IPv6 fat finger issue

I am really becoming frustrated with IPv6 as it relates to taking the lab
exam.
The single biggest issue I am facing is making mistakes by fat fingering the
IPv6 addresses.

I have no issue with understanding or configuring the technology, but when I
work on a timed scenario, I make a mistake typing the IPv6 address at some
point.
I am especially error prone when configuring auto tunnels where the IPv4
address is embedded in the IPv6 address.
Between the paper that I convert the decimal to hex and the router, the
address gets boogered.

Then, I'm looking at the config and debugs swearing at the monitor wasting
all kinds of time.

The debug ipv6 packet will show "unroutable address" if the misconfigured
IPv6 address is unroutable, but when there is a ::/ present it magnifies the
problem.

I really would like some type of strategy that I can use in the lab to
eliminate this type of time drain because of a typo.

The scenario i am working on basically uses all ipv6to4 autotunnels with BGP
redistributing IGP routes across the 6to4 tunnels.
The address space is intentionally segmented to make mistakes easy because
static routes are not allowed which means subnetting must be correct to
enable IPv6 BGP peering over the tunnels.

Address like this:
2002:AA4:8BA4::3/46
2002:4A4:8BA4::3/46
2002:A4A:8BA4::3/46

Sadistic when looking at it on SecureCRT....is that AA4 or 4A4 or A4A B8 or
8B?

Any help or strategy is appreciated,

Chris

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Received on Tue Aug 31 2010 - 17:08:45 ART