ISIS L1/L2 Adjancey

From: Ahmed Mustafa (ahmed.mustafa@sbcglobal.net)
Date: Tue Apr 20 2004 - 00:24:34 GMT-3


IF I specically configure R1 and R2 to be as L1 only then

Are they required to be int the same area?

For example,

I have r1 connected to r2 both via Ethernet 0. Cisco routers by default are
L1/L2 routers. I then configure

r1

interface ethernet 0
ip router isis

net 49.001.0001.0001.0001.00

r2
interface ethernet 0
ip router isis

net 49.0002.0002.0002.0002.00

The adjaceny will be established since both routers at this point are L1/L2
regardless of different areas.

Now if I change the default settings from L1/L2 to L1 only by configuring

is-type Level-1

Will it still work with both routers in different area?

The last one

I don't change the whole default-type, but just change the interface only to
Level-1 by configuring

isis circuit-type level-1

All the help will be appreicated as I spent lot of time at CCO, but no
satisfactory answer.

Regards.

Teza



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