This command configures a service of a given type by name. This command allows configuration of the S-VID and NNI port association at
the service level.
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Format
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dot1ad service service-name svid svid {e–lan | e-line | e–tree | tls} [nni port
list]
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Mode
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Global Config
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| Parameter |
Description |
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service-name
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The user-assigned service name.
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svid
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The service VLAN ID (S-VID).
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| e-lan | e-line | e-tree | tls
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These parameters define the type of traffic associated with this service instance.
- e-lan – A switched or general service is one in which the traffic associated with that service is forwarded based on a
standard L2 switching lookup using the S-VID and destination MAC as lookups in the FDB. In LCOS SX a port can be a member of multiple E-LAN services. If a switched service is
assigned to multiple UNI ports, those ports will be able to forward traffic to each other as well as to the NNI ports.
The same E-LAN service can also be applied on UNI-P and UNI-S ports.
- e-line – The e-line parameter creates a point-to-point service, in which traffic is forwarded
directly to the NNI port in the upstream direction and to the associated UNI port in the downstream direction. An e-line
service bypasses the standard VLAN/MAC-based switching decisions, including the source MAC learning. Be default,
LCOS SX does not learn traffic belonging to the e-line service. An e-line
service-instance defines a point-to-point service in which only one UNI-P or UNI-S port participates.
Note: It is important to note that downstream broadcast and multicast traffic will still be redirected to the
associated UNI port participating in the e-line service.
- e-tree – The e-tree parameter creates a point-to-multipoint service in which the
traffic associated with that service is forwarded directly to the NNI port in the upstream direction and direct to the
associated UNI port(s) in the downstream direction. If an e-tree service instance is applied to multiple UNI ports, it
becomes a point- to-multipoint service in which the participating user ports are still isolated from each
other.
Note: It is important to note that downstream broadcast, multicast, and unknown destination (DLF) traffic will
still be forwarded (replicated) to all ports participating in the e-tree service.
- tls (Transparent LAN Service). Administrators can configure a TLS on UNI-P and UNI-S ports. A Transparent LAN
service is used to connect the remote sites of a customer with C-Tag transparency. There are no match criteria for a
TLS.
- If no TLS service is configured on an UNI-P port, all packets not matching any of the service instances
configured on the ports will be dropped. If a TLS service is configured, then all packets not matching the other
service instances on that port will be tagged as per the TLS definition on that port. TLS service defined by the
user will be used by Untagged, Priority Tagged, and C-VLAN tagged packets which do not match any other service
instances on the port.
- If a TLS service is configured on an UNI-S port, service VLAN tagged (including double tagged) frames that do not
match other service instances on the port will be forwarded to appropriate NNI port(s) based on the S-VID associated
with the service without any VLAN modification. Untagged and priority tagged packets that do not match other service
instances on the port will be dropped.
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port-list
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NNI port list.
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Example: The following shows an example of service creation with an NNI port list.
(Switch)(Config)#dot1ad service s1 svid 10 e–lan nni 1/0/6,1/0/8,1/0/10
