StarTech.com ET91000LCOAM Full User Manual
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Instruction Manual
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Q in Q or double VLAN tagging is defined in IEEE802.1ad. Double VLAN tagging is
required when a service provider wishes to carry a customer’s VLAN tagged traffic
through its own VLAN network. In MEF (Metro Ethernet Forum) terms, the first tag or
“inner tag” is referred to as the C-tag (customer) while the second tag or “outer tag” is
referred to as the S-tag (service provider). Normal VLAN tag has an EtherType (TPID or
Tag Protocol Identifier) of 0x8100. The IEEE802.1ad standard recommends 0x88a8 TPID
for the outer or S-tag. Click the Apply button to save your settings.
Management VLAN
Use this section to configure a management VLAN and designate which ports it can be
accessed from.
Click the Apply button to save your settings.
802.3ah Functions Section
This converter supports IEEE 802.3ah, an OAM protocol that operates at Ethernet Layer
2 (Data Link layer). OAM provides mechanisms to monitor link operation / health and
to improve fault isolation.
OAM only works point-to-point over the fiber link. In addition to standard 802.3ah
functions like loop back and dying gasp, ET91000LCOAM also implements OAM to
provide complete provisioning of the remote fiber connected converter, without using
Layer 3 IP protocol. By using OAM, we can remote manage another fiber connected
converter, without IP addressing.
802.3ah Configuration
Use this section to configure OAM communication settings. Click the Apply button to
save your settings.