Junos® OS Ethernet Interfaces Configuration ... - Juniper Networks

Junos ®
OS 12.3 Ethernet Interfaces Configuration Guide
Configuring Faster Convergence
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maintenance-association ma1 {
protect-maintenance-association ma2;
continuity-check {
interval 100ms;
connection-protection-tlv;
}
mep 100 {
interface ge-1/1/0.0;
direction down;
auto-discovery;
}
}
maintenance-association ma2 {
continuity-check {
interval 100ms;
connection-protection-tlv;
}
mep 101 {
interface ge-1/2/0.0;
direction down;
auto-discovery;
}
remote-mep 100
action-profile p1;
}
}
}
}
You can apply an action profile to provide faster convergence for dual-homed
multipoint-to-multipoint network topologies. If a multipoint-to-multipoint Ethernet
service uses MAC-based forwarding and stale MAC addresses exist in the learning tables,
this can result in traffic black holes in the network where incoming traffic is silently
discarded, without informing the source that the data did not reach its intended recipient.
With the profile configuration, if the interface-status TLV received on the protect interface
is up, then the interface-status TLV on the working interface is marked as down and the
PE device for the protect interface propagates a remote MAC-flush message to the PE
devices in the virtual private LAN service (VPLS) by using TLDP-MAC-FLUSH. The MAC
flush avoids traffic blackholing due to stale mac-db entries.
To configure the interface-status-tlv down event, include the interface-status-tlv down
statement at the [edit protocols oam ethernet connectivity-fault-management
action-profile profile-name event] hierarchy level.
To configure propagate-remote-flush as the action profile’s action, include the
propagate-remote-flush statement at the [edit protocols oam ethernet
connectivity-fault-management action-profile profile-name action] hierarchy level.
To configure propagate-remote-flush as the clear-action, include the
propagate-remote-flush statement at the [edit protocols oam ethernet
connectivity-fault-management action-profile profile-name clear-action] hierarchy level.
Copyright © 2012, Juniper Networks, Inc.