
C
HAPTER
14
| Basic Administration Protocols
Connectivity Fault Management
– 541 –
◆
LTMs are sent as multicast CFM frames, and forwarded from MIP to MIP,
with each MIP generating a link trace reply, up to the point at which the
LTM reaches its destination or can no longer be forwarded.
◆
LTMs are used to isolate faults. However, this task can be difficult in an
Ethernet environment, since each node is connected through multipoint
links. Fault isolation is even more challenging since the MAC address of
the target node can age out in several minutes. This can cause the
traced path to vary over time, or connectivity lost if faults cause the
target MEP to be isolated from other MEPs in an MA.
◆
When using the command line or web interface, the source MEP used
by to send a link trace message is chosen by the CFM protocol.
However, when using SNMP, the source MEP can be specified by the
user.
◆
Parameters controlling the link trace cache, including operational state,
entry hold time, and maximum size can be configured on the Configure
"Configuring Global Settings for CFM"
).
P
ARAMETERS
These parameters are displayed:
◆
MD Index
– Domain index. (Range: 1-65535)
◆
MA Index
– MA identifier. (Range: 1-2147483647)
◆
Source MEP ID
– The identifier of a source MEP that will send the link
trace message. (Range: 1-8191)
◆
Target
■
MEP ID
– The identifier of a remote MEP that is the target of a link
trace message. (Range: 1-8191)
■
MAC Address
– MAC address of a remote MEP that is the target of
a link trace message. This address can be entered in either of the
following formats: xx-xx-xx-xx-xx-xx or xxxxxxxxxxxx
◆
TTL
– The time to live of the link trace message. (Range: 0-255 hops)
W
EB
I
NTERFACE
To transmit link trace messages:
1.
Click Administration, CFM.
2.
Select Transmit Link Trace from the Step list.
3.
Select an entry from MD Index and MA Index.
4.
Specify the source MEP, the target MEP using either its MEP identifier or
MAC address, and set the maximum number of hops allowed in the TTL
field.
Summary of Contents for ECS4110-28T
Page 2: ......
Page 4: ......
Page 63: ...FIGURES 63 Figure 428 Configuring VLAN Translation 1177...
Page 64: ...FIGURES 64...
Page 72: ...TABLES 72...
Page 74: ...SECTION I Getting Started 74...
Page 102: ...SECTION II Web Configuration 102 General IP Routing on page 679...
Page 154: ...CHAPTER 4 Basic Management Tasks Resetting the System 154...
Page 198: ...CHAPTER 5 Interface Configuration VLAN Trunking 198 Figure 65 Configuring VLAN Trunking...
Page 272: ...CHAPTER 9 Congestion Control Automatic Traffic Control 272...
Page 286: ...CHAPTER 10 Class of Service Layer 3 4 Priority Settings 286...
Page 420: ...CHAPTER 13 Security Measures DHCP Snooping 420...
Page 566: ...CHAPTER 14 Basic Administration Protocols OAM Configuration 566...
Page 638: ...CHAPTER 15 Multicast Filtering Multicast VLAN Registration for IPv6 638...
Page 662: ...CHAPTER 16 IP Configuration Setting the Switch s IP Address IP Version 6 662...
Page 678: ...CHAPTER 17 IP Services Configuring the PPPoE Intermediate Agent 678...
Page 792: ...CHAPTER 21 System Management Commands Switch Clustering 792...
Page 822: ...CHAPTER 23 Remote Monitoring Commands 822...
Page 888: ...CHAPTER 24 Authentication Commands PPPoE Intermediate Agent 888...
Page 968: ...CHAPTER 25 General Security Measures Port based Traffic Segmentation 968...
Page 994: ...CHAPTER 26 Access Control Lists ACL Information 994...
Page 1034: ...CHAPTER 28 Link Aggregation Commands Trunk Status Display Commands 1034...
Page 1044: ...CHAPTER 29 Power over Ethernet Commands 1044...
Page 1084: ...CHAPTER 33 UniDirectional Link Detection Commands 1084...
Page 1090: ...CHAPTER 34 Address Table Commands 1090...
Page 1194: ...CHAPTER 37 VLAN Commands Configuring Voice VLANs 1194...
Page 1388: ...CHAPTER 42 CFM Commands Delay Measure Operations 1388...
Page 1410: ...CHAPTER 44 Domain Name Service Commands 1410...
Page 1420: ...CHAPTER 45 DHCP Commands DHCP Relay 1420...
Page 1472: ...CHAPTER 46 IP Routing Commands IPv4 Commands 1472...
Page 1474: ...SECTION IV Appendices 1474...
Page 1502: ...COMMAND LIST 1502...
Page 1513: ......
Page 1514: ...ECS4110 28T ECS4110 28P ECS4110 52T ECS4110 52P E072014 ST R02 150200000929A...