OmniSwitch OS6860/OS6900/OS10K Troubleshooting Guide Part No.032996-00 Rev.A
AOS Release 7.X and 8.X January 2015
Alcatel-Lucent Page 136 of 148
21. Troubleshooting Shortest Path Bridging (SPB)
Shortest Path Bridging (SPB) supports SPB MAC (SPB-M) as defined in the IEEE 802.1aq standard. SPB-M
is defined for use in Provider Backbone Bridge (PBB) networks as specified in the IEEE 802.1ah standard.
SPB-M provides a mechanism to automatically define a shortest path tree (SPT) bridging configuration
through a Layer 2 Ethernet network. SPB-M Ethernet services use this configuration to encapsulate and tunnel
data through the PBB network.
Shortest Path Bridging (SPB) implements frame forwarding on the shortest path between any two bridges in an
Ethernet network. The shortest path trees (SPTs) calculated by SPB provide the shortest and most efficient
path to and from the intended destination. SPTs are formed along the direct, straight-line links between
switches to make up an overall path through the topology that provides a robust, efficient direction for network
traffic to travel.
The bridging methodology needed to allow each bridge to serve as its own root bridge is enforced through
the use of SPB BVLANs. This type of VLAN does not learn customer MAC addresses or flood unknown
unicast and multicast traffic.
In This Chapter
“Troubleshooting SPB on OmniSwitch OS6900/OS10K/OS6860”
“SPB debug information”
“Bshell Troubleshooting”
Summary of the commands in this chapter is listed here:
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show service spb
show service isid
show service access
show service spb <service ID> ports
show service spb <service ID> sap port <chassis/slot/port:sap id>
show service spb <service ID> debug-info
show service spb <service ID> counters
show service l2profile
show spb isis services
show spb isis nodes
show spb isis adjacency detail
d chg source_vp
d chg source_vp
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21.1. Troubleshooting SPB on OmniSwitch
OS6900/OS10K/OS6860 series
The spb parameter is used to display information about SPB services. SAP count displays the number of
Service Access Points associated with this SPB service. Mcast mode provide the multicast replication mode
(Headend or Tandem) for the service.
For example:
-> show service spb
Legend: * denotes a dynamic object
SPB Service Info
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