Hi all,
I am troubleshooting a couple of servers which users say they are losing
access to intermittently. I am seeing increasing Rcv-errors on the
switch ports and a direct correlation on the In-lost on the "show mac"
command.
Instinctively, I would think this means that the errors are being
received on the switch port from the NIC. According to Cisco's website,
the in-lost errors are caused by an excessive input rate of traffic to
the switch port. Which sounds like the switch port is not able to
buffer all the information it is receiving. Is there a way to see the
buffers on a switch port? I know you can in a router but I don't see a
command to do this on the switch.
Here is a snippet of what I am seeing. (Keep in mind, I am not even
sure this is the cause of the problem the users are experiencing but
this is the only unusual item I am seeing.)
12:00 Feb 2, 2002
hodcsan1> (enable) sh port 2/8
Port Name Status Vlan Level Duplex Speed Type
----- ------------------ ---------- ---------- ------ ------ -----
------------
2/8 HOEXMB1 87.140 connected 1 normal full 100
10/100BaseTX
Port AuxiliaryVlan AuxVlan-Status
----- ------------- --------------
2/8 none none
Port Security Violation Shutdown-Time Age-Time Max-Addr Trap
IfIndex
----- -------- --------- ------------- -------- -------- --------
-------
2/8 disabled shutdown 0 0 1 disabled
18
Port Num-Addr Secure-Src-Addr Age-Left Last-Src-Addr
Shutdown/Time-Left
----- -------- ----------------- -------- -----------------
------------------
2/8 0 - - - -
-
Port Status Channel Admin Ch
Mode Group Id
----- ---------- -------------------- ----- -----
2/8 connected off 30 0
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize
----- ---------- ---------- ---------- ---------- ---------
2/8 - 6 0 20 0
Port Single-Col Multi-Coll Late-Coll Excess-Col Carri-Sen Runts
Giants
----- ---------- ---------- ---------- ---------- --------- ---------
---------
2/8 0 0 0 0 0 14
0
hodcsan1> (enable) sh port 2/11
Port Name Status Vlan Level Duplex Speed Type
----- ------------------ ---------- ---------- ------ ------ -----
------------
2/11 HOEXMB3 87.144 connected 1 normal full 100
10/100BaseTX
Port AuxiliaryVlan AuxVlan-Status
----- ------------- --------------
2/11 none none
Port Security Violation Shutdown-Time Age-Time Max-Addr Trap
IfIndex
----- -------- --------- ------------- -------- -------- --------
-------
2/11 disabled shutdown 0 0 1 disabled
21
Port Num-Addr Secure-Src-Addr Age-Left Last-Src-Addr
Shutdown/Time-Left
----- -------- ----------------- -------- -----------------
------------------
2/11 0 - - - -
-
Port Status Channel Admin Ch
Mode Group Id
----- ---------- -------------------- ----- -----
2/11 connected off 30 0
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize
----- ---------- ---------- ---------- ---------- ---------
2/11 - 9 0 24 0
Port Single-Col Multi-Coll Late-Coll Excess-Col Carri-Sen Runts
Giants
----- ---------- ---------- ---------- ---------- --------- ---------
---------
2/11 0 0 0 0 0 15
0
Last-Time-Cleared
--------------------------
Fri Feb 1 2002, 09:56:38
hodcsan1> (enable)
hodcsan1> (enable) sh port 2/16
Port Name Status Vlan Level Duplex Speed Type
----- ------------------ ---------- ---------- ------ ------ -----
------------
2/16 HOEXPF1 87.152 connected 1 normal full 100
10/100BaseTX
Port AuxiliaryVlan AuxVlan-Status
----- ------------- --------------
2/16 none none
Port Security Violation Shutdown-Time Age-Time Max-Addr Trap
IfIndex
----- -------- --------- ------------- -------- -------- --------
-------
2/16 disabled shutdown 0 0 1 disabled
26
Port Num-Addr Secure-Src-Addr Age-Left Last-Src-Addr
Shutdown/Time-Left
----- -------- ----------------- -------- -----------------
------------------
2/16 0 - - - -
-
Port Status Channel Admin Ch
Mode Group Id
----- ---------- -------------------- ----- -----
2/16 connected off 31 0
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize
----- ---------- ---------- ---------- ---------- ---------
2/16 - 27 0 27 0
Port Single-Col Multi-Coll Late-Coll Excess-Col Carri-Sen Runts
Giants
----- ---------- ---------- ---------- ---------- --------- ---------
---------
2/16 0 0 0 0 0 0
0
Last-Time-Cleared
--------------------------
Fri Feb 1 2002, 09:56:38
hodcsan1> (enable)
MAC Dely-Exced MTU-Exced In-Discard Lrn-Discrd In-Lost Out-Lost
-------- ---------- ---------- ---------- ---------- ----------
----------
2/8 0 0 0 0 20
0
MAC Dely-Exced MTU-Exced In-Discard Lrn-Discrd In-Lost Out-Lost
-------- ---------- ---------- ---------- ---------- ----------
----------
2/11 0 0 0 0 24
0
MAC Dely-Exced MTU-Exced In-Discard Lrn-Discrd In-Lost Out-Lost
-------- ---------- ---------- ---------- ---------- ----------
----------
2/16 0 0 0 0 27
0
hodcsan2> (enable) sh port 2/8
Port Name Status Vlan Level Duplex Speed Type
----- ------------------ ---------- ---------- ------ ------ -----
------------
2/8 HOEXMB2 87.142 connected 1 normal full 100
10/100BaseTX
Port AuxiliaryVlan AuxVlan-Status
----- ------------- --------------
2/8 none none
Port Security Violation Shutdown-Time Age-Time Max-Addr Trap
IfIndex
----- -------- --------- ------------- -------- -------- --------
-------
2/8 disabled shutdown 0 0 1 disabled
18
Port Num-Addr Secure-Src-Addr Age-Left Last-Src-Addr
Shutdown/Time-Left
----- -------- ----------------- -------- -----------------
------------------
2/8 0 - - - -
-
Port Status Channel Admin Ch
Mode Group Id
----- ---------- -------------------- ----- -----
2/8 connected off 46 0
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize
----- ---------- ---------- ---------- ---------- ---------
2/8 - 19 0 19 0
Port Single-Col Multi-Coll Late-Coll Excess-Col Carri-Sen Runts
Giants
----- ---------- ---------- ---------- ---------- --------- ---------
---------
2/8 0 0 0 0 0 0
0
hodcsan2> (enable) sh port 2/10
Port Name Status Vlan Level Duplex Speed Type
----- ------------------ ---------- ---------- ------ ------ -----
------------
2/10 HOEXMB4 connected 1 normal full 100
10/100BaseTX
Port AuxiliaryVlan AuxVlan-Status
----- ------------- --------------
2/10 none none
Port Security Violation Shutdown-Time Age-Time Max-Addr Trap
IfIndex
----- -------- --------- ------------- -------- -------- --------
-------
2/10 disabled shutdown 0 0 1 disabled
20
Port Num-Addr Secure-Src-Addr Age-Left Last-Src-Addr
Shutdown/Time-Left
----- -------- ----------------- -------- -----------------
------------------
2/10 0 - - - -
-
Port Status Channel Admin Ch
Mode Group Id
----- ---------- -------------------- ----- -----
2/10 connected off 47 0
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize
----- ---------- ---------- ---------- ---------- ---------
2/10 - 8 0 8 0
Port Single-Col Multi-Coll Late-Coll Excess-Col Carri-Sen Runts
Giants
----- ---------- ---------- ---------- ---------- --------- ---------
---------
2/10 0 0 0 0 0 0
0
MAC Dely-Exced MTU-Exced In-Discard Lrn-Discrd In-Lost Out-Lost
-------- ---------- ---------- ---------- ---------- ----------
----------
2/8 0 0 0 0 19
0
MAC Dely-Exced MTU-Exced In-Discard Lrn-Discrd In-Lost Out-Lost
-------- ---------- ---------- ---------- ---------- ----------
----------
2/10 0 0 0 0 8
0
Thank you for any insight you can add.
Heather Buri, CCNP
281-293-6649
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=34100&t=34100
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