June 24, 2003
Products Affected
| Product | Top Assembly | Printed Circuit Assembly | Comments | ||
|---|---|---|---|---|---|
| Part Number | Rev. | Part Number | Rev. | ||
| PXM-UI-S3 | 800-08932-02, -01 | D, C, B, A | 73-5668-02 | D, C, B, A | Only when the PXM-UI-S3 is used with an PXM1E card. No software dependency. |
Problem Description
PXM1E equipped with PXM-UI-S3 backcard loses up to 20 percent of Ethernet packets when pinged through some brands of hubs.
This problem does not apply to the PXM1 series or PXM45 or PXM45/B equipped with PXM-UI-S3 back cards.
Note: The PXM45/C does not support the PXM-UI-S3.
Background
This problem is the result of low noise tolerance on the Ethernet interface of the PXM-UI-S3.
Problem Symptoms
Pings to the MGX8800 equipped with the PXM1E-type cards and the PXM-UI-S3 may not complete 100 percent of the time. Access to the MGX8800 may be interrupted or appear slow. With Cisco products exhibiting the anomaly, use the show port command. The example given is for a Catalyst 2948. Observe the transmit and receive error counters as shown below.
USNY-2948-0.20> (enable) show port 2/3
Port Name Status Vlan Level Duplex Speed Type
----- ------------------ ---------- ---------- ------ ------ ----- ------------
2/3 connected 1 normal half 10 10/100BaseTX
Port Auxiliary Vlan AuxVlan-Status Inline Powered Power Allocated
Admin Oper Detected mWatt mA @51V
----- ------------- -------------- ----- ------ -------- ----- --------
2/3 none none - - - - -
Port Security Violation Shutdown-Time Age-Time Max-Addr Trap IfIndex
----- -------- --------- ------------- -------- -------- -------- -------
2/3 disabled shutdown 0 0 1 disabled 11
Port Num-Addr Secure-Src-Addr Age-Left Last-Src-Addr Shutdown/Time-Left
----- -------- ----------------- -------- ----------------- ------------------
2/3 0 - - - - -
Port Status Channel Admin Ch
Mode Group Id
----- ---------- -------------------- ----- -----
2/3 connected auto silent 14 0
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize
----- ---------- ---------- ---------- ---------- ---------
2/3 - 0 3 3 0
Port Single-Col Multi-Coll Late-Coll Excess-Col Carri-Sen Runts Giants
----- ---------- ---------- ---------- ---------- --------- --------- ---------
2/3 0 0 0 0 0 3 0
Last-Time-Cleared
--------------------------
Wed Jan 15 2003, 15:45:55
Products from other vendors may have similar statistics as well.
Workaround/Solution
Workaround: None.Solution: Upgrade the PXM-UI-S3 with an PXM-UI-S3/B. Use the upgrade form attached below.
DDTS
| DDTS | Description |
|---|---|
| CSCdx59414(registered customers only) | pxm1e ethernet packet loss |
Upgrade Program
CSCdx59414 PXM-UI-S3 Ethernet interface can drop packets.If you have any questions concerning the upgrade program, you can e-mail upgrades-info@cisco.com.
Note: Fields marked with an asterisk (*) are required fields.