We have an all Ethernet over wireless 802.11A (designed as Point to Point - not running PPPoE)spanning many sites
the post concerns only 2 of the sites
site #1 has a 10Mpbs router (2621) and site #2 has a 10/100 router (2621XM) so that WAN is scaled down to 10Mbps full duplex.
a couple months ago, we replaced all the networking equiptment in site #2 because of a lightning storm (lightning hit the Antenna and static electricity fried everything in it's path Routers and Switches)
With that said after we replaced the equiptment, we began to see a high amount of CRC errors on the WAN link between the 2 sites. I suspect the Multiplexer that is converting ethernet to ds3 format is to blame. all was well before the new products. anyone else seen this before?
I'm thinking it's more likely a setting between the muxes. The first place I'd check is the settings for "C Bit."
It almost sounds like one side is set for C bit and the other side is set for M13 (M-1-3 or D4 same thing, different terms).
You don't mention what the muxes are, or whether you've looked at the MUX stats to see if the receiver of the mux(es) are showing similar CRC / framing errors.
If the muxes are mutalating the Ethernet, you wouldn't know until the next Ethernet port. You may be able to check by putting a "Sniffer" / protocol analyzer in-between the MUX and the AP/bridge. The analyzer show if the CRC for the Ethernet Frame/packet is correct for the payload. If not, the MUX is transmitting bad data (which could be caused by the DS3 side of the link being misconfigured).
If the data checks OK from the MUX, then there's some other issues at the receiver of the AP; perhaps you have some encaps setting, the cable could be bad/poorly constructed/ out-of-spec, etc ...
I hope for this setup you now have a fiber segment between the rooftop equipment (AP/Antenna) and the rest of your network stuff. I'm still suprised that Cisco doesn't have a "fiber link only" verson of their units, just for external p2p setups.
Take a shot at sniffing the AP--> MUX segment and let us know what you find.
Transferring Crash file from standby:
Login to the Active WLC in HA.
(Cisco Controller) >transfer upload datatype crash
(Cisco Controller) >transfer upload filename <Desired filename>
(Cisco Controller) >transfer up...
This is the start of a display filter cross reference between Wireshark and OmniPeek.
The 1st installment is a table of advanced filters. More filters will be added as time allows.
It is a living doc, so check back for changes every so often
Please feel ...
I have created a Powershell script to automatically add a Wireless Guest User on Cisco WLCs. (tested on 2500 Series)
The script should be completely self explanatory.
Powershell SNMP Module (Install-Module -Name SNMP)
SNMP Write Access to...