3com S7906E Manuel De Montage

 

1-30 

Follow these steps to add an interface into a mesh group and block an interface: 

Enter system view 

–– 

Enter interface view 

interface interface-type 
interface-number 

–– 

Add the interface to a mesh 
group 

isis mesh-group 
mesh-group-number 

Block the interface 

Required to choose either. 

By default, the interface neither 
belongs to any mesh group nor 
is blocked. 

 

The mesh group feature takes effect only on P2P interfaces. 

 

When the LSDB changes on a router, a route calculation starts. Frequent route calculations consume a 

lot of system resources, while route calculations at a proper interval improve efficiency. You can set an 

appropriate interval for SPF calculations as needed. 

Follow these steps to configure the SPF parameters: 

Enter system view 

–– 

Enter IS-IS view 

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

–– 

Configure the SPF 
calculation interval 

timer spf maximum-interval 
[ initial-interval [ second-wait-interval ] ] 

Optional 

The default SPF 
calculation interval is 10 
seconds.  

 

By setting the overload bit in sent LSPs, a router informs other routers of a failure that makes it 

incapable of routing and forwarding packets.  

When an IS-IS router cannot record the complete LSDP due to running out of memory or some other 

reasons, it will calculate wrong routes. To make troubleshooting easier in this case, you can temporarily 

isolate the router from the IS-IS network by setting the overload bit. 

Follow these steps to set the LSDB overload bit: 

Enter system view 

–– 

Enter IS-IS view 

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

––