D-Link DGS-3630-52PC Emulator 1 - Page 998

DGS-3630 Layer 3 Stackable Managed Switch CLI Reference Guide Command Mode Interface Configuration Mode. LDP Configuration Mode. Command Default Level Level: 12. Usage Guideline If the mode is configured as the downstream-on-demand mode, the downstream LSR advertises a label mapping when an upstream connection makes an explicit request. If the mode is configured as the downstream-unsolicited mode, the downstream LSR advertises a label mapping when a label is learned in the routing table. If the command is not configured for an interface, the global setting takes effect. If it is configured for an interface, the interface setting takes effect. Example This example shows how to configure the label distribution mode to the downstream-unsolicited mode. Switch# configure terminal Switch(config)# mpls ldp configuration Switch(config-ldp)# distribution-mode du Warning: The configuring will lead to LDP sessions restart. Switch(config-ldp)# 78-10 explicit-null This command is used to advertise the explicit null label to the penultimate hop. Use the no form of this command to revert to the default setting. explicit-null no explicit-null Parameters None. Default By default, this option is implicit null. Command Mode LDP Configuration Mode. Command Default Level Level: 12. Usage Guideline Use this command on the egress router to configure the Penultimate Hop Popping (PHP) behavior of the upstream router. If the egress router advertises the implicit null label, the upstream router will do Penultimate Hop Popping. If the egress router advertises the explicit null label, the upstream router will keep the outer label without popping. 993