routing変更

【変更前】

# LANG=C /sbin/route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
210.203.222.216 *               255.255.255.248 U     0      0        0 eth1
219.99.179.128  *               255.255.255.192 U     0      0        0 eth0
192.168.200.0   *               255.255.255.0   U     0      0        0 eth2
default         219.99.179.129  0.0.0.0         UG    0      0        0 eth0

# ip rule show
0:      from all lookup local
32765:  from 210.203.222.218 lookup BBIQ
32766:  from all lookup main
32767:  from all lookup default

# ip route show
210.203.222.216/29 dev eth1  proto kernel  scope link  src 210.203.222.218
219.99.179.128/26 dev eth0  proto kernel  scope link  src 219.99.179.188
192.168.200.0/24 dev eth2  proto kernel  scope link  src 192.168.200.188
default via 219.99.179.129 dev eth0

# ip route show table BBIQ
default via 210.203.222.217 dev eth1

# ip route show table main
210.203.222.216/29 dev eth1  proto kernel  scope link  src 210.203.222.218
219.99.179.128/26 dev eth0  proto kernel  scope link  src 219.99.179.188
192.168.200.0/24 dev eth2  proto kernel  scope link  src 192.168.200.188
default via 219.99.179.129 dev eth0

【変更作業】：念のため、シリアル経由で入って実施。

• /etc/iproute2/rt_tablesにQIDC追加
  
• /etc/network/interface修正：eth0のdefault gatewayをはずして、eth1側のdefault gatewayをBBIQ側に
  
• ip route del default via 210.203.222.217 dev eth1
  
• ip rule del from 210.203.222.218 lookup BBIQ
  
• ip route add default via 219.99.179.129 table QIDC
  
• ip route add 0/0 dev eth0 table QIDC
  
• ip rule add from 219.99.179.188 lookup QIDC
  
• ifdown eth0; ifdown eth1; ifup eth0; ifup eth1
  

【変更後】

# LANG=C /sbin/route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
210.203.222.216 0.0.0.0         255.255.255.248 U     0      0        0 eth1
219.99.179.128  0.0.0.0         255.255.255.192 U     0      0        0 eth0
192.168.200.0   0.0.0.0         255.255.255.0   U     0      0        0 eth2
0.0.0.0         210.203.222.217 0.0.0.0         UG    0      0        0 eth1

# ip rule show
0:      from all lookup local
32765:  from 219.99.179.188 lookup QIDC
32766:  from all lookup main
32767:  from all lookup default

# ip route show
210.203.222.216/29 dev eth1  proto kernel  scope link  src 210.203.222.218
219.99.179.128/26 dev eth0  proto kernel  scope link  src 219.99.179.188
192.168.200.0/24 dev eth2  proto kernel  scope link  src 192.168.200.188
default via 210.203.222.217 dev eth1

# ip route show table QIDC
default via 219.99.179.129 dev eth0

# ip route show table main
210.203.222.216/29 dev eth1  proto kernel  scope link  src 210.203.222.218
219.99.179.128/26 dev eth0  proto kernel  scope link  src 219.99.179.188
192.168.200.0/24 dev eth2  proto kernel  scope link  src 192.168.200.188
default via 210.203.222.217 dev eth1