Lock the ports on the switch to 100FD, try a different switch...

Heres a followup.

This is a show int on the interface.

FastEthernet2/0 is up, line protocol is up Hardware is AmdFE, address is 0050.547b.e8c0 (bia 0050.547b.e8c0) Internet address is x.x.x.x/24 MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, rely 255/255, load 5/255 Encapsulation ARPA, loopback not set Keepalive set (10 sec) Full-duplex, 100Mb/s, 100BaseTX/FX ARP type: ARPA, ARP Timeout 04:00:00 Last input 00:00:00, output 00:00:00, output hang never Last clearing of "show interface" counters never Queueing strategy: fifo Output queue 0/240, 905945 drops; input queue 0/240, 286 drops 30 second input rate 3397000 bits/sec, 1750 packets/sec 30 second output rate 2246000 bits/sec, 1989 packets/sec 55263194 packets input, 4227545542 bytes Received 185916 broadcasts, 0 runts, 0 giants, 286 throttles 1158 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored 0 watchdog, 0 multicast 0 input packets with dribble condition detected 52516038 packets output, 801075852 bytes, 0 underruns 0 output errors, 0 collisions, 4 interface resets 0 babbles, 0 late collision, 0 deferred 0 lost carrier, 0 no carrier 0 output buffer failures, 0 output buffers swapped out

Now, those input errors are not reflected on the switch.

Also, a show controller fastether 2/0 shows the following:

Interface FastEthernet2/0 Hardware is AMD Laguna ADDR: 60D7F840, FASTSEND: 6002AEB4, MCI_INDEX: 0 DIST ROUTE ENABLED: 0 Route Cache Flag: 1 LADRF=0x0080 0x0100 0x0002 0x0000 CSR0 =0x00000072, CSR3 =0x00001044, CSR4 =0x0000491D, CSR15=0x00000180 CSR80 =0x00009900, CSR114=0x00000000, CRDA =0x0257CA40, CXDA=0x0257CFE0 CSR5 =0x00000001, CSR7 =0x00000820, CSR100=0x0000F000, CSR125=0x00005C3C BCR2 =0x00000000, BCR9 =0x00000001, BCR18 =0x000019E0, BCR22 =0x0000FF06 BCR25 =0x000000FF, BCR26 =0x00000080, BCR27 =0x00000010, BCR32=0x00004000 HW filtering information: Promiscuous Mode Disabled, PHY Addr Enabled, Broadcast Addr Enabled PHY Addr=0050.547B.E8C0, Multicast Filter=0x0080 0x0100 0x0002 0x0000 amdp2_instance=0x60D81170, registers=0x3D000000, ib=0x257C7E0 rx ring entries=64, tx ring entries=128 rxring=0x257C840, rxr shadow=0x60D81364, rx_head=32, rx_tail=0 txring=0x257CC80, txr shadow=0x60D81490, tx_head=54, tx_tail=54, tx_count=0 Software MAC address filter(hash:length/addr/mask/hits): 0x58: 0 0100.5e00.0006 0000.0000.0000 0 0x5B: 0 0100.5e00.0005 0000.0000.0000 0 0xC0: 0 0100.0ccc.cccc 0000.0000.0000 0 spurious_idon=0, filtered_pak=0, throttled=286, enabled=286, disabled=0 rx_framing_err=0, rx_overflow_err=1158, rx_buffer_err=0 rx_bpe_err=0, rx_soft_overflow_err=0, rx_no_enp=0, rx_discard=0 tx_one_col_err=0, tx_more_col_err=0, tx_no_enp=0, tx_deferred_err=0 tx_underrun_err=0, tx_late_collision_err=0, tx_loss_carrier_err=0 tx_exc_collision_err=0, tx_buff_err=0, fatal_tx_err=0 hsrp_conf=0, need_af_check=0 PHY registers: Register 0x00: 2100 784F 2000 5C01 01E1 0000 0000 0000 Register 0x08: 0000 0000 0000 0000 0000 0000 0000 0000 Register 0x10: 0000 0000 0000 FFFF 0000 0001 8062 Register 0x18: 8020 08A0 0000 1800 A3B9

Note the rx_overflow errors in line with the fe input errors. They seem to coincide with periods of unreachability but, we already replaced the card so..

Jason

--- Jason Slagle - CCNA - CCDA Network Administrator - Toledo Internet Access - Toledo Ohio - raistlin@tacorp.net - jslagle@toledolink.com - WHOIS JS10172 -----BEGIN GEEK CODE BLOCK----- Version: 3.12 GE d-- s:+ a-- C++ UL+++ P--- L+++ E- W- N+ o-- K- w--- O M- V PS+ PE+++ Y+ PGP t+ 5 X+ R tv+ b+ DI+ D G e+ h! r++ y+ ------END GEEK CODE BLOCK------