Routing duplication Problems

[Christina 80]

Hi all,

I am working in a office. I setup a two routers in my office that handle 30 computers, but it today it give a Routing duplication error. First i restored until the switch back, can not wait to switch configured data, the client opens a Web page testing a moment, everything normal, kinda fast speed. but not normal, and oagain it will give a error. Please suggest. Thanks in advance.

[Milton.J]

First, look at the switch and check. If you found no problem, the data configured correctly. Also looked at the export NAT server, suddenly thought of the inspection route is definitely the question of overlapping routes. Check that a NAT service to do the export server, a division of the center of VLAN switches, central switches directly connected to external networks, the switch connected between the external network interface and NAT server's external network card within a VLAN. Check and reply.

[Snake08]

You need to check the cross-machine configuration is as follows:

vlan 10 name link INTERNET by port
# # On the Internet VLAN 
untagged ethe 8 / 1 to 8 / 2
router-interface ve 10
!
vlan 20 name neiwang by port
# # NAT devices within the VLAN network connection
untagged ethe 6 / 1 to 6 / 2
router-interface ve 20
!
vlan 30 name user1 by port # # user-VLAN
untagged ethe 6 / 3 to 6 / 24
router-interface ve 30
!
system-max vlan 4099
system-max virtual-interface 4095
!
enable telnet password
enable super-user-password .....
ip route 0.0.0.0 0.0.0.0 192. 168.0.254
# # Point to the default static route NAT device
!
no web-management
!
interface ve 10
ip address 218.200.200.193 255.255.255.224
# # Public network IP segment (with the NAT server, the static route duplication)
!
interface ve 20
ip address 192.168.0.253 255.255.255.252
# # NAT devices within the network and Internet IP
!

[Zachary]

You need to also NAT server set up a static route that is as follows:
Connection within the network card set: ip route 192.168.0.0 255.255.254.0 192.168.0.253.
The connection outside the network card set: ip route 0.0.0.0 0.0.0.0 218.200.200.193 (with the switch interface ve 10 Routing repeat)
Determine the routing to repeat after giving ve 10 removed and everything is normal. Check and reply.

[Steve123]

As the route duplication, when a client requests a packet of external return, in addition to the normal request for the client outside the arrival interface ve 10 years will also keep a packet of "copy." This "copy" of the destination address is the interface ve 10 years of the IP segment, so the switch will no longer be forwarded. Over time the accumulation of the switch can not forward packets within a more and more, eventually leading to the switch memory, all the occupied to stop forwarding all data packets, when the data packet after a survival time, then automatically discarded, switches, memory release, switches, once again began to forward data packets, and so the cycle of repetition, there emerged the phenomenon of intermittent users online. Check and reply.