Re: Routing Issue

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Hi

The web servers have 2 nics, one belonging to the 10 network, one for the
192 network.

There is a firewall on the network

[internet] -- [firewall] -- [lan clients 10.x.x.x]
|
- [load balancer] -- [web servers
192.x.x.x]


The routing table on the web server looks like


IPv4 Route Table
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x10004 ...00 0b db 94 02 fb ...... Broadcom NetXtreme Gigabit Ethernet #2
0x20003 ...00 0b db 94 02 fa ...... Broadcom NetXtreme Gigabit Ethernet
===========================================================================
===========================================================================
Active Routes:
Network Destination Netmask Gateway
Interface Metric
0.0.0.0 0.0.0.0 192.168.10.1
192.168.2.10 10
10.96.50.0 255.255.255.0 10.96.50.30
10.96.50.30 10
10.96.50.30 255.255.255.255 127.0.0.1 127.0.0.1
10
10.255.255.255 255.255.255.255 10.96.50.30 10.96.50.30
10
127.0.0.0 255.0.0.0 127.0.0.1
127.0.0.1 1
192.168.0.0 255.255.0.0 192.168.2.10
192.168.2.10 10
192.168.2.10 255.255.255.255 127.0.0.1 127.0.0.1
10
192.168.2.255 255.255.255.255 192.168.2.10 192.168.2.10
10
224.0.0.0 240.0.0.0 10.96.50.30
10.96.50.30 10
224.0.0.0 240.0.0.0 192.168.2.10
192.168.2.10 10
255.255.255.255 255.255.255.255 10.96.50.30 10.96.50.30
1
255.255.255.255 255.255.255.255 192.168.2.10 192.168.2.10 1
Default Gateway: 192.168.10.1
===========================================================================
Persistent Routes:
None


The load balancer has 2 interfaces on it, one on the 10 network and one on
the 192 network. The ip in the web server routing table 192.168.1.10 is the
ip of the load balancer.

Any ideas what could be going on? .. I"m not too familiar with routing and
stuff that's why i feel like i'm banging my head against a wall right now.
It definitely seems to be some sort of routing issue on the web server, as
when the 10 nic is turned on it doesn't work, but when the 10 nic is off, it
works fine.

Thanks

Richard



"Neteng" <neteng.ccie@xxxxxxxxx> wrote in message
news:etDg4a66FHA.3684@xxxxxxxxxxxxxxxxxxxxxxx
> Are the web servers and the clients using the same address space? Are
> there
> any firewalls in place or just the LB? What's the route table of the LB
> look
> like? Route table for the web servers? Do the web servers have dual NIC's
> or
> secondary addresses?
>
>
> "Richard" <rcowell%nospam%@xxxxxxxxxxxxxx> wrote in message
> news:ulTar656FHA.2384@xxxxxxxxxxxxxxxxxxxxxxx
>> Hi
>>
>> I've got a strange problem with some load balancing hardware that seems
>> to
>> be pointing to a routing issue on our web servers. I was wondering if
> anyone
>> had any ideas how to resolve the issue.
>>
>> The network is configured like this
>>
>> [lan clients 10.x.x.x] -- [load balancer] -- [web servers 192.x.x.x &
>> 10.x.x.x]
>>
>> The web servers need to be on the 10 network as well as the 192 network
>> because the data servers are on the 10 network which the clients update
>> regularly etc...
>>
>> The load balancer always successfully connects to the web server.
>>
>> BUT, the client on the 10 network only receives the webpage (test page
>> created on the local machine) when the 10 network is disabled on the web
>> server.
>>
>> Tech support for the load balancer have said this is a network routing
> issue
>> and not an issue with the load balancer itself.
>>
>> Anyone have any ideas what's going on with it?
>>
>> Richard
>>
>>
>
>


.

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