Routing issues
We have several Point to Point T1 circuits that connect to remote sites as well as 2 bonded T1 circuits for Internet/Phone connectivity. On one of our workstations we need to access data on one of the remote networks 10.10.62.x while maintaining connectivity to the Internet... That workstation has two NIC's the 1st is connected to the WAN the 2nd is connected to the Private Line Attached is the IPconfig and routing table: Windows 2000 IP Configuration Host Name . . . . . . . . . . . . : VCS01Primary DNS Suffix . . . . . . . : DIGATRON.localNode Type . . . . . . . . . . . . : Broadcast IP Routing Enabled. . . . . . . . : Yes WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : DIGATRON.local Ethernet adapter DHA: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Realtek RTL8139(A) PCI Fast Ethernet AdapterPhysical Address. . . . . . . . . : 00-14-D1-3C-3C-83 DHCP Enabled. . . . . . . . . . . : No IP Address. . . . . . . . . . . . : 10.10.60.2 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 10.10.60.1 DNS Servers . . . . . . . . . . . : Ethernet adapter DIGANET: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Intel(R) PRO/100 VE Network ConnectionPhysical Address. . . . . . . . . : 00-13-20-6C-69-3E DHCP Enabled. . . . . . . . . . . : No IP Address. . . . . . . . . . . . : 63.254.241.116 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 63.254.241.113 DNS Servers . . . . . . . . . . . : 209.253.113.10 209.253.113.18 ===========================================================================Interface List0x1 ........................... MS TCP Loopback interface 0x5000003 ...00 14 d1 3c 3c 83 ...... NDIS 5.0 driver 0x5000004 ...00 13 20 6c 69 3e ...... Intel(R) PRO/100 VE Network Connection===========================================================================Active Routes:Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 10.10.60.1 10.10.60.2 1 0.0.0.0 0.0.0.0 63.254.241.113 63.254.241.116 1 10.10.60.0 255.255.255.0 10.10.60.2 10.10.60.2 1 10.10.60.2 255.255.255.255 127.0.0.1 127.0.0.1 1 10.255.255.255 255.255.255.255 10.10.60.2 10.10.60.2 1 63.254.241.0 255.255.255.0 63.254.241.116 63.254.241.116 1 63.254.241.116 255.255.255.255 127.0.0.1 127.0.0.1 1 63.255.255.255 255.255.255.255 63.254.241.116 63.254.241.116 1 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1 224.0.0.0 224.0.0.0 10.10.60.2 10.10.60.2 1 224.0.0.0 224.0.0.0 63.254.241.116 63.254.241.116 1 255.255.255.255 255.255.255.255 10.10.60.2 10.10.60.2 1Default Gateway: 10.10.60.1===========================================================================Persistent Routes: None The private line uses 2 CSU/DSU with routing nearside LAN 10.10.60.1 gw 10.10.60.1 mask 255.255.255.0 WAN 10.10.61.1 gw 10.10.61.2 mask 255.255.255.0 farside LAN 10.10.62.1 gw 10.10.62.1 mask 255.255.255.0 WAN 10.10.61.2 gw 10.10.61.1 mask 255.255.255.0 So end all result is to route traffic from 10.10.60.2 to 10.10.62.x over the 10.x interface while routing internet traffic across the other interface. Currently I have to disable one of the interfaces in order to access data on a desired network and then disable the enable dinterface and enable the diabled interface to switch.... Please help
May 27th, 2008 10:35pm

If you have both NICs active, you cannot have a default gateway set on each NIC. You can only have one default gateway per machine. I would clear the default gateway address from the Realtek (10.10.60.2) NIC, leaving thegateway set on the Intel NIC. To get traffic for 10.addresses to use the Realtek NIC, add a static route to direct this traffic to the correct interface. From a command prompt, type the following route add -p 10.0.0.0 mask 255.0.0.0 10.10.60.1 if 10.10.60.2 This will adda route to the routing table to redirect 10. traffic to the 10.10.60.1 gateway via the 10.10.60.2 interface (as the default route used to do).
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May 28th, 2008 2:02pm

Ok I actually have 4 remote netwroks I need to connect to: 10.10.32.xgw 10.10.30.1 10.10.42.x gw 10.10.40.1 10.10.52.x gw 10.10.50.1 10.10.62.x gw 10.10.60.1 So for these networks would I need to add routes for each host destination...i.e. 10.10.62.6 & 10.10.62.7? or can I simply add a route for each of the 4 networks? If so what would be the syntax of that route? Thank you very much!
May 28th, 2008 8:31pm

No,a subnet route covers all of the hosts in that subnet. Similarly a route with an eight-bit subnet mask such as 10.0.0.0/8 (ie 10.0.0.0mask 255.0.0.0) covers every address beginning with 10. Have you tried just using the route I gave you?You cannot specify a gateway like 10.10.30.1 on your workstation. The gateway must be "reachable" (ie in the same IP subnet as the sending machine). All traffic going to a 10. address must go through 10.10.60.2
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May 29th, 2008 4:41am

Thatbasic route works for an XP workstation that I haave but when I try to use it on a Win2k workstation I recieve an error stating the interface index is wrong... I appreciate the help thus far though.... Ok here's the situation..I have 4 Point to Point Circuit connecting to Remote Sites...And I'm about to add 2 more next week Each circuit has a T1 CSU/DSU at either end...Each CSU/DSU uses it peer as its routing gateway... One remote site lies on the 10.10.62.x subnet and I connect from the 10.10.60.x subnet with a 3 gateways 10.10.60.1, 10.10.61.1 and 10.10.62.1 on the peering CSU/DSU's The other sites all follow the same Routing scheme 10.10.30.x 10.10.40.x 10.10.50.x What would have worked much better would have been a scheme such as: 10.10.30.x to 10.10.31.1 to 10.10.32.1 10.11.30.x to 10.11.31.1 to 10.11.32.1 10.12.30.x to 10.12.31.1 to 10.12.32.1 10.13.30.x to 10.13.31.1 to 10.13.32.1 10.14.30.x to 10.14.31.1 to 10.14.32.1 10.15.30.x to 10.15.31.1 to 10.15.32.1 Any ideas besides reconfiguring all the CSU/DSU routers witrh new subnets?
May 29th, 2008 3:34pm

This isn't the sort of thing you should be trying to do at workstation level. There should only be one gateway to the 10. networks from a workstation. Apart from being messy, it just isn't possible to do what you propose without having a separate NIC in the workstation for each subnet. How do the remote sites communicate with the central site and with each other? Surely there is a router somewhere handling this? What subnet is in use at the central site?This looks like a network design problem rather than a routing problem. There isn't really enough info here to advise you on that, andit isn't really something that can be sorted out in a forum or newsgroup.If you want to take it offline, you can send me a bit more info about your network {grantaw (at) aliencamel (dot) com}and what you want it to do and I will have a look at it.Bill
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May 30th, 2008 4:53am

Yes there are 4 CSU/DSU which are routers
May 30th, 2008 10:21pm

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