Hello  I have 4 devices about the light system and these device connected cisco 2960 switch I can access these devices (ping ), after some time  I cannot access  I see "switch port up and connect on 2960 switch" if I use dummy switch these devices never disconnect and every time access  I tried no cdp neighbor , speed 10 , no auto-negotiation can you share experience or advice these situations         ... View more

we have vcsc and vcse servers the private ip  of vcsc is supposed to reach the public ip of vcse in order to work properly on local network although we write manual nat rule ,vcsc server cannot ping public ip of vcse . note that both servers are on same network attached you can see nat rules we wrote can you help me this issue ... View more

we have cisco 5520 wireless controller and 2 different aps : AP1852E and AP1810W device version is 8.2.151.0 . we have voice ssid  in the campus network dect phones connected to voice ssid work properly inside the building without any delay or data loss during phone conversations however , one of the floors in the building is surrounded with glass and the connection fails or conversation failures occur  when the user is on this floor what can be the reason behind this situation ... View more

we have cisco 5520 wireless controller and 2 different aps : AP1852E and AP1810W  device version is  8.2.151.0 . we have voice ssid  in the campus network dect phones connected to voice ssid work properly inside the building without any delay or data loss during phone conversations however , one of the floors in the building is surrounded with glass and the connection fails or conversation failures occur  when the user is on this floor what can be the reason behind this situation ... View more

Hello all  i have 1 cisco 6500 and 2 nexus 5k(vpc) in my topology cisco 6500 connected nexus  by 2 fiber cables each nexus (channel-group) i give a "input errors" one of the interface on cisco nexus what is the reason  tanks Ethernet1/1 is up admin state is up, Dedicated Interface Belongs to Po3 Hardware: 1000/10000 Ethernet, address: 00c8.8bcc.37aa (bia 00c8.8bcc.37aa) Description: ****to cisco 6500**** MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec reliability 255/255, txload 1/255, rxload 1/255 Encapsulation ARPA, medium is broadcast Port mode is trunk full-duplex, 10 Gb/s, media type is 10G Beacon is turned off Auto-Negotiation is turned on Input flow-control is off, output flow-control is off Auto-mdix is turned off Rate mode is dedicated Switchport monitor is off EtherType is 0x8100 EEE (efficient-ethernet) : n/a Last link flapped 19:26:31 Last clearing of "show interface" counters 19:29:55 3 interface resets 30 seconds input rate 1910056 bits/sec, 199 packets/sec 30 seconds output rate 200 bits/sec, 0 packets/sec Load-Interval #2: 5 minute (300 seconds) input rate 384.33 Kbps, 48 pps; output rate 248 bps, 0 pps RX 1794008 unicast packets 2427246 multicast packets 447912 broadcast packets 4669166 input packets 2709425652 bytes 1563979 jumbo packets 0 storm suppression packets 0 runts 459 giants 0 CRC 0 no buffer 459 input error 0 short frame 0 overrun 0 underrun 0 ignored 0 watchdog 0 bad etype drop 0 bad proto drop 0 if down drop 0 input with dribble 0 input discard 0 Rx pause TX 10 unicast packets 13588 multicast packets 153 broadcast packets 13751 output packets 2246280 bytes 0 jumbo packets 0 output error 0 collision 0 deferred 0 late collision 0 lost carrier 0 no carrier 0 babble 0 output discard 0 Tx pause ... View more