Vlan Stacking; Multiple Ip Helper Addresses On A Vlan - Avaya 2330 Manual

Table 3: Supported protocols for VLAN classification rules
Classification rule parameter
ipv4
ipv6
mpls
arp
rarp
vlan-tagged
appletalk
ipx
pppoe-disc
pppoe-session
The supported encapsulations for protocol-based VLAN classification rules are:
• Ethernet Type II
• LLC SNAP
• LLC only

VLAN stacking

VLAN stacking refers to the encapsulation of one VLAN within another VLAN. A stacked VLAN
transparently tunnels packets through the stacked VLAN domain by adding an additional 4-
byte header to each packet.
Stacked VLANs offer the following features:
• VLAN transparency for IEEE 802.1Q tagged or untagged traffic through a service provider
core network
• A solution to VLAN scalability issues—you can summarize customer VLANs into core
stacked VLANs
• Uses a layered architecture to improve scalability

Multiple IP Helper Addresses on a VLAN

The Secure Router 2330/4134 supports multiple IP Helper addresses on a VLAN. The Multiple
IP Helper feature assists in broadcasting network traffic between client machines and servers
residing on different subnets. There are situations in which a user can want to control which
Configuration — Layer 2 Ethernet
Description
IPv4
IPv6
MPLS
ARP
Reverse ARP
802.1q VLAN tag
Appletalk
IPX
PPPoE discovery
PPPoE session
VLANs
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