01-25-2009 03:35 AM - edited 03-06-2019 03:38 AM
Hi,
I've couple of 4948 in my setup but today morning, my colleague reported that one of our server is not responding. I checked the repective port on switch and that port was UP and UP. But to my surprise there were lots of packet drops in there. Logs revealed following messages for that port:
5w4d: %C4K_HWPORTMAN-4-BLOCKEDTXQUEUE: Blocked transmit queue HwTxQId3 on Switch Phyport Gi1/23, count=28014
5w4d: %C4K_HWPORTMAN-4-BLOCKEDTXQUEUE: Blocked transmit queue HwTxQId1 on Switch Phyport Gi1/23, count=28014
5w4d: %C4K_HWPORTMAN-4-BLOCKEDTXQUEUE: Blocked transmit queue HwTxQId3 on Switch Phyport Gi1/23, count=28129
5w4d: %C4K_HWPORTMAN-4-BLOCKEDTXQUEUE: Blocked transmit queue HwTxQId1 on Switch Phyport Gi1/23, count=28129
5w4d: %C4K_HWPORTMAN-4-BLOCKEDTXQUEUE: Blocked transmit queue HwTxQId3 on Switch Phyport Gi1/23, count=28244
5w4d: %C4K_HWPORTMAN-4-BLOCKEDTXQUEUE: Blocked transmit queue HwTxQId1 on Switch Phyport Gi1/23, count=28244
5w4d: %C4K_HWPORTMAN-4-BLOCKEDTXQUEUE: Blocked transmit queue HwTxQId3 on Switch Phyport Gi1/23, count=28359
5w4d: %C4K_HWPORTMAN-4-BLOCKEDTXQUEUE: Blocked transmit queue HwTxQId1 on Switch Phyport Gi1/23, count=28359
5w4d: %C4K_HWPORTMAN-4-BLOCKEDTXQUEUE: Blocked transmit queue HwTxQId3 on Switch Phyport Gi1/23, count=28474
5w4d: %C4K_HWPORTMAN-4-BLOCKEDTXQUEUE: Blocked transmit queue HwTxQId1 on Switch Phyport Gi1/23, count=28474
5w4d: %C4K_HWPORTMAN-4-BLOCKEDTXQUEUE: Blocked transmit queue HwTxQId3 on Switch Phyport Gi1/23, count=28589
5w4d: %C4K_HWPORTMAN-4-BLOCKEDTXQUEUE: Blocked transmit queue HwTxQId1 on Switch Phyport Gi1/23, count=28589
5w4d: %C4K_HWPORTMAN-4-BLOCKEDTXQUEUE: Blocked transmit queue HwTxQId3 on Switch Phyport Gi1/23, count=28704
5w4d: %C4K_HWPORTMAN-4-BLOCKEDTXQUEUE: Blocked transmit queue HwTxQId1 on Switch Phyport Gi1/23, count=28704
Can anyone suggest what these messages are for and how to fix them. Port configurations are very simple like so many other working ports.
Regards,
01-25-2009 04:21 AM
The message indicates that a port is blocked or limited. This could either be a hardware issue or a speed/duplex mismatch.
Some other things you might try to resolve the issue is to issue a shot/no shut command for the interface, move the connected device to a different port and see if the problem is still there.
01-25-2009 04:38 AM
From the output interpreter.
ERROR MESSAGE NOTIFICATIONS (if any)
%C4K_HWPORTMAN-4-BLOCKEDTXQUEUE (x14):Blocked transmit queue HwTxQId[dec]
on [char], count=[dec]
Explanation: A transmit queue on a port is blocked. Bad hardware or continuous
pause frames from the peer can cause this problem.
Recommended Action: Determine if the peer is continually sending pause frames
to the port. If so, troubleshoot the peer. If not, contact your technical support
representative.
%C4K_HWPORTMAN-4-BLOCKEDTXQUEUE (x0): Blocked transmit queue HwTxQId[dec] on
[char], count=[dec]
Explanation: This rate-limited message indicates that a transmit queue and traffic
on a port is blocked or limited for reasons other than being "paused". You may
see the blocked transmit queue message if the supervisor engine is not able to
send packets to the switching module because it received a busy bit from the switching
module. A hardware failure or a speed/duplex mismatch can cause this problem.
Recommended Action: Configure both sides of the link to autonegotiate for speed
and duplex. Issue the shut/no shut command to recover the port. If the problem
persists, move the connected device to another port and see if the problem happens
there. If neither of these solves the problem, issue the hw-module reset command
in order to reboot the switch and reset the line card. You could also upgrade the
the Cisco IOS version to the 12.2(25)EWA2 or 12.2(25)SG releases.
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