BSD-style Network Configuration True

gateway Gateway True

hostname aix230 Host Name True

rout6 IPv6 Route True

route net,-hopcount,0,,0,192.168.8.1 Route True

route net,-hopcount,0,,0,10.10.10.1 Route True

route net,-hopcount,2,,0,10.10.10.1 Route True

[root@aix230:/]#odmget -q "name=inet0" CuAt

CuAt:        name = "inet0"        attribute = "hostname"        value = "aix230"        type = "R"        generic = "DU"        rep = "s"        nls_index = 24CuAt:        name = "inet0"        attribute = "route"        value = "net,-hopcount,0,,0,10.10.10.1"        type = "R"        generic = "DU"        rep = "s"        nls_index = 0CuAt:        name = "inet0"        attribute = "route"        value = "net,-hopcount,0,,0,192.168.8.1"        type = "R"        generic = "DU"        rep = "s"        nls_index = 0CuAt:        name = "inet0"        attribute = "route"        value = "net,-hopcount,2,,0,10.10.10.1"        type = "R"        generic = "DU"        rep = "s"        nls_index = 0

3、逐条删除没用的默认路由

[root@aix230:/]#chdev -l inet0 -a delroute="net,-hopcount,2,,0,10.10.10.1"

inet0 changed

4.确认生效

[root@aix230:/]#odmget -q "name=inet0" CuAt

CuAt:        name = "inet0"        attribute = "hostname"        value = "aix230"        type = "R"        generic = "DU"        rep = "s"        nls_index = 24CuAt:        name = "inet0"        attribute = "route"        value = "net,-hopcount,0,,0,192.168.8.1"        type = "R"        generic = "DU"        rep = "s"        nls_index = 0

[root@aix230:/]#netstat -nr

Routing tablesDestination        Gateway           Flags   Refs     Use  If   Exp  GroupsRoute tree for Protocol Family 2 (Internet):default            192.168.8.1       UG        0         0 en0      -      -   10.10.10.0         10.10.10.230      UHSb      0         0 en1      -      -   =>10.10.10/24        10.10.10.230      U         0         1 en1      -      -   10.10.10.230       127.0.0.1         UGHS      0         1 lo0      -      -   10.10.10.255       10.10.10.230      UHSb      0         4 en1      -      -   127/8              127.0.0.1         U        13       247 lo0      -      -   192.168.8.0        192.168.8.230     UHSb      0         0 en0      -      -   =>192.168.8/24       192.168.8.230     U         4        42 en0      -      -   192.168.8.230      127.0.0.1         UGHS      0         1 lo0      -      -   192.168.8.255      192.168.8.230     UHSb      0         4 en0      -      -   Route tree for Protocol Family 24 (Internet v6):::1                ::1               UH        0         0 lo0      -      -

@系统在重启后，不再出现多个default gw的现象，至此，问题得到解决！