LABEL RETENTION MODES
--> LABEL RETENTION Modes defines how LDP enabled router stores the labels in LIB.
--> LDP enabled router uses two modes to store the labels in LIB
i) Conservative Retention mode
--> IN this mode, only the label sent by the best next hop router is stored in LIB.
--> uses less memory.
--> Convergence is less in case of link failure as there is no backup label present in LIB.
--> Default Mode for ATM enabled interafces.
ii) Liberal Mode
--> IN this mode, the label sent by every router is stored in LIB and the best label is stored in LFIB.
--> uses more memory.
--> Convergence is quicker in case of link failure as there is a backup label present in LIB.
--> Default Mode is for Frame Mode enabled interfaces.
Md.Kareem
CCIE # 54759
--> LABEL RETENTION Modes defines how LDP enabled router stores the labels in LIB.
--> LDP enabled router uses two modes to store the labels in LIB
i) Conservative Retention mode
--> IN this mode, only the label sent by the best next hop router is stored in LIB.
--> uses less memory.
--> Convergence is less in case of link failure as there is no backup label present in LIB.
--> Default Mode for ATM enabled interafces.
ii) Liberal Mode
--> IN this mode, the label sent by every router is stored in LIB and the best label is stored in LFIB.
--> uses more memory.
--> Convergence is quicker in case of link failure as there is a backup label present in LIB.
--> Default Mode is for Frame Mode enabled interfaces.
Md.Kareem
CCIE # 54759
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