HP 6125XLG R2306-HP 6125XLG Blade Switch High Availability Configuration Guide - Page 25

Configuring LB on MEPs, Configuring LT on MEPs

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• Configurations in Layer 2 aggregate interface view take effect on the aggregate interface and all its member ports. • Configurations on a member port take effect only when the member port leaves the aggregation group. To configure CC on a MEP: Step 1. Enter system view. 2. (Optional.) Set the CCM interval field. 3. Enter Layer 2 Ethernet interface view or Layer 2 aggregate interface view. 4. Enable CCM sending on a MEP. Command system-view cfd cc interval interval-value service-instance instance-id Remarks N/A By default, the interval field value is 4. interface interface-type interface-number N/A cfd cc service-instance instance-id By default, CCM sending is mep mep-id enable disabled on a MEP. Configuring LB on MEPs The LB function can verify the link state between the local MEP and the remote MEP or MIP. To configure LB on a MEP: Task Enable LB. Command cfd loopback service-instance instance-id mep mep-id { target-mac mac-address | target-mep target-mep-id } [ number number ] Remarks By default, LB is disabled. Available in any view. Configuring LT on MEPs LT can trace the path between source and target MEPs, and can locate link faults by automatically sending LT messages. The two functions are implemented in the following way: • To implement the first function, the source MEP first sends LTM messages to the target MEP. Based on the LTR messages in response to the LTM messages, the path between the two MEPs is identified. • In the latter case, after LT messages automatic sending is enabled, if the source MEP fails to receive the CCM frames from the target MEP within 3.5 times the transmission interval, the link between the two is considered faulty and LTM frames (with the target MEP as the destination and the TTL field in the LTM frames set to the maximum value 255) will be sent out. Based on the LTRs that the MIPs return, the fault source is located. To configure LT on MEPs: 20

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20
•
Configurations in Layer 2 aggregate interface view take effect on the aggregate interface and all
its member ports.
•
Configurations on a member port take effect only when the member port leaves the aggregation
group.
To configure CC on a MEP:
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
(Optional.) Set the CCM
interval field.
cfd cc interval
interval-value
service-instance
instance-id
By default, the interval field value is
4.
3.
Enter Layer 2 Ethernet
interface view or Layer 2
aggregate interface view.
interface
interface-type
interface-number
N/A
4.
Enable CCM sending on a
MEP.
cfd cc service-instance
instance-id
mep
mep-id
enable
By default, CCM sending is
disabled on a MEP.
Configuring LB on MEPs
The LB function can verify the link state between the local MEP and the remote MEP or MIP.
To configure LB on a MEP:
Task
Command
Remarks
Enable LB.
cfd loopback service-instance
instance-id
mep
mep-id
{
target-mac
mac-address
|
target-mep
target-mep-id
}
[
number
number
]
By default, LB is disabled.
Available in any view.
Configuring LT on MEPs
LT can trace the path between source and target MEPs, and can locate link faults by automatically
sending LT messages. The two functions are implemented in the following way:
•
To implement the first function, the source MEP first sends LTM messages to the target MEP. Based
on the LTR messages in response to the LTM messages, the path between the two MEPs is identified.
•
In the latter case, after LT messages automatic sending is enabled, if the source MEP fails to receive
the CCM frames from the target MEP within 3.5 times the transmission interval, the link between the
two is considered faulty and LTM frames (with the target MEP as the destination and the TTL field in
the LTM frames set to the maximum value 255) will be sent out. Based on the LTRs that the MIPs return,
the fault source is located.
To configure LT on MEPs: