From: tom cheung (tkc9789@xxxxxxxxxxx)
Date: Mon Aug 20 2001 - 12:01:14 GMT-3
But the least significant bit of the first octet is set to "1" which
indicates that this is NOT a unicast.
>From: "BRZYSKI, ADAM E (SWBT)" <ab1723@sbc.com>
>Reply-To: "BRZYSKI, ADAM E (SWBT)" <ab1723@sbc.com>
>To: Bob Chahal <bob.chahal@ntlworld.com>, "Daniel C. Young"
><danyoung99@mediaone.net>, "'Chuck Church'" <cchurch@MAGNACOM.com>,
>ccielab@groupstudy.com
>Subject: RE: ipx routing 1111.1111.1111
>Date: Mon, 20 Aug 2001 09:33:38 -0500
>
>I though that the range of mac's reserved for multicasts falls in the
>following range:
>
>01:00:5e:00:00:00 - 01:00:5e:7f:ff:ff
>
>that would not explain why 1111.1111.1111 would not work on a loopback
>interface.
>
>Adam Brzyski
>Design Engineer II
>CCNP, CCDP, NNCDE
>
>
>-----Original Message-----
>From: Bob Chahal [mailto:bob.chahal@ntlworld.com]
>Sent: Monday, August 20, 2001 3:54 AM
>To: Daniel C. Young; 'Chuck Church'; ccielab@groupstudy.com
>Subject: Re: ipx routing 1111.1111.1111
>
>
>Chuck, thanks for the reminder. I keep forgetting about this.
>
>Daniel, in a lab scenario you are very likely to be asked to configure an
>IPX network on a loopback.
>
>Thanks for the replies.
>
>Bob
>----- Original Message -----
>From: "Daniel C. Young" <danyoung99@mediaone.net>
>To: "'Chuck Church'" <cchurch@MAGNACOM.com>; "'Bob Chahal'"
><bob.chahal@ntlworld.com>; <ccielab@groupstudy.com>
>Sent: Monday, August 20, 2001 5:26 AM
>Subject: RE: ipx routing 1111.1111.1111
>
>
> > Also Bob,
> >
> > With IPX, you don't need to worry about putting networks on loopbacks.
>Think
> > about it, IPX is a desktop protocol for connecting LANs. I've never had
>a
> > problem with using the 'ipx routing 1.1.1' convention.
> >
> > Regards,
> > Daniel
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> > Chuck Church
> > Sent: Sunday, 19 August 2001 4:01 PM
> > To: 'Bob Chahal'; 'ccielab@groupstudy.com'
> > Subject: RE: ipx routing 1111.1111.1111
> >
> >
> > Bob,
> >
> > You're defining a multicast address. This is from
> > http://www.cisco.com/warp/customer/473/85.shtml#multicast :
> >
> > Note: Recall that the least significant bit of the most significant
>octet
>of
> > an Ethernet or FDDI MAC address is the "group bit." If the bit is set
>(1),
> > the MAC address is a
> > multicast (or broadcast). If the bit is not set (0), the MAC address is
>a
> > unicast. The MAC address 0900.3333.4444 has the group bit set, and is
> > therefore a multicast
> > MAC (09 hex = 00001001; the last bit, the group bit, is set).
> >
> > Chuck
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> > Bob Chahal
> > Sent: Sunday, August 19, 2001 5:16 PM
> > To: ccielab@groupstudy.com
> > Subject: ipx routing 1111.1111.1111
> >
> >
> > When I configure a router with
> >
> > ipx routing 1111.1111.1111
> >
> > and then configure a loopback
> >
> > int lo0
> > ipx netw 10
> >
> > if I do a show ipx int lo0 the ipx address is 10.1111.1111.1111
> >
> > if I then ping this address from the same router (i.e the router on
>which
> > this is configured) my pings timeout.
> >
> > If I do not configure an address with the ipx routing command the ipx
>add
>of
> > the lo0
> > uses tha mac address of the ethernet interface on the router and when I
>now
> > ping the lo0 it works
> >
> > p 10.0010.7bfe.6cc1
> > Translating "10.0010.7bfe.6cc1"
> >
> > Type escape sequence to abort.
> > Sending 5, 100-byte IPX cisco Echoes to 10.0010.7bfe.6cc1, timeout is 2
> > seconds:
> >
> > !!!!!
> > Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
> >
> >
> > Can anyone explain why this happens. I was thinking of configuring my
>ipx
> > routers like the first method above as it makes configuring frame-relay
> > maps easier to configure and troubleshoot but the side-effect is what I
>just
> > described.
> >
> > Thanks
> >
> > Bob
> > **Please read:http://www.groupstudy.com/list/posting.html
> > **Please read:http://www.groupstudy.com/list/posting.html
> > **Please read:http://www.groupstudy.com/list/posting.html
>**Please read:http://www.groupstudy.com/list/posting.html
>**Please read:http://www.groupstudy.com/list/posting.html
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