This specifies whether this pseudowire's setup is static(1) -- manually configured with labels and parameters entered by hand on both ends -- or dynamic(2) -- established automatically via LDP signaling between the two PE routers. This distinction determines the entire troubleshooting approach for the pseudowire: static PWs require matching manual configuration on both ends, while dynamic PWs rely on LDP session health and correct FEC advertisement. A pseudowire failing to come up when signalling type reads dynamic(2) points the admin toward checking the LDP session status rather than manually comparing label configuration on both routers.