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Solaris 10 routing table issues

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# 1  
Old 02-16-2011
Network Solaris 10 routing table issues
Hello

Hope someone can help with this problem. We are running Solaris 10 with a current kernel patch of 142900-09.

We appear to be getting a serious issue with the routing table as shown below:

Output from netstat -rnv
Code:
Destination ....Mask ............Gateway ........Device
--------------- ---------------- --------------- -------
default ....... 0.0.0.0 ........ ???.???.133.254
???.???.128.151 255.255.255.255 .???.???.136.254
???.???.132.0 . 255.255.255.0 .. ???.???.132.13 .vnet0:1
???.???.132.0 . 255.255.255.0 .. ???.???.132.13 .vnet0
???.???.132.0 . 255.255.255.0 .. ???.???.132.13 .vnet1
???.???.136.0 . 255.255.255.0 .. ???.???.136.13 .vnet4:1
???.???.136.0 . 255.255.255.0 .. ???.???.136.13 .vnet4
???.???.136.0 . 255.255.255.0 .. ???.???.136.13 .vnet5
???.???.136.0 . 255.255.255.0 .. ???.???.136.254

At random intervals access to the 136 subnet fails. when examined the output of netstat -rnv has changed as follows:
Code:
Destination ... Mask ........... Gateway ....... Device
--------------- ---------------- --------------- -------
default ....... 0.0.0.0 ........ ???.???.133.254
???.???.128.151 255.255.255.255 .???.???.136.254
???.???.132.0 . 255.255.255.0 .. ???.???.132.13 .vnet0:1
???.???.132.0 . 255.255.255.0 .. ???.???.132.13 .vnet0
???.???.132.0 . 255.255.255.0 .. ???.???.132.13 .vnet1
???.???.136.0 . 255.255.255.0 .. ???.???.136.254
???.???.136.0 . 255.255.255.0 .. ???.???.136.13 .vnet4:1
???.???.136.0 . 255.255.255.0 .. ???.???.136.13 .vnet4
???.???.136.0 . 255.255.255.0 .. ???.???.136.13 .vnet5

The 136.254 route appears to have 'moved' up the table and is now the 'default' route for all 136 subnet traffic.

Removing and re-adding this route restores the order of the routing table as shown in the first example.

Has anyone else encountered a similar problem and if so how was it fixed or is it still an issue.

Currently we intend to write a checking script to log the details (output of netstat -rnv, ifconfig -a and route get) and then fix the issue.

We have checked the messages file for hardware failures and found nothing.

Please let me know if further information would help. (sorry about the extra .'s in the table).
Last edited by fpmurphy; 02-18-2011 at 01:09 AM.. Reason: code tags please!
# 2  
Old 02-16-2011
Instead of inserting ...'s in the table you can just put the whole thing in [ code ] code tags [ /code ] which will preserve spacing properly.
# 3  
Old 02-17-2011
Thanks for the information. I will remember for next time.
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