3com S7906E Instruccion De Instalación

 

1-26 

After disabled from sending and receiving hello packets, an interface cannot form any neighbor 

relationship, but can advertise directly connected networks in LSPs through other interfaces. By doing 

so, you can save bandwidth and CPU resources while ensuring other routers know networks directly 

connected to the interface.  

Follow these steps to disable an interface from sending and receiving IS-IS packets: 

Enter system view 

–– 

Enter interface view 

interface interface-type 
interface-number 

–– 

Disable the interface from 
sending and receiving IS-IS 
packets 

Required 

Not disabled by default 

 

IS-IS messages cannot be fragmented at the IP layer because they are directly encapsulated into 

frames. Therefore, any two IS-IS neighboring routers need to negotiate a common MTU. To avoid 

sending big hellos for saving bandwidth, you can enable the interface to send small hello packets 

without CLVs.  

Follow these steps to enable an interface to send small hello packets: 

Enter system view 

–– 

Enter interface view 

interface interface-type 
interface-number 

–– 

Enable the interface to send 
small hello packets without 
CLVs 

Required 

Standard hello packets are sent 
by default. 

 

1)  Specify the maximum age of LSPs 

Each LSP has an age that decreases in the LSDB. Any LSP with an age of 0 is deleted from the LSDB. 

You can adjust the age value based on the scale of a network. 

Follow these steps to specify the maximum age of LSPs: 

Enter system view 

–– 

Enter IS-IS view 

isis [ process-id ] 
[ vpn-instance 
vpn-instance-name ] 

––