ScanIPrelocate/failover后其他网段无法ping通

集群单节点在重启或者手动srvctl relocate scan_listener后，集群所在网段ping IP,VIP，SCAN IP正常，其他网段ping SCAN IP 不通。原因是路由的ARP表没有随之而跟新SCAN IP。需要手动更新。 /sbin/arping -U -c 3 -I public NIC for vip vip ip address my o

集群单节点在重启或者手动srvctl relocate scan_listener后，集群所在网段ping IP,VIP，SCAN IP正常，其他网段ping SCAN IP 不通。原因是路由的ARP表没有随之而跟新SCAN IP。需要手动更新。

 /sbin/arping -U -c 3 -I <public NIC for vip> <vip ip address> 

my oracle support说明如下：

Bug 13440962 Different subnet failed to connect to vip after restart vip

This note gives a brief overview of bug 13440962.
The content was last updated on: 01-FEB-2012
Click here for details of each of the sections below.

Affects:

Product (Component)	Oracle Server (PCW)
Range of versions believed to be affected	Versions >= 11.2.0.3 but BELOW 12.1
Versions confirmed as being affected	11.2.0.3
Platforms affected	Generic (all / most platforms affected)

It is believed to be a regression in default behaviour thus:

Regression introduced in 11.2.0.3

Fixed:

This issue is fixed in

12.1 (Future Release)

Symptoms:	Related To:
(None Specified)	Cluster Ready Services / Parallel Server Management

Description

This is a regression fix for problem introduced by patch 11069846. 
The change in this patch (patch 13440962) fixes a problem with 4 extra 
bytes in the G【本文来自鸿网互联 (http://www.68idc.cn)】ARP message and removes an extra unicast GARP packet to 
the router.
 
Rediscovery Notes:
 After upgrading to 11.2.0.3, after vip failover, the ip address is 
 not pingable from a different subnet on Linux. 
 (This problem is seen only on Linux)
 
Workaround
 After vip failover, run command 
   /sbin/arping -U -c 3 -I <public NIC for vip> <vip ip address> 
 to update the ARP table of router. 

Please note: The above is a summary description only. Actual symptoms can vary. Matching to any symptoms here does not confirm that you are encountering this problem. For questions about this bug please consult Oracle Support.