From: Ahmed Mustafa (ahmed.mustafa@sbcglobal.net)
Date: Fri Apr 23 2004 - 04:53:05 GMT-3
Passive intereface in ISIS means actually means that advertise the network
internally without sending any hello packets.
I am wondering if Passive interfaces can only be assigned for stub networks or
loopback networks.
The thing I tested was little wiered.
I connected my routers such as:
R2-----------------------------------R1----------------------------
--R3
R1 and R2 are connected via S0 at both ends, and R1 and R3 are connected via
S1 at both ends.
I tried this configuration:
On R1,
I tried this:
First I didn't enable "IP ROUTER ISIS" on R1's either S0 or S1,
router isis
net 49.0010.0001.0001.0001.00
passive interface s0------------------------> router didn't like, and gave
the error message something 'INVALID COMMAND IF CLNS ONLY".
I then enabled the command "IP ROUTER ISIS" on S1 only.
I tried again to above configuration
router isis
net 49.0010.0001.0001.0001.00
passive interface s0------------------------> command was accepted.
I concluded that in order to advertise networks through passive interfaces one
of the router's interfaces must be enabled with 'IP ROUTER ISIS"
But again, passive interface will not work on the link between two routers.
It is only meant for stub networks.
Regards,
Ahmed
This archive was generated by hypermail 2.1.4 : Mon May 03 2004 - 19:48:53 GMT-3