Cisco Cisco IOS Software Release 12.0(13)S7

The following example shows how to configure an LDP MD5 password for LDP sessions for a specified 
neighbor:

enable

configure terminal

mpls ldp vrf vpn1 10.1.1.1 password nbrscrtpwd

end

This sets up nbrscrtpwd as the password to use for LDP sessions for the neighbor whose LDP router ID 
is 10.1.1.1. Communication with this neighbor is through VRF vpn1.

The following example shows how to configure an LDP MD5 password for LDP sessions with peers 
from a specified VRF. The password vrfpwdvpn1 is configured for use with LDP peers that communicate 
using VRF vpn1. A password is required; otherwise, LDP tears down the session.

enable

configure terminal

mpls ldp vrf vpn1 password fallback vrfpwdvpn1

mpls ldp vrf vpn1 password required

end

The following example shows how to configure a password that is used for sessions for peers that 
communicate using the global routing table:

enable

configure terminal

mpls ldp password fallback vrfpwdvppn1

end

The following example shows how to configure an LDP MD5 password for LDP sessions with a selected 
group of peers. The required password aclpwdfor10 is configured for access list 10. Only those LDP 
router IDs permitted in access list 10 are required to use the password. 

enable

configure terminal

mpls ldp password option 25 for 10 aclpwdfor10

mpls ldp password required for 10

end

Access list 10 might look something like this:

enable

configure terminal

access-list 10 permit 10.1.1.1

access-list 10 permit 10.3.3.3

access-list 10 permit 10.4.4.4

access-list 10 permit 10.1.1.1

access-list 10 permit 10.2.2.2

end