Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) - Manual (Page 511)

Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide 487
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Flooding Layer 2 BPDUs with a VPLS instance
3
3 When both FDP/CDP is enabled globally.
Brocade(config-mpls-vpls-vpls1-vlan-100)#tag eth 4/3 eth 4/5 eth 4/7
info- FDP/CDP is disabled on port 4/3
info- FDP/CDP is disabled on port 4/5
info- FDP/CDP is disabled on port 4/7
For example, when VPLS endpoint is deleted the info messages are displayed as below.
1 When only FDP is enabled globally.
Brocade(config-mpls-vpls-vpls1-vlan-100)#no tag eth 4/3 eth 4/5 eth 4/7
info- FDP is enabled on port 4/3
info- FDP is enabled on port 4/5
info- FDP is enabled on port 4/7
2 When only CDP is enabled globally.
Brocade(config-mpls-vpls-vpls1-vlan-100)#no tag eth 4/3 eth 4/5 eth 4/7
info- CDP is enabled on port 4/3
info- CDP is enabled on port 4/5
info- CDP is enabled on port 4/7
3 When both FDP/CDP is enabled globally.
Brocade(config-mpls-vpls-vpls1-vlan-100)#no tag eth 4/3 eth 4/5 eth 4/7
info- FDP/CDP is enabled on port 4/3
info- FDP/CDP is enabled on port 4/5
info- FDP/CDP is enabled on port 4/7
NOTE
Configuring VPLS endpoint over FDP/CDP enabled interface will implicitly disable FDP/CDP on that
specific interface and show run will not display any info about FDP/CDP configuration for that
interface. Deleting the VPLS endpoint will retain the prior FDP/CDP configuration on that specific
interface and show run now displays the FDP/CDP info again for that specific interface.
Uni-directional Link Detection packets
Uni-directional Link Detection (UDLD) cannot be configured on a VPLS endpoint port and a VPLS
endpoint cannot be configured on a physical port that has UDLD enabled. This restriction is
enforced by the CLI. When a VPLS endpoint receives any UDLD traffic, this traffic is dropped by the
router at ingress. However, when the VPLS has CPU protection enabled, this traffic is hardware-
flooded intermittently.
Flooding Layer 2 BPDUs with a VPLS instance
By default, Layer 2 Spanning Tree Protocol (STP) and Per VLAN Spanning Tree (PVST) BPDUs
entering a VPLS endpoint are not transparently flooded within the VPLS instance. The BPDUs are
dropped when they enter the VPLS endpoint. The user can change this default behavior to not
block BPDUs and transparently flood them within the VPLS instance, by configuration on a
per-physical-port basis.
To flood BPDUs with a VPLS, use the following command.
Brocade(config)# interface ethernet 1/1
Brocade(config-if-e10000-1/1)# no vpls-bpdu-block
Syntax: [no] vpls-bpdu-block