3Com S7902E, Руководство по настройке

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Disabling an Interface from Sending/Receiving IS-IS Packets
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:
To do… Use the command… Remarks
Enter system view system-view ––
Enter interface view
interface interface-type
interface-number
––
Disable the interface from
sending and receiving IS-IS
packets
isis silent
Required
Not disabled by default
Enabling an Interface to Send Small Hello Packets
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:
To do… Use the command… Remarks
Enter system view system-view ––
Enter interface view
interface interface-type
interface-number
––
Enable the interface to send
small hello packets without
CLVs
isis small-hello
Required
Standard hello packets are sent
by default.
Configuring LSP Parameters
Configuring LSP timers
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:
To do… Use the command… Remarks
Enter system view system-view ––
Enter IS-IS view
isis [ process-id ]
[ vpn-instance
vpn-instance-name ]
––