F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices Network Management Configuration Guide-6PW100

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Figure 278 Network diagram of a fully meshed network
To avoid this problem, you can add some interfaces to a mesh group or block some interfaces.
• An interface in a mesh group floods a received LSP only to interfaces not in the mesh group.
• A blocked interface sends LSPs only after receiving LSP requests.
Before you configure this task, you must consider redundancy for interfaces in case that LSP packets
cannot be flooded due to link failures.
To add an interface into a mesh group and block an interface:
Ste
p
Command Remarks
414. Enter system view. system-view N/A
415. Enter interface view.
interface interface-type
interface-number
N/A
416. Add the interface to a mesh
group or block the interface.
• Add the interface to a mesh
group:
isis mesh-group
mesh-group-number
• Block the interface:
isis mesh-group mesh-blocked
Use either approach.
By default, the interface neither
belongs to any mesh group nor is it
blocked.
The mesh group feature takes effect
only on P2P interfaces.
690BConfiguring SPF parameters
When the LSDB changes on a router, a route calculation starts. Frequent route calculations consume a lot
of system resources. You can set an appropriate interval for SPF calculations to improve efficiency.
To configure the SPF parameters:
Ste
p
Command Remarks
417. Enter system view.
system-view N/A
418. Enter IS-IS view.
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
N/A
419. Configure the SPF
calculation interval.
timer spf maximum-interval [ initial-interval
[ second-wait-interval ] ]
Optional.
The default SPF calculation
interval is 10 seconds.
Eth1/1
Eth1/2
Eth1/3
Eth1/1
Eth1/1
Eth1/2
Eth1/3
Eth1/1
Eth1/2
Eth1/3
Eth1/2
Eth1/3
Router A
Router B Router C
Router D