Vlans Without Member Ports - Avaya 8800 Planning And Engineering, Network Design

Figure 58: SPBM basic architecture
Related links
SPBM design guidelines

VLANs without member ports

The Avaya Ethernet Routing Switch 8800 manages VLANs without member ports differently than
the Virtual Services Platform 9000 and Virtual Services Platform 4000.
• The Ethernet Routing Switch 8800 always designates the VLAN as operationally up if there is
an attached I-SID.
• The Virtual Services Platform 9000 and Virtual Services Platform 4000 designate the VLAN as
operationally up only if there is a matching I-SID in the SPBM network. For more information,
see the following sections.
Ethernet Routing Switch 8800 implementation
If a VLAN has an IP address and is attached to an I-SID, the ERS 8800 designates that VLAN as
operationally up whether it has a member port or not. When the VLAN is operationally up, the IP
address of the VLAN will be in the routing table.
The ERS 8800 design behaves this way because the VLAN might be acting as an NNI in cases of
Layer 2 Inter-VSN routing. If the VLAN was acting as a UNI interface, it would require a member
port.
Virtual Services Platform 9000 and Virtual Services Platform 4000 implementation
If a VLAN is attached to an I-SID there must be another instance of that same I-SID in the SPBM
network.
• If another instance of that I-SID exists, the device designates that VLAN as operationally up
regardless of whether it has a member port or not.
When the VLAN is operationally up, the IP address of the VLAN will be in the routing table.
June 2016
on page 138
Planning and Engineering — Network Design
Comments on this document? infodev@avaya.com
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