Cisco Cisco Packet Data Gateway (PDG)

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  StarOS Tasks 
Subsystem Tasks  ▀   
 
VPC-VSM System Administration Guide, StarOS Release 19  ▄  
 
   
311 
Task
 
Description
 
Function
 
Performs SPF calculations.
 
Applies any defined OSPF routing policy
 
ospfv3
 
Open Shortest 
Path First 
 
Created by VPN Manager for each context that has enabled the OSPFv3 routing protocol (router 
ospfv3
 Context Configuration mode CLI command)
 
Responsible for learning and redistributing routing information via the OSPFv3 protocol.
 
Maintains the OSPFv3 neighboring relationship.
 
Maintains the LSA database.
 
Performs OSPFv3 SPF calculations.
 
Applies any defined OSPFv3 routing policy.
 
rip
 
Routing 
Information 
Protocol
 
Created by VPN Manager for each context that has enabled the RIP routing protocol (router rip 
Context Configuration mode CLI command)
 
Responsible for learning and redistributing routing information via the RIP protocol. 
 
Maintains the RIP database.
 
Sends periodic RIP update messages.
 
Applies any defined RIP routing policy.
 
zebos 
 
L2 and L3 
Switching
 
Created by VPN Manager for each context.
 
Maintains the routing table (RIB and FIB) for the context.
 
Performs static routing.
 
Interfaces to the kernel for routing & interface updates.
 
Redistributes routing information to dynamic routing protocols.
 
Calculates nexthop reachability.
 
 
Network Processing Unit Subsystem 
Table 18. 
Network Processing Unit (NPU) Subsystem Tasks 
Task
 
Description
 
Function
 
knpusim
 
Kernel-based NPU 
Simulator 
[VPC-DI, VPC-SI] 
Created at StarOS start up.
 
Provides port configuration services to the CSP task.
 
Provides interface binding and forwarding services to the VPN Manager.
 
Provides flow insertion and removal services to Session Manager and AAA Manager 
tasks.