Specifications

Chapter 1 Introduction Installation and Operation Manual
1-6 Overview IPmux-8/16 Ver. 6.00
VLAN-Based Bridging
VLAN-based bridging is performed in according to IEEE 802.1Q requirements. Up
to 64 VLANs are supported per 4-port Ethernet module. At ingress the bridge
supports tagged, priority-tagged and untagged frames.
1-Port Ethernet Module
The 1-port Ethernet module includes one full duplex Ethernet network port with
autonegotiation support.
If autonegotiation is disabled, IPmux-8/16 can be configured to any of the
following:
• 100BaseT: full duplex
• 10BaseT: full duplex
IPmux-8/16 supports VLAN ID and priority tagging (per 802.1p&Q).
A different VLAN can be configured for each TDMoIP flow so that operation over
a pure Layer 2 network is supported (see
Multibundling).
Ethernet redundancy backs up TDMoIP traffic if there is a failure in the Ethernet
link.
The IP addresses for two Ethernet modules of IPmux-8/16 can belong to the same
subnet. This allows you to connect two Ethernet cards in the same Ethernet
network.
You cannot have a manager on any host with an IP address that belongs to another
host’s subnet.
Default Next Hop per Host
You can configure a default next hop for every Ethernet interface. Every bundle
mapped to that Ethernet link uses this as its default next hop.
The Ethernet module has the following features:
• Reordering out-of-sequence packets arriving at IPmux-8/16 from the packet
network – IP networks may send packets in incorrect order or duplicate IP
packets; this creates a problem for TDMoIP traffic. The Ethernet card is able to
reorder up to 32 packets, depending on the TDM Bytes/frame size and jitter
buffer size. The formula, below, calculates the number of packets that can be
reordered by the IPmux-8/16 as a function of TDM bytes/frame and jitter
buffer size:
Max Reordered Packets =
(
)
(
)
()
48per_frameTDM_bytes_Number_of_47
8TSNumber_of_1fer_[ms]Jitter_Buf
×
×
×
−
The Packet Reordering mechanism and the Duplicate Packets Handling mechanism
operate only for the first bundle number in each E1/T1 port (e.g. for devices with E1
ports, bundles number 1, 32, 63, 94, etc.).
Note
Note