<div dir="ltr"><span style="font-family:arial,sans-serif;font-size:13px">Hi all,</span><div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">I believe I have a failing switch on my hands and I'm wondering if you might be able to provide an assessment based on the symptoms I've seeing.</div>
<div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">I'm currently running a Foundry FESX648-PREM with the following version info:</div><div style="font-family:arial,sans-serif;font-size:13px">
<br></div><div style><div style><font face="arial, sans-serif">SSH@FESX648 Router>show version</font></div><div style><font face="arial, sans-serif"> SW: Version 07.4.00eT3e3 Copyright (c) 1996-2012 Brocade Communications Systems, Inc. All rights reserved.</font></div>
<div style><font face="arial, sans-serif"> Compiled on Dec 11 2013 at 19:00:43 labeled as SXR07400e</font></div><div style><font face="arial, sans-serif"> (4593059 bytes) Primary sxr07400e.bin</font></div><div style>
<font face="arial, sans-serif"> BootROM: Version 07.4.01T3e5 (FEv2)</font></div><div style><font face="arial, sans-serif"> HW: Stackable FESX648-PREM6 (PROM-TYPE FESX648-L3U-IPV6)</font></div><div style><font face="arial, sans-serif">==========================================================================</font></div>
<div style><font face="arial, sans-serif"> Serial #: FL18090011</font></div><div style><font face="arial, sans-serif"> License: SX_V6_HW_ROUTER_IPv6_SOFT_PACKAGE (LID: XXXXXXXXXXX)</font></div><div style>
<font face="arial, sans-serif"> P-ASIC 0: type 0111, rev 00 subrev 01</font></div>
<div style><font face="arial, sans-serif"> P-ASIC 1: type 0111, rev 00 subrev 01</font></div><div style><font face="arial, sans-serif"> P-ASIC 2: type 0111, rev 00 subrev 01</font></div><div style><font face="arial, sans-serif"> P-ASIC 3: type 0111, rev 00 subrev 01</font></div>
<div style><font face="arial, sans-serif">==========================================================================</font></div><div style><font face="arial, sans-serif"> 300 MHz Power PC processor 8245 (version 0081/1014) 66 MHz bus</font></div>
<div style><font face="arial, sans-serif"> 512 KB boot flash memory</font></div><div style><font face="arial, sans-serif"> 8192 KB code flash memory</font></div><div style><font face="arial, sans-serif"> 256 MB DRAM</font></div>
<div style><font face="arial, sans-serif">The system uptime is 26 minutes 49 seconds</font></div><div style><font face="arial, sans-serif">The system : started=warm start reloaded=by "reload"</font></div><div style="font-family:arial,sans-serif;font-size:13px">
<br></div></div><div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">Quick summary of the symptoms:</div><div style="font-family:arial,sans-serif;font-size:13px">
<br></div><div style="font-family:arial,sans-serif;font-size:13px">1. These problems started only after ~15 servers were connected to the switch. Although many servers were connected, utilization remains low, only ~40Mbit on a 1Gbit uplink.</div>
<div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">2. I just rebooted my switch 20 minutes ago, but I'm already seeing a ton of FCS errors across many ports: <a href="http://pbrd.co/SABLtk" target="_blank">http://pbrd.co/SABLtk</a><br>
</div><div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">3. Inexplicably high and erratic ping times (80ms, instead of the usual 20ms over the same route and variation of +- 20ms on every ping). Ping times were low and stable before many servers were connected.</div>
<div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">4. High packet loss. Before a lot of servers were connected, there was no packet loss. Yesterday, the packet loss was hovering around 10%. It seems to be worsening now. Today the average packet loss is 20%.</div>
<div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">Screen capture: <a href="http://pbrd.co/SABZ3D" target="_blank">http://pbrd.co/SADKO7</a><br></div>
<div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">5. Yesterday I was also able to temporarily eliminate packet loss and the high ping times by disabling specific ports. Today, disabling ports 7 and 11 has no effect.</div>
<div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">6. The cross-connect cables were suspect, but all cables have since been tested with a MicroTest PentaScanner and all passed. We even replaced the CAT5 cross-connect with a machined and molded CAT6 cable -- the same packet loss and erratic ping times persisted.</div>
<div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">7. Other strange things have happened. Yesterday I attempted to connect up two new servers to the switch on port 37 and 38. Ports 5-48 belong to the same default VLAN. The servers could connect to the switch, and ping the gateway IP, but they could not ping to the outside world. I then moved the CAT5 cables to ports 22 and 23 -- same VLAN -- and everything worked perfectly.</div>
<div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">Does this seem like a failing switch? Are there any further diagnostic tests I could run to verify this?</div>
<div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">Thanks,</div><div style="font-family:arial,sans-serif;font-size:13px">Elliot</div><div><br></div>
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