Cisco Cisco Tunnel Terminating Gateway (TTG)

 

 

 

 

Daemon

 

 Listens for requests from connecting clients, such as FTP, SFTP, and telnet. When a TCP 
packet or UDP packet arrives with a particular destination port number, inetd launches the 
appropriate server program to handle the connection.

 

ipsecctrl

 

IPSec Controller 

 

Started by SIT on system startup regardless of configuration.

 

Starts ipsecmgr tasks based on configuration and maintains its list for task recovery.

 

Receives and maintains user configuration for IPSec.

 

Manages the configured IPSec crypto maps and its assignment to ipsecmgrs.

 

Interfaces with the vpnmgr task for required IPSec configuration parameters such as IP 
Access Lists, IP pools, interface addresses, and interface state notifications.

 

ipsecmgr

 

IPSec Manager 

 

Created by the Session Controller, establishes and manages secure IKEv1, IKEv2 and 
IPSec data tunnels.

 

kvctrl

 

Key Value Controller

 

Central key value store (kvstore) function that runs on the management card. Its primary 
function is to support recovery and distribution functions.

 

lagmgr

 

Link Aggregation 
Group Manager 
[ASR 5x00 only] 

Started by npuctrl on the demux card's primary CPU (ASR 5000) or MIO (ASR 5500) with 
a facility level between CSP and npumgr to receive configuration/status notification from 
npumgr and build global LAG database.

 

Exchanges control packets (LACP and Marker) over configured physical ports with peers 
to reach agreement on an aggregation of links. 

 

msgd

 

Messenger Daemon 

 

Implements the Name Service and related functions for the internal message passing 
system. 

msgproxy

 

Message Proxy

 

The Messenger Proxy process handles broadcast messages send from any single application 
(referred to as a client) to any facility which has one instance per thread (referred to as the 
Target Facility). 

 

One msgproxy task runs on each CPU complex on the SMC (ASR 5000), DPCs (ASR 
5500) and SF Virtual Machine (VPC-DI).

 

Processes incoming broadcast messages from the Client processes, such as sessctrl, 
distributes them to the correct Target Facility, such as sessmgr, creates the correct 
responses and sends them back to the correct Client.

 

nscontrol

 

Name Service 
Controller 

 

As part of the Messenger process, provides a reliable channel for tasks to send control 
messages to the Messenger Daemon.

 

ntpd

 

Network Time 
Protocol (NTP) 
Daemon

 

 Maintains the system time in synchronization with time servers using NTP. Enabled when 
one or more NTP servers have been configured via the NTP Configuration mode ntp 
server CLI command. 

 

 rct

 

Recovery Control 
Task

 

Monitors tasks/managers/facilities across the system and performs recovery in the event of 
a failure.

 

sct

 

Shared Configuration 
Task

 

Performs the redundant storage of configuration information and other state information in 
an in-memory database.

 

 sft

 

Switch Fabric Task

 

Monitors the switch fabric and the gigabit Ethernet control plane.