[c-nsp] CSCsj19555 (vpdn vaccess leak in 12.2SR) anybody hit this?

[David Freedman]

Thanks to all those who replied off-list, seems the master bug is
CSCsj19555 which is on target for fix SRC5 or SRD3.

David.

David Freedman wrote:
> Think I am,
> 
> doing vpdn/l2tp on SRC1/2/3/4 and SRD1/2, vaccess not being freed up,
> debug sss says:
> 
> Jul 20 11:28:11 BST: SSS LTERM [uid:589]: Vi2.4877 is still in use by
> LTERM data-plane
> 
> 
> and interface conceeds:
> 
> 
> #sh int virtual-access 2.4877 | in status
>   Vaccess status 0x200, free pending L2X switching completion
> 
> 
> This is a problem as you can see:
> 
> #sh vpdn sess | in essions
> L2TP Session Information Total tunnels 2 sessions 1369
> 
> #sh vtempla | in pend
> Current free pending: 8100 (and counting)
> 
> #sh idb | in Max
> Maximum number of Software IDBs 32000.  In use 9487.
> 
> 
> Contextual SSS dump:
> 
> #sh log | in uid:589
> Jul 20 11:28:11 BST: SSS MGR [uid:589]: Sending a Unset the session
> key(s) ID Mgr request
> Jul 20 11:28:11 BST: SSS MGR [uid:589]: Removing the following data from
> ID Mgr:
> Jul 20 11:28:11 BST: SSS MGR [uid:589]: ID Mgr returned status:
> 'updated' for Unset the session key(s)
> Jul 20 11:28:11 BST: SSS LTERM [uid:589]: Vi2.4877 is still in use by
> LTERM data-plane
> Jul 20 11:28:11 BST: SSS MGR [uid:589]: No child sessions attached
> Jul 20 11:28:11 BST: SSS MGR [uid:589]: Processing a client disconnect
> Jul 20 11:28:11 BST: SSS MGR [uid:589]: Handling Send Service Disconnect
> action
> Jul 20 11:28:11 BST: SSS MGR [uid:589]: Failed to send aaa event
> Jul 20 11:28:11 BST: SSS LTERM [uid:589]: Switching session unprovisioned
> Jul 20 11:28:11 BST: SSS LTERM [uid:589]: Uninstalled Vi2 process path
> switching vector
> Jul 20 11:28:11 BST: SSS LTERM [uid:589]: Uninstalled Vi2 fastsend path
> switching vector
> Jul 20 11:28:11 BST: SSS MGR [uid:589]: Handling Disconnecting, Network
> Service Feature Clean action
> Jul 20 11:28:11 BST: SSS MGR [uid:589]: Sending a Session End ID Mgr request
> Jul 20 11:28:11 BST: SSS MGR [uid:589]: ID Mgr returned status:
> 'deleted' for Session End
> Jul 20 11:28:11 BST: SSS MGR [uid:589]: Freeing vaccess interface
> Vi2.4877, 69EAA23C
> 
> 
> claims to be fixed if I downgrade to SRC, don't quite believe this,
> nothing new appear to be fixed in , which is annoying (SRC itself too
> buggy to use here)
> 
> have noticed that the leak slows down when enabling "vpdn multihop"
> (even though not used anywhere in any radius attributes)
> 
> just going through all the SSS features it claims are disabled and
> enabling them in order to slow the leak down (next on my list is SGBP)
> 
> Would appreciate anybody who has experienced this coming forward, I have
> a TAC case open in which I've mentioned I believe it is this bug but
> case is running at a snail's pace :(
> 
> 
> Dave.
> 
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