為了選擇要啟用了Tag交換的目的地前綴和路徑，輸入下面例子中所列命令來配置路由器即可。假如你這樣配置R2，R5和R8，使得它們不把標簽分配到其它路由器，就可以保證任何路由器都不向它們發送加上標簽的數據包。你還需要這樣配置路由器R1，R3，R4，R6和R7，使得它們只為網絡A分配標簽，而且只分配到可用的鄰接路由器中。這種配置可保證：R3將它的針對網絡A標簽只分配到R1，而R4只分配到R3，R6只分配到R4，R7只分配到R6
（參見圖10-l）。
router-2 （config）# no tag- switching advertise-tags
router-5 （config）# no tag-switching advertise-tags
router-8 （config）# no tag- switching advertise-tags
router-1 （config）# access-list permit R1
router-1 （config）# no tag-switching advertise-tags for 1
router-1 （config）# tag-switching advertise-tags for 1 to 2
router-1 （config）# exit

router-3# access-list 1 permit A
router-3# access-list 2 permit R1
router-3# tag-switching advertise-tags for 1 to 2
router-3# exit

router-4# access-list 1 permit A
router-4# access-list 2 permit R3
router-4# tag-switching advertise-tags for 1 to 2
router-4# exit
router-6# access-list 1 permit A
router-6# access-list 2 permit R4
router-6# tag-switching advertise-tags for 1 to 2
router-6# exit

router-7# access-list 1 permit A
router-7# access-list 2 permit R6
router-7# tag-switching advertise-tags for 1 to 2
router-7# exit