interface issue on 2621

Unanswered Question
May 8th, 2008

hi everyone,

i have two enet port on this router



issue is i have a pc1 connected with .5 and pinging the router fe0/0 interface and pc1 was successfull from the router.however for pc2 connected with .21 i could only ping the router interface fe0/1 .17 but cannot ping pc2 .21 from the router.

with sh ip int bri. all interface are up and show int fa0/1 displays up up as shown.wat could be wrong pls.

show ip int bri

Interface IP-Address OK? Method Status Prot


FastEthernet0/0 YES NVRAM up up

Serial0/0 YES NVRAM down down

FastEthernet0/1 YES NVRAM up up

Serial0/1 YES NVRAM down down

Serial0/2 YES NVRAM up up

Serial0/3 YES NVRAM up up

Serial1/0 YES NVRAM up up

Serial1/1 YES NVRAM down down

Serial1/2 YES NVRAM up up

Serial1/3 YES NVRAM down down

#show int fa 0/1

FastEthernet0/1 is up, line protocol is up

Hardware is AmdFE, address is 0017.945d.5921 (bia 0017.945d.5921)

Description: HUBpth2h2

Internet address is

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 255/255, txload 1/255, rxload 1/255

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 00:00:03, output hang never

Last clearing of "show interface" counters never

Input queue: 1/75/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 1000 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

274 packets input, 37966 bytes

Received 98 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog

0 input packets with dribble condition detected

140 packets output, 15670 bytes, 0 underruns

0 output errors, 0 collisions, 2 interface resets

0 babbles, 0 late collision, 0 deferred

5 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

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Overall Rating: 4 (1 ratings)
Paolo Bevilacqua Thu, 05/08/2008 - 06:51

PCs with XP can have FW that prevent unsolicited pings , check and configure as necessairy

olakunle06 Thu, 05/08/2008 - 11:03

thanks for the response,i moved pc 2 to where pc1 was and it worked.transferred pc1 to pc2,could not ping yet,am having same problems on three other routers.can i get a solution pls

Jon Marshall Thu, 05/08/2008 - 23:40



Is fe0/1 address a typo above as your "sh ip int br" output shows fe0/1 having an address of not ie.

FastEthernet0/0 YES NVRAM up up

Serial0/0 YES NVRAM down down

FastEthernet0/1 YES NVRAM up up

What subnet masks are you using on these interfaces and on the PC's ?


olakunle06 Fri, 05/09/2008 - 00:54

is a typo,







am having same issue on three other routers,how do i solve his prob pls

Jon Marshall Fri, 05/09/2008 - 02:28

Can you

1) post full router config

2) post "sh version" from router

3) post output of "ipconfig" on each PC.



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