User's Manual
Table Of Contents
- Chapter 1 INTRODUCTION
- Chapter 2 INSTALLATION
- Chapter 3 witch Management
- Chapter 4 Basic Switch Configuration
- Chapter 5 File System Operations
- Chapter 6 Cluster Configuration
- Chapter 7 USB Function Configuration
- Chapter 8 Device Management
- Chapter 9 Port Configuration
- Chapter 10 Port Isolation Function Configuration
- Chapter 11 Port Loopback Detection Function Configuration
- Chapter 12 ULDP Function Configuration
- Chapter 13 LLDP Function Operation Configuration
- Chapter 14 Port Channel Configuration
- Chapter 15 MTU Configuration
- Chapter 16 bpdu-tunnel-protocol Configuration
- Chapter 17 DDM Configuration
- Chapter 18 EFM OAM Configuration
- Chapter 19 LLDP-MED
- Chapter 20 PORT SECURITY
- Chapter 21 QSFP+ Port Split and Combination Configuration
- Chapter 22 VLAN Configuration
- Chapter 23 MAC Table Configuration
- Chapter 24 MSTP Configuration
- Chapter 25 QoS Configuration
- Chapter 26 PBR Configuration
- Chapter 27 IPv6 PBR Configuration
- Chapter 28 Flow-based Redirection
- Chapter 29 Egress QoS Configuration
- Chapter 30 Flexible QinQ Configuration
- Chapter 31 Layer 3 Management Configuration
- Chapter 32 ARP Scanning Prevention Function Configuration
- Chapter 33 Prevent ARP, ND Spoofing Configuration
- Chapter 34 ARP GUARD Configuration
- Chapter 35 Gratuitous ARP Configuration
- Chapter 36 DHCP Configuration
- Chapter 37 DHCPv6 Configuration
- Chapter 38 DHCP option 82 Configuration
- Chapter 39 DHCPv6 option37, 38
- Chapter 40 DHCP Snooping Configuration
- Chapter 41 DHCP option 60 and option 43
- Chapter 42 IPv4 Multicast Protocol
- Chapter 43 IPv6 Multicast Protocol
- Chapter 44 Multicast VLAN
- Chapter 45 ACL Configuration
- Chapter 46 Self-defined ACL Configuration
- Chapter 47 802.1x Configuration
- 47.1 Introduction to 802.1x
- 47.2 802.1x Configuration Task List
- 47.3 802.1x Application Example
- 47.4 802.1x Troubleshooting
- Chapter 48 The Number Limitation Function of MAC and IP in Port, VLAN Configuration
- 48.1 Introduction to the Number Limitation Function of MAC and IP in Port, VLAN
- 48.2 The Number Limitation Function of MAC and IP in Port, VLAN Configuration Task Sequence
- 48.3 The Number Limitation Function of MAC and IP in Port, VLAN Typical Examples
- 48.4 The Number Limitation Function of MAC and IP in Port, VLAN Troubleshooting Help
- Chapter 49 Operational Configuration of AM Function
- Chapter 50 Security Feature Configuration
- 50.1 Introduction to Security Feature
- 50.2 Security Feature Configuration
- 50.2.1 Prevent IP Spoofing Function Configuration Task Sequence
- 50.2.2 Prevent TCP Unauthorized Label Attack Function Configuration Task Sequence
- 50.2.3 Anti Port Cheat Function Configuration Task Sequence
- 50.2.4 Prevent TCP Fragment Attack Function Configuration Task Sequence
- 50.2.5 Prevent ICMP Fragment Attack Function Configuration Task Sequence
- 50.3 Security Feature Example
- Chapter 51 TACACS+ Configuration
- Chapter 52 RADIUS Configuration
- Chapter 53 SSL Configuration
- Chapter 54 IPv6 Security RA Configuration
- Chapter 55 VLAN-ACL Configuration
- Chapter 56 MAB Configuration
- Chapter 57 PPPoE Intermediate Agent Configuration
- Chapter 58 SAVI Configuration
- Chapter 59 Captive Portal Authentication
- 59.1 Captive Portal Authentication Configuration
- 59.2 Accounting Function Configuration
- 59.3 Free-resource Configuration
- 59.4 Authentication White-list Configuration
- 59.5 Automatic Page Pushing after Successful Authentication (it is not supported currently)
- 59.6 http-redirect-filter
- 59.7 Portal Non-perception
- 59.8 Portal Escaping
- Chapter 60 VRRP Configuration
- Chapter 61 IPv6 VRRPv3 Configuration
- Chapter 62 MRPP Configuration
- Chapter 63 ULPP Configuration
- Chapter 64 ULSM Configuration
- Chapter 65 Mirror Configuration
- Chapter 66 RSPAN Configuration
- Chapter 67 SNTP Configuration
- Chapter 68 NTP Function Configuration
- Chapter 69 DNSv4/v6 Configuration
- Chapter 70 Summer Time Configuration
- Chapter 71 Monitor and Debug
- Chapter 72 Reload Switch after Specified Time
- Chapter 73 Debugging and Diagnosis for Packets Received and Sent by CPU
- Chapter 74 VSF
- Chapter 75 SWITCH OPERATION
- Chapter 76 TROUBLESHOOTING
- Chapter 77 APPENDIX A
- Chapter 78 GLOSSARY
Configuration Guide of XGS-5240-Series
151
frame at least in a second.)
3. Remote Fault Detection
In a network where traffic is interrupted due to device failures or unavailability, the flag
field defined in Ethernet OAMPDUs allows an Ethernet OAM entity to send fault information to
its peer. As Information OAMPDUs are exchanged continuously across established OAM
connections, an Ethernet OAM entity can inform one of its OAM peers of link faults through
Information OAMPDUs. Therefore, the network administrator can keep track of link status in
time through the log information and troubleshoot in time.
There are three kinds of link faults for Information OAMPDU, they are Critical Event, Dying
Gasp and Link Fault, and their definitions are different for each manufacturer, here the
definitions are as below:
Critical Event: EFM OAM function of port is disabled.
Link Fault: The number of unidirectional operation or fault can not be less than the high
threshold in local. Unidirectional Operation means unidirectional link can not work normally on
full-duplex link without autonegotiaction. EFM OAM can detect the fault and inform the remote
OAM peers through sending Information OAMPDU.
Dying Gasp: There is no definition present. Although device does not generate Dying
Gasp OAMPDU, it still receives and processes such OAMPDU sent by its peer.
4. Remote loopback testing
Remote loopback testing is available only after an Ethernet OAM connection is established.
With remote loopback enabled, operating Ethernet OAM entity in active mode issues remote
loopback requests and the peer responds to them. If the peer operates in loopback mode, it
returns all packets except Ethernet OAMPDUs to the senders along the original paths.
Performing remote loopback testing periodically helps to detect network faults in time.
Furthermore, performing remote loopback testing by network segments helps to locate
network faults. Note: The communication will not be processed normally in remote loopback
mode.
Typical EFM OAM application topology is in the following, it is used for point-to-point link
and emulational IEEE 802.3 point-to-point link. Device enables EFM OAM through
point-to-point connection to monitor the link fault in the First Mile with Ethernet access. For
user, the connection between user to telecommunication is “the First Mile”, for service provider,
it is “the Last Mile”.