RE: IPV6 far end address

From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Thu Aug 31 2006 - 19:59:17 ART


        It depends if the link-local host address is the same as the
global unicast/site-local host address. For Ethernet you can "debug
ipv6 packets" and send an all-hosts multicast (equivalent to IPv4
255.255.255.255) like the following:

R2#show ipv6 int brief
FastEthernet0/0 [up/up]
    FE80::204:27FF:FEB5:2F60
    2001::204:27FF:FEB5:2F60

R2#debug ipv6 packet
IPv6 unicast packet debugging is on
R2#ping ff02::1
Output Interface: fastethernet0/0
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FF02::1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/4/8 ms
R2#
IPv6: SAS picked source FE80::204:27FF:FEB5:2F60 for FF02::1
(FastEthernet0/0)
IPV6: source FE80::204:27FF:FEB5:2F60 (local)
      dest FF02::1 (FastEthernet0/0)
      traffic class 0, flow 0x0, len 100+0, prot 58, hops 64,
originating
IPv6: Sending on FastEthernet0/0
IPV6: source FE80::230:94FF:FE7E:E581 (FastEthernet0/0)
!
! Remote device's link local address
!
      dest FE80::204:27FF:FEB5:2F60
      traffic class 0, flow 0x0, len 100+14, prot 58, hops 64, forward
to ulp

        The same is true for NBMA interfaces. Just "debug ipv6 packet"
and you can see if the remote device is sending you traffic from their
link-local address.

HTH,

Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com

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> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> CharlesB
> Sent: Thursday, August 31, 2006 5:25 PM
> To: ccielab@groupstudy.com
> Subject: IPV6 far end address
>
> Group,
>
> How can we obtain far end IPV6 address?
> If the media is Ethernet and Frame relay.
> For example for frame relay, if the task does not give us the link
local
> address for the far end?
> For Ethernet, I am just trying to figure out how we can use the IPV6
> tools.
>
>



This archive was generated by hypermail 2.1.4 : Fri Sep 01 2006 - 15:41:59 ART