  By using an elegant response function theory, which does not require matching
of the messy boundary conditions, we investigate the surface plasmon
excitations in the multicoaxial cylindrical cables made up of negative-index
metamaterials. The multicoaxial cables with {\em dispersive} metamaterial
components exhibit rather richer (and complex) plasmon spectrum with each
interface supporting two modes: one TM and the other TE for (the integer order
of the Bessel function) $m \ne 0$. The cables with {\em nondispersive}
metamaterial components bear a different tale: they do not support
simultaneously both TM and TE modes over the whole range of propagation vector.
The computed local and total density of states enable us to substantiate
spatial positions of the modes in the spectrum. Such quasi-one dimensional
systems as studied here should prove to be the milestones of the emerging
optoelectronics and telecommunications systems.
