Hi Rob,
I found this on the knowledgebase (always a good starting point :) )
Title:

I/G/C/B-Series with Failing Ports and "timeout draining packets" Error Messages

Article ID:

13852

________________________________
Products
I-Series, firmware 6.42.02.0006 through 6.42.08.0007
G-Series, firmware 6.42.02.0006 through 6.42.08.0007
C5-Series, firmware 6.42.02.0006 through 6.42.08.0007
C3-Series, firmware 6.42.02.0006 through 6.42.08.0007
B5-Series, firmware 6.42.02.0006 through 6.42.08.0007
B3-Series, firmware 6.42.02.0006 through 6.42.08.0007

Symptoms
One or more "timeout draining packets" errors seen in the current.log 
(5487<https://cp-enterasys.kb.net/articleRedirect.aspx?aid=5487|>); for example:
<160>Apr 5 17:31:42 0.0.0.0-8 SIM[86228792]: broad_hpc_drv.c(2689) 219 %% 
ERROR: port 0:ge5: timeout draining packets (2377 cells remain)

Corresponding ports fail to pass traffic, though the port is up and its status 
otherwise looks fine.

Note: This condition is typically detected by the txqmonitor function, which 
may then issue messages including
"... Tx queue for interface <port#> is in stalled mode".
These txqmonitor messages can be helpful here because they report the affected 
port number in the conventional format.

Solution/Workaround
Upgrade to firmware 6.42.09.0005 or higher.
Release notes<http://extranet.enterasys.com/downloads/> state, in the 'Firmware 
Changes and Enhancements' section:
15297 Addressed an issue associated with the switch port state machine which 
could potentially cause device ports to lockup.

Pre-upgrade workaround: Reboot the switch.



Regards,

Andy

Service Desk: +44 (0)845 850 1177

Number One
Paper Mill Drive
Church Hill South,
Redditch,
B98 8QJ
Telephone: +44 (0)845 850 5577

From: Rob Willcox [mailto:[email protected]]
Sent: 13 January 2012 21:01
To: Enterasys Customer Mailing List
Cc: [email protected]; [email protected]; Mike Seitz
Subject: [enterasys] New B3G124-48 errors

I just deployed a brand new, out of the box, B3G124-48 w/ 1 MGBIC-LC01 which 
connects via fiber to another brand new B3G124-48 w/ MGBIC-LC01.
One of the switches locked up night before last.  A "Show Support" revealed 
this error: SIM[258809704]: BROAD_HPC_DRV.C(2689) 12 %% ERROR %% PORT 1:GE6: 
TIMEOUT DRAINING PACKETS (707 CELLS REMAIN)

There are several of these entries.  The number in brackets behind the 
SIM[xxxxxxxx] change, as do the (XXX cells remain).

Any ideas as to what this could be?

Rob Willcox
LAN Manager, City of Shreveport
505 Travis Street, Suite 250
Shreveport, LA  71101
(318) 673-5706

[email protected]<mailto:[email protected]>

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