RE: need explanation and comment on IPV6

From: Daniel Kutchin (daniel@kutchin.com)
Date: Sat Nov 01 2008 - 16:14:21 ARST

When you assign link-local addresses manually, it makes it easy
for you to remember them when mapping for dynamic routing on
non-broadcast interfaces like frame-relay

R1:
S0/0
ipv6 address fe80::1 link-local
frame-relay map ipv fe80::2 102 broadcast

R2:
S0/0
ipv6 address fe80::2 link-local
frame-relay map ipv fe80::1 201 broadcast

So, yes. You have two options to generate link-local addresses

Automatically: ipv6 enable
Manually: ipv6 address fe80::1 link-local

By the way, you can also generate link-local addresses automatically by
assigning
Global addresses to the interfaces.

Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#ipv u
Router(config)#int e0/0
Router(config-if)#ipv add 2001:1:1::1/64
Router(config-if)#do sh ipv int brie
Ethernet0/0 [administratively down/down]
    FE80::203:6BFF:FEEC:B900
    2001:1:1::1
Router(config-if)#

Daniel

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
abdul muhammed
Sent: Samstag, 1. November 2008 06:51
To: Cisco certification
Subject: need explanation and comment on IPV6

Hi guys,

in ipv6 implentation, when will it be wise to use static address for
link local i.e
int fa0/0
ipv6 address fe80::1 link-local
or
int fa0/0
ipv6 enable <--- to self generate the link local address

and which is preferable during the lab

thanks 

-- 
Abdul Muhammed Murtala
American University of Nigeria
Lamido Zubairu way, Yola
Adamawa
+2348052001153, +2348056201237

Network Manager
MCSE,MCDBA,MCSA,OCPDBA,CCNA,CCIE Written.

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