From: Ivan (ivan@iip.net)
Date: Tue Jan 17 2006 - 06:21:42 GMT-3
Show please output packets from f0/24
clear counters
then
sh int f0/24 accou
sh int f0/24 counters
On Monday 16 January 2006 21:13, Mike O wrote:
> Chuck,
>
> I tried it and I seem to be still picking up the MAC of the switch port
>
> FastEthernet0/24 is up, line protocol is up (connected)
> Hardware is Fast Ethernet, address is 0012.005d.0a58 (bia 0012.005d.0a58)
> MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
> reliability 255/255, txload 1/255, rxload 1/255
> Encapsulation ARPA, loopback not set
>
> My cable modem lists that MAC as 1 of 3 allowed which blocks my one host
> from pulling an address.
>
> Any ideas? I tried "no mac-address 0012.005d.0a58 " with no luck.
> ----- Original Message -----
> From: "Church, Chuck" <cchurch@netcogov.com>
> To: "Mike O" <mikeeo@email.msn.com>; "Joseph Eleazar"
> <joseph_eleazar@hotmail.com>; <ccielab@groupstudy.com>
> Sent: Monday, January 16, 2006 11:04 AM
> Subject: RE: OT-switch MAC addresses
>
>
> You need to disable all traffic on the 2950 switchport that would have
> it's own MAC address in the frame. So for the port facing the cable
> modem, disable:
>
> Spanning tree
> Any trunk-negotiation frames
> And channel-negotiation frames
> CDP
>
>
> Chuck Church
> Lead Design Engineer
> CCIE #8776, MCNE, MCSE
> Netco Government Services - Design & Implementation
> 1210 N. Parker Rd.
> Greenville, SC 29609
> Home office: 864-335-9473
> Cell: 703-819-3495
> cchurch@netcogov.com
> PGP key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x4371A48D
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Mike O
> Sent: Monday, January 16, 2006 9:39 AM
> To: Joseph Eleazar; ccielab@groupstudy.com
> Subject: Re: OT-switch MAC addresses
>
> Joe,
>
> As soon as I plug in the modem, it records the 2950's switchport MAC
> address. If I use a cheapy linksys switch it doesn;t. Is there anyway to
>
> disable the switchport MAC?
> ----- Original Message -----
> From: "Joseph Eleazar" <joseph_eleazar@hotmail.com>
> To: <mikeeo@email.msn.com>; <ccielab@groupstudy.com>
> Sent: Sunday, January 15, 2006 11:35 PM
> Subject: RE: OT-switch MAC addresses
>
> > Mike,
> >
> > Assuming that all ports on the 2950 and 3550 are on the same vlan, use
> >
> > vlan 1 for simplicity, then:
> >
> > 1. Make sure that the interface vlan 1 on both switches are not set up
>
> for
>
> > dhcp.
> > 2. Make sure that the trunk between the switches are passing vlan 1.
> > 3. Make sure that the ethernet port on the 2620 that connects to the
> > switch is configured for dhcp.
> >
> > With that setup and the cable modem connected to the 2950, the the
>
> 2620 on
>
> > the 3550 should grab an IP address, that should leave 2 addresses for
>
> 2
>
> > more devices that connect to either switch to grab a dhcp address from
>
> the
>
> > cable modem.
> >
> > Joe
> >
> >>From: "Mike O" <mikeeo@email.msn.com>
> >>Reply-To: "Mike O" <mikeeo@email.msn.com>
> >>To: <ccielab@groupstudy.com>
> >>Subject: OT-switch MAC addresses
> >>Date: Sun, 15 Jan 2006 13:20:51 -0500
> >>
> >>My ISP (Comcast) assigns IP addresses per MAC. And my cable modem
>
> allows 3
>
> >>MAC addresses to be registered. My problem is I want my 2620 in my lab
>
> to
>
> >>be assigned an address but when I plug the cable modem into my 2950 it
> >>
> >>picks of the MAC of the switch port and doesn't let the 2620 register.
>
> Is
>
> >>there anyway to disable the mac address of the port?
> >>
> >>My 2620 is plugged into my 3550 which is trunked to the 2950 and VLAN
>
> is
>
> >>created to carry internet traffic to the cable modem, but like I said
>
> it
>
> >>picks up the switchport MAC instead.
> >>
> >>Thanks,
> >>
> >>Mike
> >>
> >>______________________________________________________________________
>
> _
>
> >>Subscription information may be found at:
> >>http://www.groupstudy.com/list/CCIELab.html
>
> _______________________________________________________________________
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> _______________________________________________________________________
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-- Ivan
This archive was generated by hypermail 2.1.4 : Wed Feb 01 2006 - 07:45:49 GMT-3