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02.22.2008 at 10:34AM PST, ID: 23185372

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4.2

windows 2003 cluster - unable to ping servers - vlan

Zones: Network Operations, Exchange Email Server, Windows 64-bit

I am trying to setup Exhange 2k7 running CCR - I have 4 servers for exchange:
I have 4 servers that I will (meaning they don't have exchange on them now) install the following roles:
1 Hub transport (HT)
1 Client access server (CAS)
2 Mailbox servers clustered

All servers are dell poweredge 2950's with Intel Pro/1000 (driver version 9.12.13.0) PT Dual Port cards + onboard broadcaom BCM5708C

On each server I am teaming the intel nics using adaptive load balencing
All the servers are on the same vlan
All servers are on SP2 with the latest patches + .net framerwork as of 2/22/2008
All servers are connected to a cisco switch
Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500-IPBASEK9-M), Version 12.2(31)SGA, RELEASE SOFTWARE (fc3)
I have several Vlans and have no problem traversing them.

I have hard set the ports to 1000 full duplex -

Here is the problem: From my desktop (vlan X) I cannot ping the clustered mailbox servers (vlan Y) by name or IP - I do an NSLOOKUP and the name resloves and the IP resolves. I can ping the other two servers (ht&cas) and RDP into them. Once I am on either ht or cas I can then RDP into either mailbox server.
I have tried 'unteaming" the nics - doesn't make a difference.

I can also ping the server IP addresses from the switch that my desktop is connected to.

I don't have a firewall on the two clustered backend servers.

Let me know what other information you need.

Thanks.

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Question Stats

Zone: Networking

Question Asked By: CLER

Solution Provided By: CLER

Participating Experts: 1

Solution Grade: A

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02.22.2008 at 10:48AM PST, ID: 20960159

bhnmi:

Make sure the gateway addresses on the 2 servers in question are correctly set. Sounds like they are not. If you can ping them from the same subnet but not another it means that they are not routing correctly.

02.22.2008 at 11:01AM PST, ID: 20960267

CLER:

The gateway is set the same on all 4 servers. I just double checked. When I go to close the tcp/ip properties I do get a message:

"Warming - Multiple default gateways are intended to provide redudancy to a single network (such as an an intranet or the internet). They will not function properly when the gateways are on two seperate, disjoint networks (such as one on your intranet and one on the internet). Do you want to save this configuration?"

I assume that has to do with the nics being teamed or the fact that they are clustered. I am leaning toward the nics being teamed because I get the same error on the ht and cas server as well as the mailbox clustered server.

ipconfig from ht server:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : TEAM : Team #0
Physical Address. . . . . . . . . : 00-15-17-61-8D-95
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 10.199.128.160
Subnet Mask . . . . . . . . . . . : 255.255.255.128
Default Gateway . . . . . . . . . : 10.199.128.129
DNS Servers . . . . . . . . . . . : 172.16.0.110

from 1 mailbox server:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : TEAM : Team #0
Physical Address. . . . . . . . . : 00-15-17-62-B6-1D
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 10.199.128.155
Subnet Mask . . . . . . . . . . . : 255.255.255.128
IP Address. . . . . . . . . . . . : 10.199.128.179
Subnet Mask . . . . . . . . . . . : 255.255.255.128
Default Gateway . . . . . . . . . : 10.199.128.129
DNS Servers . . . . . . . . . . . : 172.16.0.110
172.16.0.36

02.22.2008 at 11:05AM PST, ID: 20960302

bhnmi:

Can you ping past the gateway from the troubled machine?

02.22.2008 at 11:05AM PST, ID: 20960305

bhnmi:

can you ping the interface of a different vlan?

02.22.2008 at 11:11AM PST, ID: 20960368

CLER:

bhnmi -

from the troubled machine I can ping yahoo, my DC (on a different vlan) but not my workstation (different vlan than my dc). I can also ping from my DC to the troubled machine.

from the ht (good machine) I can ping my workstation, dc, anything.

02.22.2008 at 11:15AM PST, ID: 20960406

bhnmi:

from the switches IOS can you ping the trouble machine and your workstation?

02.22.2008 at 11:17AM PST, ID: 20960419

bhnmi:

Also, make sure there is not an incorrect static route on the trouble machine for the workstations subnet.

02.22.2008 at 11:25AM PST, ID: 20960504

CLER:

yes I can ping both my ws and troubled machine from my switches

when i do a route print from the troubled machine I don't get any persistant routes, if that is what you were looking for.

troubled machine's routing table

IPv4 Route Table
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x2 ...00 1d 09 2f 36 92 ...... Broadcom BCM5708C NetXtreme II GigE (NDIS VBD Client)
0x50004 ...00 15 17 62 b6 1d ...... Intel(R) Advanced Network Services Virtual Adapter
===========================================================================
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 10.199.128.129 10.199.128.179 10
10.0.0.0 255.0.0.0 10.10.10.10 10.10.10.10 10
10.10.10.10 255.255.255.255 127.0.0.1 127.0.0.1 10
10.199.128.128 255.255.255.128 10.199.128.179 10.199.128.179 10
10.199.128.155 255.255.255.255 127.0.0.1 127.0.0.1 10
10.199.128.179 255.255.255.255 127.0.0.1 127.0.0.1 10
10.255.255.255 255.255.255.255 10.10.10.10 10.10.10.10 10
10.255.255.255 255.255.255.255 10.199.128.179 10.199.128.179 10
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
224.0.0.0 240.0.0.0 10.10.10.10 10.10.10.10 10
224.0.0.0 240.0.0.0 10.199.128.179 10.199.128.179 10
255.255.255.255 255.255.255.255 10.10.10.10 10.10.10.10 1
255.255.255.255 255.255.255.255 10.199.128.179 10.199.128.179 1
Default Gateway: 10.199.128.129
===========================================================================
Persistent Routes:
None

HT routing table

IPv4 Route Table
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x2 ...00 1e c9 2d 81 77 ...... Broadcom BCM5708C NetXtreme II GigE (NDIS VBD Client)
0x3 ...00 1e c9 2d 81 79 ...... Broadcom BCM5708C NetXtreme II GigE (NDIS VBD Client) #2
0x10005 ...00 15 17 61 8d 95 ...... TEAM : Team #0
===========================================================================
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 10.199.128.129 10.199.128.160 10
10.199.128.128 255.255.255.128 10.199.128.160 10.199.128.160 10
10.199.128.160 255.255.255.255 127.0.0.1 127.0.0.1 10
10.255.255.255 255.255.255.255 10.199.128.160 10.199.128.160 10
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
224.0.0.0 240.0.0.0 10.199.128.160 10.199.128.160 10
255.255.255.255 255.255.255.255 10.199.128.160 2 1
255.255.255.255 255.255.255.255 10.199.128.160 3 1
255.255.255.255 255.255.255.255 10.199.128.160 10.199.128.160 1
Default Gateway: 10.199.128.129
===========================================================================
Persistent Routes:
None

02.22.2008 at 11:28AM PST, ID: 20960525

CLER:

my ip is 10.199.133.157
255.255.255.0
gw: 10.199.133.1

02.22.2008 at 11:32AM PST, ID: 20960561

bhnmi:

Try settings a static route for the workstation vlan.

02.22.2008 at 11:44AM PST, ID: 20960709

CLER:

here is the command I typed in:
route add 10.199.133.0 mask 255.255.255.0 10.199.133.1

shouldn't I see something in the persistant routes?

IPv4 Route Table
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x2 ...00 1d 09 2f 36 92 ...... Broadcom BCM5708C NetXtreme II GigE (NDIS VBD Client)
0x50004 ...00 15 17 62 b6 1d ...... Intel(R) Advanced Network Services Virtual Adapter
===========================================================================
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 10.199.128.129 10.199.128.179 10
10.0.0.0 255.0.0.0 10.10.10.10 10.10.10.10 10
10.10.10.10 255.255.255.255 127.0.0.1 127.0.0.1 10
10.199.128.128 255.255.255.128 10.199.128.179 10.199.128.179 10
10.199.128.155 255.255.255.255 127.0.0.1 127.0.0.1 10
10.199.128.179 255.255.255.255 127.0.0.1 127.0.0.1 10
10.199.133.0 255.255.255.0 10.199.133.1 10.10.10.10 1
10.255.255.255 255.255.255.255 10.10.10.10 10.10.10.10 10
10.255.255.255 255.255.255.255 10.199.128.179 10.199.128.179 10
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
224.0.0.0 240.0.0.0 10.10.10.10 10.10.10.10 10
224.0.0.0 240.0.0.0 10.199.128.179 10.199.128.179 10
255.255.255.255 255.255.255.255 10.10.10.10 10.10.10.10 1
255.255.255.255 255.255.255.255 10.199.128.179 10.199.128.179 1
Default Gateway: 10.199.128.129
===========================================================================
Persistent Routes:
None

02.22.2008 at 11:47AM PST, ID: 20960729

bhnmi:

No its shows up in active routes.

10.199.133.0 255.255.255.0 10.199.133.1 10.10.10.10 1

Need to set the gateway to the vlan interface IP of the vlan the server is on.

02.22.2008 at 11:51AM PST, ID: 20960765

CLER:

sorry - it has been a long week - my brain is mush...

Can you explain your sentance "Need to set the gateway to the vlan interface IP of the vlan the server is on."?

Why is it that the other two servers aren't having this problem?

02.22.2008 at 12:05PM PST, ID: 20960907

bhnmi:

We are just testing at this point. For some reason the server is not routing to the workstation subnet.

So we need a route like this.

10.199.133.0 255.255.255.0 10.199.128.129 10.10.10.10 1

Just to ma