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adrianimohamed asked on

Cisco Pix 501 - "Line protocol down on eth0"

General Overview;

I have comcast dsl modem w/ boost connecting directly to my pix 501 with a crossover.
On eth0 i am not able to bring that port online. The message for some reason keeps showing "line protocol down-  see below.
I use a cross and a straight from the modem to the pix - dnw.
Also, i did the reboot thing but no dice - dnw

Any help with this is much appericated.

Thanks.
AIM

(dnw = did not work)
nterface ethernet0 "outside" is up, line protocol is down
  Hardware is i82559 ethernet, address is 0009.4360.f434
  MTU 1500 bytes, BW 10000 Kbit half duplex
        0 packets input, 0 bytes, 0 no buffer
        Received 0 broadcasts, 0 runts, 0 giants
        0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
        0 packets output, 0 bytes, 0 underruns
        0 output errors, 0 collisions, 0 interface resets
        0 babbles, 0 late collisions, 0 deferred
        0 lost carrier, 0 no carrier
        input queue (curr/max blocks): hardware (128/128) software (0/0)
        output queue (curr/max blocks): hardware (0/0) software (0/0)

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Last Comment
peterhicks

8/22/2022 - Mon
debuggerau

'line protocol is down' means that the connection to its Ethernet port is open (cable removed).
So I'd be checking and rechecking the cabling and terminations.
Careful when putting in the wrong cable types, it may shutdown that port as a consequence and need a cold reboot.

ASKER
adrianimohamed

did the dance already.
from cross over to straight to reboot - nothing!
could the port be dead ?
if so, how can i tell - besides not working?
should i get a new pix 501?
cables seem to be working fine.

at this point not sure what to do.
debuggerau

before you spend some hard earned, have you tested the cable and modem with a PC or notebook? Once I was confident that the port was good, I'd be looking seriously at the 501 but I find these go faulty rarely compared with cables and connectors...
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peterhicks

Plug a PC in to the 501 using a crossover cable - does the port transition to up/up?

Plug a PC in to the DSL modem using a straight-through cable - can you pass traffic?
ASKER
adrianimohamed

cool.

peterhicks: Plug a PC in to the 501 using a crossover cable - does the port transition to up/up?
adrianimohamed:  no sir! that is the problem. i disable the port re-enable the port. also reboot. eth1 is up/up but tried everyting to get eth0 up

Plug a PC in to the DSL modem using a straight-through cable - can you pass traffic?
adrianimohamed: yes sir. its powering the internet right now.

debuggerau: before you spend some hard earned, have you tested the cable and modem with a PC or
notebook?
adrianimohamed: yes i have - cross works just fine. actually if i put the cross-over in eth1 and straight on eth2 going to the pc - works fine.

thanks for your help

aim.
ASKER CERTIFIED SOLUTION
debuggerau

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peterhicks

Just to add - if your PIX isn't under a maintenance contract and you have a VLAN-capable switch, you could trunk between the PIX and switch and have your inside and outside interfaces as sub-interfaces so you only need to use the working port.
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