A system comprising: a first optical line terminal, OLT, of a first passive optical network, PON, the first OLT configured to: receive user data from a baseband unit, BBU; and send the user data to a remote radio unit, RRU, via a first optical network unit, ONU of the first PON using a first wavelength; and a second OLT of a second PON, the second OLT configured to: obtain control and management, C&M, information; and the system being characterized by that: the second OLT is further configured to: share the C&M information with the first OLT; communicate with a second ONU and send the C&M information to the second ONU that is co-located with the first ONU using a second wavelength; wherein the second PON is deployed substantially parallel to the first PON; wherein the first OLT is co-located with the second OLT; the first OLT and the second OLT are communicatively coupled to each other; wherein the second ONU is configured to share the C&M information with the co-located first ONU; wherein the C&M information is generated by any of the BBU, the first OLT, the second OLT, the first ONU, or the second ONU; wherein the first OLT is configured to communicate with the first ONU via an optical distribution network, ODN, forming the first PON; the second OLT is configured to communicate with the second ONU via the same ODN, forming the second PON; and wherein the first PON and the second PON are part of an effecient common public radio interface, eCPRI. a first optical line terminal, OLT, of a first passive optical network, PON, the first OLT configured to: receive user data from a baseband unit, BBU; and send the user data to a remote radio unit, RRU, via a first optical network unit, ONU of the first PON using a first wavelength; and receive user data from a baseband unit, BBU; and send the user data to a remote radio unit, RRU, via a first optical network unit, ONU of the first PON using a first wavelength; and a second OLT of a second PON, the second OLT configured to: obtain control and management, C&M, information; and the system being characterized by that: the second OLT is further configured to: share the C&M information with the first OLT; communicate with a second ONU and send the C&M information to the second ONU that is co-located with the first ONU using a second wavelength; wherein the second PON is deployed substantially parallel to the first PON; wherein the first OLT is co-located with the second OLT; the first OLT and the second OLT are communicatively coupled to each other; wherein the second ONU is configured to share the C&M information with the co-located first ONU; wherein the C&M information is generated by any of the BBU, the first OLT, the second OLT, the first ONU, or the second ONU; wherein the first OLT is configured to communicate with the first ONU via an optical distribution network, ODN, forming the first PON; the second OLT is configured to communicate with the second ONU via the same ODN, forming the second PON; and wherein the first PON and the second PON are part of an effecient common public radio interface, eCPRI. share the C&M information with the first OLT; communicate with a second ONU and send the C&M information to the second ONU that is co-located with the first ONU using a second wavelength; wherein the second PON is deployed substantially parallel to the first PON; wherein the first OLT is co-located with the second OLT; the first OLT and the second OLT are communicatively coupled to each other; wherein the second ONU is configured to share the C&M information with the co-located first ONU; wherein the C&M information is generated by any of the BBU, the first OLT, the second OLT, the first ONU, or the second ONU; wherein the first OLT is configured to communicate with the first ONU via an optical distribution network, ODN, forming the first PON; the second OLT is configured to communicate with the second ONU via the same ODN, forming the second PON; and wherein the first PON and the second PON are part of an effecient common public radio interface, eCPRI.