I bought a used 2950 and everything seemed ok with it until I checked the interface counters.
For some reason, none of the physical port's counters are working and they all stay at zero despite traffic passing through the switch. The routers and servers on the switch ports are working fine, but I dont get why no traffic is registering on the interface counters. The only one thats working is the vlan interface
dukest#show int fa0/2 FastEthernet0/2 is up, line protocol is up (connected) Hardware is Fast Ethernet, address is 000d.bd02.60c2 (bia
000d.bd02.60c2) Description: pm-b MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation ARPA, loopback not set Keepalive set (10 sec) Half-duplex, 10Mb/s, media type is 100BaseTX input flow-control is unsupported output flow-control is unsupported ARP type: ARPA, ARP Timeout 04:00:00 Last input never, output 00:00:00, output hang never Last clearing of "show interface" counters 07:11:16 Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 0 packets input, 0 bytes, 0 no buffer Received 0 broadcasts (0 multicast) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored 0 watchdog, 0 multicast, 0 pause input 0 input packets with dribble condition detected 0 packets output, 0 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 babbles, 0 late collision, 0 deferred 0 lost carrier, 0 no carrier, 0 PAUSE output 0 output buffer failures, 0 output buffers swapped out dukest#show int fa0/24 FastEthernet0/24 is up, line protocol is up (connected) Hardware is Fast Ethernet, address is 000d.bd02.60d8 (bia 000d.bd02.60d8) Description: fibre-trunk MTU 1500 bytes, BW 100000 Kbit, DLY 1000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation ARPA, loopback not set Keepalive set (10 sec) Full-duplex, 100Mb/s, media type is 100BaseTX input flow-control is unsupported output flow-control is unsupported ARP type: ARPA, ARP Timeout 04:00:00 Last input 00:00:00, output 00:00:01, output hang never Last clearing of "show interface" counters 07:11:24 Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 0 packets input, 0 bytes, 0 no buffer Received 1 broadcasts (0 multicast) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored 0 watchdog, 0 multicast, 0 pause input 0 input packets with dribble condition detected 0 packets output, 0 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 babbles, 0 late collision, 0 deferred 0 lost carrier, 0 no carrier, 0 PAUSE output 0 output buffer failures, 0 output buffers swapped out dukest#Yet the vlan int shows traffic
30dukest#show int Vlan1 is administratively down, line protocol is down Hardware is CPU Interface, address is 000d.bd02.60c0 (bia 000d.bd02.60c0) MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation ARPA, loopback not set ARP type: ARPA, ARP Timeout 04:00:00 Last input never, output never, output hang never Last clearing of "show interface" counters 07:17:48 Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 0 packets input, 0 bytes, 0 no buffer Received 0 broadcasts (0 IP multicast) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored 0 packets output, 0 bytes, 0 underruns 0 output errors, 0 interface resets 0 output buffer failures, 0 output buffers swapped out Vlan901 is up, line protocol is up Hardware is CPU Interface, address is 000d.bd02.60c0 (bia 000d.bd02.60c0) Internet address is 10.12.96.2/29 MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation ARPA, loopback not set ARP type: ARPA, ARP Timeout 04:00:00 Last input 00:00:00, output never, output hang never Last clearing of "show interface" counters 07:17:49 Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 4000 bits/sec, 6 packets/sec 27136 packets input, 2083573 bytes, 0 no buffer Received 3352 broadcasts (0 IP multicast) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored 169346 packets output, 18185340 bytes, 0 underruns 0 output errors, 0 interface resets 0 output buffer failures, 0 output buffers swapped outdukest#show post Passed dukest#show ver Cisco Internetwork Operating System Software IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(22)EA1b, RELEASE SOFTWARE (fc1) Copyright (c) 1986-2004 by cisco Systems, Inc. Compiled Tue 24-Aug-04 00:12 by yenanh Image text-base: 0x80010000, data-base: 0x8055C000
ROM: Bootstrap program is C2950 boot loader
dukest uptime is 10 hours, 1 minute System returned to ROM by power-on System restarted at 23:07:13 EDT Wed Jul 12 2006 System image file is "flash:/c2950-i6q4l2-mz.121-22.EA1b.bin"
cisco WS-C2950-24 (RC32300) processor (revision J0) with 20873K bytes of memory. Processor board ID FOC0811X19G Last reset from system-reset Running Standard Image
24 FastEthernet/IEEE 802.3 interface(s)32K bytes of flash-simulated non-volatile configuration memory. Base ethernet MAC Address: 00:0D:BD:02:60:C0 Motherboard assembly number: 73-5781-11 Power supply part number: 34-0965-01 Motherboard serial number: FOC07291R5F Power supply serial number: PHI072206CW Model revision number: J0 Motherboard revision number: A0 Model number: WS-C2950-24 System serial number: FOC0811X19G Configuration register is 0xF
dukest#
port configs are pretty standard
interface FastEthernet0/1 description pm-a switchport access vlan 901 spanning-tree portfast ! interface FastEthernet0/2 description pm-b switchport access vlan 901 spanning-tree portfast !
interface FastEthernet0/24 description fibre-trunk- switchport access vlan 901 switchport trunk native vlan 901 switchport trunk allowed vlan 301,901 switchport mode trunk speed 100 duplex full no cdp enable spanning-tree portfast
interface Vlan1 no ip address no ip route-cache shutdown ! interface Vlan901 ip address 10.12.96.2 255.255.255.248 no ip route-cache !
-------------------------------------------------------- Mike Tancsa, Sentex communications