Personally I think this is not true, I think someone is spreading
something with no real data to back it up.
Their are physical issues on why some 10bT interfaces on cisco routers can
not handle VLAN's. So I doubt secondary addressing will go away just like
that. VLANs and secondary addressing each have their place.
Brian
On Tue, 20 Feb 2001, Nabil Fares wrote:
> You're not dreaming! Someone replied to my post last week, he/she advised
> that Cisco will at point stop supporting secondary interfaces.
>
> Nabil
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> Bob Vance
> Sent: Tuesday, February 20, 2001 1:21 PM
> To: CISCO_GroupStudy List (E-mail)
> Subject: RE: Creating Multiple Interfaces on an Ethernet Port
>
>
> I would swear that I read that "secondary" was eventually going away
> and the sub-interfaces would replace it.
>
> Am I dreaming?
>
> -------------------------------------------------
> Tks | <mailto:[EMAIL PROTECTED]>
> BV | <mailto:[EMAIL PROTECTED]>
> Sr. Technical Consultant, SBM, A Gates/Arrow Co.
> Vox 770-623-3430 11455 Lakefield Dr.
> Fax 770-623-3429 Duluth, GA 30097-1511
> =================================================
>
>
>
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> Priscilla Oppenheimer
> Sent: Monday, February 19, 2001 10:33 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Creating Multiple Interfaces on an Ethernet Port
>
>
> At 04:47 PM 2/19/01, Chris Wornell wrote:
> >Hello,
> >
> >I've found out you can't create multiple interfaces on an ethernet port
> >apparently. I was wondering why this is exactly? I know you can
> accomplish
> >the same on serial lines using pvc's but it seems odd you can't do it
> on
> >ethernet.
>
> Why do you want to create multiple interfaces on your Ethernet port?
> Ethernet was designed as a connectionless, packet-switched shared
> network.
> Serial links, on the other hand, are more often used for
> connection-oriented virtual circuits. Subinterfaces let you associate a
> single physical link with multiple virtual circuits.
>
> > I know there are ethernet only networks and the ip secondary
> >command doesn't seem right compared to creating a new interface.
>
> Sure there are Ethernet-only networks. Each physical Ethernet port on a
> router is usually associated with an IP subnet. If you happen to have
> two
> IP subnets on the LAN to which a physical port is attached, you could
> use a
> secondary IP address as a workaround to this problem. Traffic between
> subnets would still go through the router usually.
>
> If you're using your Ethernet port as a "trunk port," and you use ISL or
> 802.1q VLAN encapsulation, then you can configure subinterfaces. In this
> case, subinterfaces let you associate a single physical link with
> multiple
> VLANs. Inter-Switch Link (ISL) and IEEE 802.1q maintain VLAN
> identification
> information as traffic travels between connected switches.
>
> Maybe you can give us a better idea of what you are trying to accomplish
> and we can provide more tailored information, but I hope this info was
> somewhat useful.
>
> Priscilla
>
>
>
> >Chris Wornell
> >Technical Support
> >MM Internet http://mminternet.com
> >888-654-4971
> >CCNA, CCDA, CSE
> >
> >_________________________________
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>
>
> ________________________
>
> Priscilla Oppenheimer
> http://www.priscilla.com
>
> _________________________________
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Network Administrator
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