Certification > Juniper > JNCIE

Page 232

Para 3, revision. .
Keep in mind that a RSVP LSP with LDP tunneling support in the r7 to r1 direction is not technically needed for successful LDP session establishment between routers r1 and r7. This is because the extended neighbor discovery and session establishment messages generated by r1 are addressed to the remote LDP neighbor, and as such, are simply routed as unicast IP by the intervening routers. Note that even though an LDP session can be established without configureing r7 with LDP tunneling support, LDP forwarding will only be possible in the r1-to-r7 direction if bi-directional LDP tunneling is not configured. Although not shown, r7's configuration has been modified to also support LDP tunneling to enable bi-directional LDP forwarding.