VPLS Service Configuration Commands
Page 466 7750 SR OS Services Guide
Default None
Parameters ip-address — Specifies the IP address for the static ARP in IP address dotted decimal notation.
ieee-mac-address — Specifies the 48-bit MAC address for the static ARP in the form
aa:bb:cc:dd:ee:ff or aa-bb-cc-dd-ee-ff where aa, bb, cc, dd, ee and ff are hexadecimal numbers.
Allowed values are any non-broadcast, non-multicast MAC and non-IEEE reserved MAC
addresses.
local-age
Syntax local-age seconds
no local-age
Context config>service>vpls
Description Specifies the aging time for locally learned MAC addresses in the forwarding database (FDB) for the
Virtual Private LAN Service (VPLS) instance.
In a VPLS service, MAC addresses are associated with a Service Access Point (SAP) or with a
Service Distribution Point (SDP). MACs associated with a SAP are classified as local MACs, and
MACs associated with an SDP are remote MACs.
Like in a Layer 2 switch, learned MACs can be aged out if no packets are sourced from the MAC
address for a period of time (the aging time). In each VPLS service instance, there are independent
aging timers for local learned MAC and remote learned MAC entries in the FDB. The local-age timer
specifies the aging time for local learned MAC addresses.
The no form of this command returns the local aging timer to the default value.
Default local age 300 — local MACs aged after 300 seconds.
Parameters seconds — The aging time for local MACs expressed in seconds.
Values 60 — 86400
mac-move
Syntax [no] mac-move
Context config>service>vpls
Description This command enables the context to configure MAC move attributes. A sustained high re-learn rate
can be a sign of a loop somewhere in the VPLS topology. Typically, STP detects loops in the
topology, but for those networks that do not run STP, the mac-move feature is an alternative way to
protect your network against loops.
When enabled in a VPLS, mac-move monitors the re-learn rate of each MAC. If the rate exceeds the
configured maximum allowed limit, it disables the SAP where the source MAC was last seen. The
SAP can be disabled permanently (until a shutdown/no shutdown command is executed) or for a
length of time that grows linearly with the number of times the given SAP was disabled. You have the
option of marking a SAP as non-blockable in the config>service>vpls>sap>limit-mac-move or
config>service>vpls>spoke-sdp>limit-mac-move contexts, see page 497. This means that when the
re-learn rate has exceeded the limit, another (blockable) SAP will be disabled instead.
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