GMPLS update - 7: adding custom GMPLS LSR management framework

Added #custom #GMPLS #LSR #management #framework in GMPLS module. This adds the #extended #GMPLS #attribute s to the LSR. The GMPLS #label #range s can be specified in different modes on different #interfaces ( #global / #interface-specific / #upstream-assigned). The #in-segment and #out-segment extended attributes like #top-label, #swap-label, etc ... can be specified. Also #cross-connect and #label-stack information as well cab be specified separately.

#GMPLS update 7 ...
[commit 483275c504e5496e450468b97b663fa9812646d3] (https://github.com/nes-repo/NES-Open-Switch/commit/483275c504e5496e450468b97b663fa9812646d3)