From: Mohamed (nmohamed@cisco.com)
Date: Tue Apr 20 2004 - 03:17:39 GMT-3
Hi,
I worked out in my switch,
First-eventhough if you have different areas,if you have is-type as L1L2
it will establish adjacencies.
Second,when you change one side to is-type 1,it looses adjacency bcoz
the border router should be L1L2 type,it is requirement.
Third,when you change the is-type to L1 ibn the interface level also you
loose the adjacency.
SFM#sh ip route isis
i L2 200.100.100.0/24 [115/20] via 25.25.25.26, FastEthernet3/6
SFM#
SFM#sh ip route isis
i L2 200.100.100.0/24 [115/20] via 25.25.25.26, FastEthernet3/6
SFM#
SFM#
SFM#
SFM#
SFM#
SFM#conf t
Enter configuration commands, one per line. End with CNTL/Z.
SFM(config)#int f3/6
SFM(config-if)#isis circuit-type level-1
SFM(config-if)#^Z
SFM#
SFM#
SFM#
SFM#
18:30:50: %SYS-5-CONFIG_I: Configured from console by console
SFM#
SFM#
SFM#sh ip route isis
SFM#sh ip route isis
SFM#sh ip route isis
SFM#sh ip route isis
SFM#
SFM#sh clns nei
SFM#
You see I lost that route,also no neighbor found.
Rgds
Mohamed.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Ahmed Mustafa
Sent: Tuesday, April 20, 2004 8:55 AM
To: ccielab@groupstudy.com
Subject: ISIS L1/L2 Adjancey
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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