Cisco Cisco Packet Data Interworking Function (PDIF)
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
Path First
Created by VPN Manager for each context that has enabled the OSPFv3 routing protocol (router
ospfv3 Context Configuration mode CLI command)
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
Information
Protocol
Created by VPN Manager for each context that has enabled the RIP routing protocol (router rip
Context Configuration mode CLI command)
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
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]
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.
tasks.