HP 5500 Ei 5500 Si Switch Series Configuration Guide

 282 
Step Command Remarks 
5.  Enable an OSPFv3 process on 
the interface.  ospfv3 
process-id  area area-id  
[  instance  instance-id  ]  Not enabled by default. 
 
Configuring OSPFv3 area parameters 
The stub area and virtual link features of OSPFv3 are the same as OSPFv2. 
Splitting an OSPFv3 AS into multiple areas re
duces the number of LSAs and extends OSPFv3 
applications. For those non-backbone areas residing on the AS boundary, configure them as stub areas 
to further reduce the size of routing...

 283 
Configuring an OSPFv3 virtual link 
You can configure a virtual link to maintain connectivity between a non-backbone area and the 
backbone, or in the backbone itself.  
 
 IMPORTANT: 
•
  Both ends of a virtual link are ABRs that must be configured with the  vlink-peer command. 
•   Do not configure virtual links in the areas of a GR-capable process. 
 
To configure a virtual link:  
Step Command 
1.  Enter system view. 
system-view 
2.  Enter OSPFv3 view.  
ospfv3 [ process-id  ]
 
3.   Enter...

 284 
Step Command Remarks 
2.  Enter interface view.  interface
 interface-type 
interface-number   N/A 
3.
  Configure a network type for 
the OSPFv3 interface.  ospfv3 network-type {
 broadcast | 
nbma  | p2mp  [ non-broadcast  ] | 
p2p  } [ instance  instance-id  ]  Optional. 
The network type of an interface 
depends on the media type of the 
interface.
 
 
Configuring an NBMA or P2MP neighbor 
For NBMA and P2MP interfaces (only when in unicast  mode), specify the link-local IP addresses of their...

 285 
Step Command Remarks 
4.  Configure a summary route.  abr-summary
 ipv6-address 
prefix-length [ not-advertise  ] Not configured by default. 
The 
abr-summary  command takes 
effect on ABRs only. 
 
Configuring OSPFv3 inbound route filtering 
According to some rules, you can configure OSPFv3 to filter routes that are computed from received 
LSAs. 
To configure OSPFv3 inbound route filtering: 
 
Step Command Remarks 
1.   Enter system view. 
system-view  N/A 
2.  Enter OSPFv3 view.  
ospfv3  [...

 286 
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter OSPFv3 view. 
ospfv3 [ process-id  ]  N/A  
3.  Configure a bandwidth 
reference value.  bandwidth-reference 
value
  Optional. 
100 Mbps by default.
 
 
Configuring the maximum number of OSPFv3 ECMP routes 
Perform this task to implement load sharing over ECMP routes.  
To configure the maximum number of ECMP routes: 
 
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter OSPFv3 view.  
ospfv3 [...

 287 
•  Using the filter-policy  export  command filters routes redistributed with the  import-route command. 
If the  import-route command is not configured, executing the filter-policy export command does 
not take effect. 
To configure OSPFv3 route redistribution: 
 
Step Command Remarks 
1.   Enter system view. 
system-view  N/A 
2.  Enter OSPFv3 view.  
ospfv3 [ process-id  ]
  N/A 
3.
  Specify a default cost for 
redistributed routes.  default cost
 value   Optional. 
1 by default. 
4....

 288 
Step Command Remarks 
2.  Enter interface view.  interface
 interface-type 
interface-number   N/A 
3.
  Configure the hello interval.  ospfv3 timer hello
 seconds 
[ instance  instance-id  ]   Optional. 
By default, the hello interval on 
P2P, broadcast interfaces is 10 
seconds. 
4.
  Specify the poll interval.  ospfv3 timer poll 
seconds 
[  instance  instance-id  ]  Optional. 
By default, the poll interval is 120 
seconds. 
5.
  Configure the dead interval.  ospfv3 timer dead
 seconds 
[...

 289 
Step Command Remarks 
3.  Configure a DR priority.  ospfv3 dr-priority
 priority  [ instance 
instance-id  ]   Optional. 
By default, the DR priority is 1. 
The DR priority of an interface 
determines the interface’s 
qualification in DR election. 
Interfaces having the priority 0 
cannot become a DR or BDR. 
 
Ignoring MTU check for DD packets 
When LSAs are few in DD packets, it is unnecessary to check the MTU in DD packets to improve 
efficiency. 
To ignore MTU check for DD packets: 
 
Step...

 290 
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter OSPFv3 view.  
ospfv3 [ process-id  ]
  N/A 
3.
  Enable the logging of 
neighbor state changes.  log-peer-change 
Enabled by default. 
 
Configuring OSPFv3 GR 
 
 IMPORTANT: 
You cannot confi
gure OSPFv3 GR after configuring OSPFv3 virtual links, because they are not supported
at the same time. 
 
Graceful Restart ensures the continuity of packet fo rwarding when a routing protocol restarts or a 
master/slave switchover...

 291 
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter OSPFv3 view.  
ospfv3  [ process-id  ]
  N/A 
3.
  Enable the GR Helper 
capability.  graceful-restart helper enable  Optional. 
Enabled by default. 
4.
  Enable strict LSA 
checking.  graceful-restart helper 
strict-lsa-checking  Optional. 
Disabled by default.  
 
Configuring BFD for OSPFv3 
Bidirectional forwarding detection (BFD) provides a mechanism to quickly detect the connectivity of links 
between OSPFv3 neighbors,...