HP 5500 Ei 5500 Si Switch Series Configuration Guide

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prune timer state of all the routers on the path. A multi-access subnet can have the state-refresh capability 
only if the state-refresh capability is enabled on all IPv6 PIM routers on the subnet. 
To enable the state-refresh capability:  
 
Step  Command  Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter interface view.  interface 
interface-type 
interface-number   N/A 
3.
  Enable the state-refresh 
capability.   pim ipv6 state-refresh-capable  Optional. 
Enabled by default....

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configurable interval (namely, graft retry period) until it receives a graft-ack message from the upstream 
router.  
To configure the IPv6 PIM-DM graft retry period:  
 
Step Command  Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter interface view.  interface 
interface-type 
interface-number   N/A 
3.
  Configure the graft retry 
period.   pim ipv6 timer graft-retry 
interval Optional. 
3 seconds by default.
 
 
For more information about the configuration of other timers in IPv6...

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•  Enable IPv6 forwarding and configure an IPv6 unic ast routing protocol so that all devices in the 
domain are interoperable at the network layer. 
•   Determine the IP address of a static RP and the ACL  rule defining the range of IPv6 multicast groups 
to be served by the static RP. 
•   Determine the C-RP priority and the ACL rule defi ning the range of IPv6 multicast groups to be 
served by each C-RP. 
•   Determine the legal C-RP address range and the ACL rule defining the range of IPv6...

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method for the dynamic RP election mechanism to enhance the robustness and operation manageability 
of a multicast network. 
 
 IMPORTANT: 
In an IPv6 PIM network, if both IPv6 PIM-SM
 and IPv6 BIDIR-PIM are enabled, do not confi
gure the same
RP to serve IPv6 PIM-SM and IPv6 BIDIR-PIM simultan eously to avoid IPv6 PIM routing table errors.  
 
Configuring a static RP 
If only one dynamic RP exists in a network, manually configuring a static RP can avoid communication 
interruption because of...

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Step Command  Remarks 
3.  Configure an interface to be a 
C-RP for IPv6 PIM-SM.  c-rp 
ipv6-address  [ {  group-policy  
acl6-number  | scope  scope-id  } | priority  
priority  | holdtime  hold-interval  | 
advertisement-interval  adv-interval ] *   No C-RPs are configured by 
default.
 
4.  Configure a legal C-RP 
address range and the range 
of IPv6 multicast groups to be 
served.   crp-policy 
acl6-number   Optional. 
No restrictions by default.
 
 
Enabling embedded RP 
With the embedded RP...

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Step Command  Remarks 
3.  Configure the C-RP-Adv 
interval.   c-rp
 advertisement-interval  interval Optional. 
60 seconds by default.
 
4.  Configure C-RP timeout time.  
c-rp  holdtime  interval
  Optional. 
150 seconds by default.
 
 
For more information about the configuratio n of other timers in IPv6 PIM-SM, see Configuring IPv6 PIM 
common timer
s .  
Configuring a BSR 
Configuration guidelines 
Before you configure a BSR, make sure that you are familiar with BSR election process, BSR legal...

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all routers in the entire network, all these routers will discard bootstrap messages from out of the 
legal address range.  
These preventive measures can partially protect the  security of BSRs in a network. However, if an 
attacker controls a legal BSR, the problem will still occur. 
Because a large amount of information needs to be exchanged between a BSR and the other 
devices in the IPv6 PIM-SM doma in, a relatively large bandwidth should be provided between the 
C-BSR and the other devices in...

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{ If the RP-set information of one group range is carried in multiple BSMFs, a non-BSR router 
updates corresponding RP-set information after receiving all these BSMFs.  
Because the RP-set information contained in each segment is different, loss of some IP fragments 
will not result in dropping  of the entire message.  
The function of BSM semantic fragmentation is en abled by default. Devices not supporting this 
function might deem a fragment as an entire mess age and learn only part of the...

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Step Command  Remarks 
4.  Configure the C-BSR priority.  
c-bsr priority  priority  Optional. 
64 by default. 
 
 
Configuring C-BSR timers 
Perform the following configuration on C-BSR routers. 
To  c o n fig u re  C - BS R  t i me rs : 
 
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter IPv6 PIM view. 
pim ipv6  N/A 
3.
  Configure the BS 
period.  c-bsr interval interval
 Optional. 
For the default value, see the note after this table.
 
4.
  Configure the BS 
timeout...

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Step Command Remarks 
3.  Enable IPv6 administrative 
scoping.   c-bsr admin-scope 
Disabled by default 
 
Configuring an IPv6 admin-scope zone boundary 
The boundary of each IPv6 admin-scope zone is fo rmed by ZBRs. Each admin-scope zone maintains a 
BSR, which serves multicast groups with a specific Scope field in their group addresses. Multicast 
protocol packets (such as assert messages and bootstrap messages) that belong to this range cannot 
cross the admin-scope zone boundary.   
Perform the...