Not quite true............
There is a "special" 10BaseT interface for the 4700 that supports
full-duplex.
Observe this show interface from one of our production 4700s:
Name_Replaced>sh int e0
Ethernet0 is up, line protocol is up
Hardware is Am79c970, address is ::::snipped::::
Description: ::::::snipped::::::::
Internet address is ::::::snipped::::::
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 255/255, load 31/255
Encapsulation ARPA, loopback not set, keepalive set (10 sec), Full-duplex
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 28w0d
Queueing strategy: fifo
:::::::::: snip! ::::::::::::::::::
On the encapsulation line, at the end it says Full-duplex.
Now, as far as full duplex on a 2611...... I tried this connected to a 2924
switch and we had a devil of a time trying to figure out what was going on.
The config of the router said one thing but the switch said another. Don't
remember the IOS version though - but it probably wasn't a "T".
Kevin Wigle
----- Original Message -----
From: "John Neiberger"
To:
Sent: Thursday, 14 June, 2001 18:03
Subject: Re: duplex [7:8553]
> This is true of switch ports but the original post was regarding 10BaseT
> interfaces on Cisco routers. In the past, there were no Cisco 10BaseT
> interfaces that supported full duplex. It appears that has changed on
> the 2600/3600 series beginning with IOS 12.0(4)T. It still remains true
> for other platforms as far as I can tell.
>
> John
>
> >>> "Brian" 6/14/01 3:29:28 PM >>>
> Pete you are correct, 10 meg on a hub/repeater is not full duplex, 10
> meg
> switch ports can be full duplex, though are not necessarily that way.
>
> Brian "Sonic" Whalen
> Success = Preparation + Opportunity
>
>
> On Thu, 14 Jun 2001, Peter I. Slow, CCNP wrote:
>
> > I beg to differ.
> > I can set an interface for ten megs and full dup.
> > also.
> > arent swith interfaces full duplez?
> > what about 10 M interfaces?
> > that one i am unsure about...
> > Peter Slow, CCNP Voice Specialist
> > Network Engineer
> > Planetary Networks
> > 535 West 34th Street
> > New York, New York
> > 10001
> >
> > cell: (516)782.1535
> > desk: (646)792.2395
> > mail: [EMAIL PROTECTED]
> >
> > ----- Original Message -----
> > From: John Neiberger
> > To:
> > Sent: Thursday, June 14, 2001 1:39 PM
> > Subject: Re: duplex [7:8553]
> >
> >
> > > Oh, okay. I should have been more specific in my previous email.
> > > Fastethernet can be full or half duplex. Ethernet can only be
> half
> > > duplex which is why it does not mention it in that output. That is
> a
> > > standard 10BaseT interface and can only do 10Mbs and half duplex.
> > >
> > > HTH,
> > > John
> > >
> > > >>> "Vlade" 6/14/01 11:11:03 AM >>>
> > > It is an ethernet. Here is the show int output:
> > > I don't see anything indicating the duplex or half duplex.
> > >
> > > Cisco-4700#sh int eth1
> > > Ethernet1 is up, line protocol is up
> > > Hardware is Am79c970, address is 0060.471f.8b3b (bia
> 0060.471f.8b3b)
> > > Description: To Internal Ethernet
> > > Internet address is 63.109.136.65/28
> > > MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 255/255, load
> > > 8/255
> > > Encapsulation ARPA, loopback not set, keepalive set (10 sec)
> > > 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 17w6d
> > > Queueing strategy: fifo
> > > Output queue 0/150, 0 drops; input queue 0/150, 619 drops
> > > 5 minute input rate 125000 bits/sec, 69 packets/sec
> > > 5 minute output rate 340000 bits/sec, 77 packets/sec
> > > 622847166 packets input, 2416393310 bytes, 0 no buffer
> > > Received 16924 broadcasts, 0 runts, 0 giants
> > > 1 input errors, 1 CRC, 1 frame, 0 overrun, 0 ignored, 0 abort
> > > 0 input packets with dribble condition detected
> > > 734906950 packets output, 2580891812 bytes, 0 underruns
> > > 47 output errors, 4136024 collisions, 0 interface resets
> > > 0 babbles, 0 late collision, 7288239 deferred
> > > 47 lost carrier, 0 no carrier
> > > 0 output buffer failures, 0 output buffers swapped out
> > > Cisco-4700#
> > >
> > > ""John Neiberger"" wrote in message
> > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > > > What type of interface are you talking about?
> > > >
> > > > Serial interfaces are full duplex, ethernet are either half or
> full
> > > but
> > > > the show interface output will indicate the current mode.
> > > >
> > > > >>> "Vlade" 6/14/01 10:35:02 AM >>>
> > > > Is there a way to check if an interface on a router is running
> at
> > > full
> > > > or
> > > > half duplex? Show int shows the bandwidth but not the mode.
> Thanks.
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=8650&t=8553
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