--> There are basically three operations done by LDP enabled Router
i) Push
--> Inserting Label to an IP Packet.
--> Done by Ingress LSR ( Near to Source).
--> Done by using FIB table if there is only one label to push and by LFIB if there is more than one label.
ii) SWAP
--> Changing the Label.
--> Done by Intermediate LSR.
--> Done by using LFIB table only.
iii) POP
--> Removing the Label.
--> Done by Egress LSR ( Near to Destination).
--> Done by using LFIB table only.
Note: If a router receives the unknown label as incoming packet then it drops similar to IP Routing.
Md.Kareem
CCIE # 54759
i) Push
--> Inserting Label to an IP Packet.
--> Done by Ingress LSR ( Near to Source).
--> Done by using FIB table if there is only one label to push and by LFIB if there is more than one label.
ii) SWAP
--> Changing the Label.
--> Done by Intermediate LSR.
--> Done by using LFIB table only.
iii) POP
--> Removing the Label.
--> Done by Egress LSR ( Near to Destination).
--> Done by using LFIB table only.
Note: If a router receives the unknown label as incoming packet then it drops similar to IP Routing.
Md.Kareem
CCIE # 54759
0 comments:
Post a Comment