3com S7906E Guide De Référence

 

1-29 

Use the hops-count command to set the maximum hop count for loop detection. 

Use the undo hops-count command to restore the default. 

By default, the maximum hop count for loop detection is 32. 

Note that: 

z 

You need to configure this command before enabling LDP on any interface. 

z 

The maximum hop count dictates how fast LDP detects a loop. Adjust this argument as required. 

Related commands: loop-detect, path-vectors. 

# Set the maximum hop count for loop detection to 25 for the public network LDP instance. 

<Sysname> system-view 

[Sysname] mpls ldp 

[Sysname-mpls-ldp] hops-count 25 

# Set the maximum hop count for loop detection to 25 for LDP instance vpn1. 

<Sysname> system-view 

[Sysname] mpls ldp vpn-instance vpn1 

[Sysname-mpls-ldp-vpn-instance-vpn1] hops-count 25 

label advertise { explicit-null | implicit-null | non-null } 

MPLS view 

2: System level 

explicit-null: Specifies that the egress supports PHP and distributes to the penultimate hop an explicit 

null label, whose value is 0. 

implicit-null: Specifies that the egress supports PHP and distributes to the penultimate hop an implicit 

null label, whose value is 3. 

non-null: Specifies that the egress does not support PHP and distributes to the penultimate hop a 

normal label, whose value is not less than 1024. 

Use the label advertise command to specify whether the egress should support PHP and what type of 

label the egress should distribute to the penultimate hop.  

Use the undo label advertise command to restore the default.