Weird routing issue (updated)
Posted
by
smccloud
on Server Fault
See other posts from Server Fault
or by smccloud
Published on 2012-09-14T13:45:21Z
Indexed on
2012/09/16
3:40 UTC
Read the original article
Hit count: 397
I just updated the route tables due to a mistake on my part.
I am working on getting networking working correctly on a cluster of 14 virtual servers at a customer site. 11 of them work fine for routing and 3 don't work correctly for their administrative network (172.28.56.0). All are running Windows Web Server 2008R2.
Default gateway is set on the production network (172.28.58.0) and not on the administrative network (handled with persistent static routes).
On a working server, route print gives me the following (MACs redacted)
===========================================================================
Interface List
11...XX XX XX XX XX XX ......Intel(R) PRO/1000 MT Network Connection
13...XX XX XX XX XX XX00 0c 29 85 b2 98 ......Intel(R) PRO/1000 MT Network Connection #2
1...........................Software Loopback Interface 1
12...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter
14...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2
15...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface
===========================================================================
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 172.28.58.1 172.28.58.11 266
10.18.1.22 255.255.255.255 172.28.58.1 172.28.58.11 11
10.32.0.0 255.255.0.0 172.28.56.1 172.28.56.201 11
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
172.28.34.0 255.255.255.0 172.28.56.1 172.28.56.201 11
172.28.42.0 255.255.255.0 172.28.56.1 172.28.56.201 11
172.28.56.0 255.255.255.0 On-link 172.28.56.201 266
172.28.56.0 255.255.255.0 172.28.56.1 172.28.56.201 11
172.28.56.201 255.255.255.255 On-link 172.28.56.201 266
172.28.56.255 255.255.255.255 On-link 172.28.56.201 266
172.28.58.0 255.255.255.224 On-link 172.28.58.11 266
172.28.58.0 255.255.255.224 172.28.58.1 172.28.58.11 11
172.28.58.1 255.255.255.255 172.28.58.1 172.28.58.11 11
172.28.58.11 255.255.255.255 On-link 172.28.58.11 266
172.28.58.31 255.255.255.255 On-link 172.28.58.11 266
172.28.60.0 255.255.255.0 172.28.56.1 172.28.56.201 11
172.28.63.0 255.255.255.0 172.28.56.1 172.28.56.201 11
192.168.0.0 255.255.0.0 172.28.56.1 172.28.56.201 11
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 172.28.56.201 266
224.0.0.0 240.0.0.0 On-link 172.28.58.11 266
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 172.28.56.201 266
255.255.255.255 255.255.255.255 On-link 172.28.58.11 266
===========================================================================
Persistent Routes:
Network Address Netmask Gateway Address Metric
172.28.56.0 255.255.255.0 172.28.56.1 1
172.28.63.0 255.255.255.0 172.28.56.1 1
192.168.0.0 255.255.0.0 172.28.56.1 1
172.28.60.0 255.255.255.0 172.28.56.1 1
10.32.0.0 255.255.0.0 172.28.56.1 1
172.28.34.0 255.255.255.0 172.28.56.1 1
172.28.42.0 255.255.255.0 172.28.56.1 1
0.0.0.0 0.0.0.0 172.28.58.1 Default
===========================================================================
IPv6 Route Table
===========================================================================
Active Routes:
If Metric Network Destination Gateway
1 306 ::1/128 On-link
1 306 ff00::/8 On-link
===========================================================================
Persistent Routes:
None
On one of the non-working server, route print gives me the following (MACs redacted)
===========================================================================
Interface List
11...XX XX XX XX XX XX ......Intel(R) PRO/1000 MT Network Connection
13...XX XX XX XX XX XX ......Intel(R) PRO/1000 MT Network Connection #2
1...........................Software Loopback Interface 1
12...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter
14...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2
16...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface
===========================================================================
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 172.28.58.1 172.28.58.21 266
10.32.0.0 255.255.0.0 172.28.56.1 172.28.56.211 11
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
172.28.34.0 255.255.255.0 172.28.56.1 172.28.56.211 11
172.28.42.0 255.255.255.0 172.28.56.1 172.28.56.211 11
172.28.56.0 255.255.255.0 172.28.56.1 172.28.56.211 11
172.28.56.211 255.255.255.255 On-link 172.28.56.211 266
172.28.58.0 255.255.255.0 172.28.58.1 172.28.58.21 11
172.28.58.0 255.255.255.224 On-link 172.28.58.21 266
172.28.58.21 255.255.255.255 On-link 172.28.58.21 266
172.28.58.31 255.255.255.255 On-link 172.28.58.21 266
172.28.60.0 255.255.255.0 172.28.56.1 172.28.56.211 11
172.28.63.0 255.255.255.0 172.28.56.1 172.28.56.211 11
192.168.0.0 255.255.0.0 172.28.56.1 172.28.56.211 11
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 172.28.56.211 266
224.0.0.0 240.0.0.0 On-link 172.28.58.21 266
255.255.255.255 255.255.255.255 On-link 127.0.0.1 06
255.255.255.255 255.255.255.255 On-link 172.28.56.211 266
255.255.255.255 255.255.255.255 On-link 172.28.58.21 266
===========================================================================
Persistent Routes:
Network Address Netmask Gateway Address Metric
172.28.56.0 255.255.255.0 172.28.56.1 1
172.28.60.0 255.255.255.0 172.28.56.1 1
172.28.63.0 255.255.255.0 172.28.56.1 1
172.28.34.0 255.255.255.0 172.28.56.1 1
172.28.42.0 255.255.255.0 172.28.56.1 1
192.168.0.0 255.255.0.0 172.28.56.1 1
10.32.0.0 255.255.0.0 172.28.56.1 1
0.0.0.0 0.0.0.0 172.28.58.1 Default
172.28.58.0 255.255.255.0 172.28.58.1 1
===========================================================================
IPv6 Route Table
===========================================================================
Active Routes:
If Metric Network Destination Gateway
1 306 ::1/128 On-link
1 306 ff00::/8 On-link
===========================================================================
Persistent Routes:
None
I am at a complete loss why the non-working servers have no On-link route for 172.28.56.0. Does anyone have any suggestions on what I should be looking at to figure this out? Also, I do have "physical" access to the console if needed through vSphere Client.
© Server Fault or respective owner
