Function
Description
Task
Created by VPN Manager for each context that has enabled
the RIP routing protocol (
router rip
Context Configuration
mode CLI command)
Routing Information
Protocol
rip
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.
Created by VPN Manager for each context.
L2 and L3 Switching
zebos
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 50: Network Processing Unit (NPU) Subsystem Tasks
Function
Description
Task
Created at StarOS start up.
Kernel-based NPU
Simulator
[VPC-DI, VPC-SI]
knpusim
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.
Provides recovery services to the NPU Controller.
ASR 5000 System Administration Guide, StarOS Release 21.1
380
StarOS Tasks
Network Processing Unit Subsystem
Summary of Contents for ASR 5000
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