Cisco Headend System Release 2.5 User Guide

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Server Management, Continued 

The TSBroadcaster server can pass through a number of states. 

 

Standby 

If the server does not have a role, it is in this state. It enters this 

state if it starts without a role, or if its role has been dropped. 

The server has not read its model from disk, and so the model 

can be replaced by a different one in this state. If the server 

cannot read its model from disk, it clears its role and enters this 

state. When given a role, the server enters the 

CheckingActivePartner state. 

Checking Active 

Partner 

If the server has just started or has just been given a role, it 

transiently enters this state to see if it has an active partner. If it 

has not, it enters the Active state; if it has, it enters the 

Shadowing state and requests a copy of the partner server’s 

model. 

Active 

If the server has a role and a valid model and does not have an 

active partner, it enters this state. In this state, it has loaded its 

model into memory and is now actively building, updating, 

and sending out Transport Stream data. If any commands 

change its model, it sends a copy of that model to its partner 

server. 

Failed 

If the server was Active but cannot build or send out data, it 

enters this state. In this state, it continues to attempt to build, 

update, and send out Transport Stream data; and if it succeeds, 

it will become Active again. If the server is paired up with 

another server, this server will enter the Shadowing state and 

the other server will become Active.  

Shadowing 

If the server has a role and a valid model and an Active 

partner, it is in this state. In this state it has loaded its model 

into memory and will update the model to reflect the state of 

its partner. If it detects that its partner has disappeared or 

entered the Failed state, it will become Active. 

Suspended 

If the server enters this state, it loads its model but does not 

actively build, update, or send out Transport Stream data.