Subscriber Services
7750 SR OS Services Guide Page 169
Description This command configures the Maximum Transmission Unit (MTU) in bytes that the Service
Distribution Point (SDP) can transmit to the far-end device router without packet dropping or IP
fragmentation overriding the SDP-type default path-mtu.
The default SDP-type path-mtu can be overridden on a per SDP basis. Dynamic maintenance
protocols on the SDP like RSVP may override this setting.
If the physical mtu on an egress interface or PoS channel indicates the next hop on an SDP path
cannot support the current path-mtu, the operational path-mtu on that SDP will be modified to a
value that can be transmitted without fragmentation.
The no form of this command removes any path-mtu defined on the SDP and the SDP will use the
system default for the SDP type.
Default The default path-mtu defined on the system for the type of SDP is used.
network-domain
Syntax network-domain network-domain-name
no network-domain
Context config>service>sdp
Description This command assigns a given SDP to a given network-domain. The network-domain is then taken
into account during sap-ingress queue allocation for VPLS SAP.
The network-domain association can only be done in a base-routing context. Associating a network
domain with an loop-back or system interface will be rejected. Associating a network-domain with an
interface that has no physical port specified will be accepted, but will have no effect as long as a
corresponding port, or LAG, is defined. The association of network-domain with loopback interface is
not possible.
A single SDP can only be associated with a single network-domain.
Default per default “default” network domain is assigned
pbb-etype
Syntax pbb-etype [0x0600..0xffff]
no pbb-etype
Context configure>service>sdp
Default 0x88E7
Description This command configures the Ethertype used for PBB.
Values 0x0600..0xffff: 1536 — 65535 (accepted in decimal or hex)
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