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Chapter 1 Introduction IPmux-1/1E Installation and Operation Manual
1-18 Functional Description
VLAN Support
VLAN, according to IEEE 802.1p&Q, adds four bytes to the MAC layer of the
Ethernet frame. The user can set the contents of these bytes, MAC layer priority
and VLAN ID. In this mode, only VLAN format frames are sent and received by
IPmux-1. Figure 1-18 shows the VLAN tag format.
802.1D Tag Protocol Type
81 00
user_priority
CFI = 0
VID
8654 18 1
Priority
VLAN ID
Figure 1-18. VLAN Tag Format (802.1p&Q)
UDP Support
Table 1-3. UDP Ports Definition
Field Length (Bits) Field Description Value Function
2 bytes UDP Source Port 2–497d* Destination timeslots bundle
2 bytes UDP Destination Port 2142d Standard TDMoIP® UDP
port
* The MSB of this field can be either 1 or 0 for inband end-to-end proprietary signaling.
The UDP Source Port field is used for destination timeslots bundle indication.
For example, if the destination is:
Bundle 1 – 02, Bundle 2 – 03, Bundle 3 – 04, Bundle 4 – 05, etc.
For more information about VLAN tagging, refer to IEEE 802.1p&Q.
Packet Delay Variation
Packets are transmitted at set intervals. Packet Delay Variation is the maximum
deviation from the nominal time the packets are expected to arrive at the far end
device. IPmux-1 has a buffer that compensates for the deviation from the expected
packet arrival time to prevent IPmux-1 buffers from emptying out or overflowing.
Packet Delay Variation is an important network parameter. Large PDV (exceeding
the jitter buffer configuration) will cause receive buffer underflows and errors at
the TDM level (see Figure 1-19).
To compensate for large PDV, configure the PDVT (jitter) buffer to a higher value.
Note
- Gateways 1
- IPmux-1, IPmux-1E 3
- Limited Warranty 4
- General Safety Instructions 5
- Handling Energized Products 6
- FCC-15 User Information 8
- Declaration of Conformity 10
- Preface 11
- Conventions 12
- Quick Start Guide 13
- Configuration 14
- Contents 15
- Table of Contents 16
- List of Figures 17
- List of Tables 19
- Introduction 21
- Applications 22
- Overview 1-3 23
- 1-4 Overview 24
- Features 25
- ISDN BRI 26
- FXS/FXO/E&M 26
- Ethernet Ports 26
- To calculate distance: 27
- TDMoIP® Operation Modes 27
- Bundle Redundancy 28
- 1.3 Functional Description 29
- Static Mode 30
- Dynamic CAS Mode 30
- CESoIP Mode 30
- ISDN/FXS/FXO/E&M 34
- Network Timing Schemes 35
- Frame Format 36
- MAC IP UDP 37
- VLAN Support 38
- UDP Support 38
- PDVT (Jitter) Buffer 39
- Intrinsic PDV in CESoIP Mode 40
- Unstructured 41
- Structured 41
- Round Trip Delay 42
- Packet Delay in CESoIP Mode 43
- VLAN Traffic Behavior 45
- Ethernet User Port 46
- Features: 47
- • No network port learning 51
- Rate + User Untagged Mode 52
- Lease Length 53
- Manager Option 53
- E1 Port 53
- E1 Framing 53
- Chapter 2 59
- Installation 59
- IPmux-1 60
- IPmux-1E 60
- Warning 61
- E1 USER NETW ORK 62
- Location of Connectors 63
- Grounding 65
- Connecting the AC Power 66
- Connecting the DC Power 66
- Chapter 3 67
- Operation 67
- Without Control Terminal 69
- Turning IPmux-1/1E Off 70
- 3.3 Getting Started 71
- Main Menu 72
- System Menu 78
- Performance Monitoring 81
- Chapter 4 83
- Troubleshooting and 83
- Diagnostics 83
- Table 4-1. Event Types 84
- *Sequence Number ERRORS 85
- 4.2 Troubleshooting 86
- Statistics 87
- One Ethernet Port 93
- With User Ethernet Port 96
- Bundle Connection Statistics 99
- LAN Statistics above.) 101
- Chapter 1 101
- External Loop 105
- Internal Loop 105
- Remote Loopback 106
- Tone Injection 106
- Appendix A 111
- Boot Sequence for 111
- Downloading Software 111
- Accessing the File System 112
- Booting IPmux-1/1E A-3 113
- A-4 Booting IPmux-1/1E 114
- Appendix B 115
- Telnet Operation 116
- System Security 116
- Telnet Access 116
- Appendix C 117
- SNMP Management 117
- MIB Structure 118
- SNMP Communities 119
- Authentication 120
- Network Management Stations 120
- Appendix D 121
- TFTP Download Procedures 121
- Preliminary Procedure 122
- Checking the Download 123
- Appendix E 125
- Configuration Menus 125
- E.1 Main Menu 126
- General Information 127
- Self-Test Results 128
- System Event Log 129
- Logfile Events 130
- E.3 General Configuration 131
- Host IP 132
- Default Gateway 132
- DHCP Status 133
- Management Configuration 133
- Authentication/Community 133
- Manager List 134
- Alarm Traps Mask 135
- ASCII Terminal Configuration 137
- Time/Date Update 137
- Download/Upload Using XMODEM 138
- Type Y 140
- Type N 141
- T1 Configuration 144
- E.5 IPmux-1E Configuration 147
- ISDN Channel Configuration 148
- Analog Configuration 149
- Analog Channel Configuration 150
- Activation Criterion 158
- E.11 Performance Monitoring 163
- ISDN Statistics in IPmux-1 166
- LAN Status (no User Port) 167
- To reset counters: 168
- Type R 168
- Table E-30. LAN Status 168
- Aging Time 171
- LAN Configuration 172
- Erase MAC Table 173
- VLAN Configuration 173
- LAN Status 174
- • Press N 175
- Customer Response Form 179
- Error Report 181
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