My Note (EIGRP)

EIGRP Stub configuration need only be entered on spoke routers. The hub routers determined that they are talking to a stub router by examining the TLV (Type-Length-Value) in the HELLO packet.

EIGRP does the query action when a particular destination is lost and no feasible successor routes. A hub router will not send any QUERY packets to a stub router, because it knows that a stub router will only route packets for networks it has explicitly advertised.

Stub is an efficiency mechanism by placing restriction on queries. This can help against issue like SIA (Stuck in Active).

EIGRP stub only advertised connected network/subnet as well as summary route by defaults.

eigrp stub [ [receive-only] [connected] [static] [summary] [redistributed] ]

• Receive-only: router only accepts, but does not explicitly advertise, any routes. This option may not be used in combination with any other options.
• Connected: router advertises directly-connected networks
• Static: router advertises any configured static routes
• Summary: router advertises any configured summarized routes
• Redistributed: router advertises any routes learned from another protocol, such as OSPF

My Note (Windows Command Line)

To see which port number is listening on specific server ip address

netsh interface ipv4 show tcpconnection remoteaddress=10.1.1.1 rr=1

To see user information (such as password last set, password expires, etc...)

net user hanlinag /domain

NET USER
[username [password | *] [options]] [/DOMAIN]
         username {password | *} /ADD [options] [/DOMAIN]
         username [/DELETE] [/DOMAIN]
         username [/TIMES:{times | ALL}]