RouterB(config)#interfaces 1RouterB(config-if)#ipadd (config-if)#noshutdown00:59:48: %LINK-3-UPDOWN: Interface Serial1, changed state to up00:59:48: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1, changed stateto up00:59:48: RT: add via , connected metric [0/0]00:59:48: RT: interface Serial1 added to routing tableRouterB(config-if)#endRouterB#undebugallAll possible debugging has been turned offRouterB#