Subscriber Services
7210 SAS-X, R6 OS Services Guide Page 103
the Layer 2 header. It also allows this router to accept an MTU advertized by the far-end PE which
value matches either its advertised MTU or its advertised MTU minus the Layer 2 headers.
By default, the router advertizes a VC-MTU equal to the Layer 2 service MTU minus the Layer 2
header and always matches its advertized MTU to that signaled by the far-end PE rotuer, otherwise
the spoke-sdp goes operationally down.
When this command is enabled on the SDP, it has no effect on a spoke-sdp of an IES/VPRN spoke
interface using this SDP-ID. The router continues to signal a VC MTU equal to the net IP interface
MTU, which is min (ip-mtu, sdp operational path mtu - Layer 2 headers). The router also continues to
make sure that the advertized MTU values of both PE routers match or the spoke-sdp goes
operationally down.
The no form of the command disables the VC-type MTU override and returns to the default behavior.
Default
no adv-mtu-override
bgp-tunnel
Syntax [no] bgp-tunnel
Context config>service>sdp
Description This command allows the use of BGP route tunnels available in the tunnel table to reach SDP far-end
nodes. Use of BGP route tunnels are only available with MPLS-SDP. Only one of the transport
methods is allowed per SDP - LDP, RSVP-LSP or BGP-Tunnel (BGP-Tunnel is not supported on
multi-mode LSP)
NOTE: The 7210 SAS provides an option to install labels for only those BGP 3107 labelled routes
which are in use by services. For more details about this option, see the 7210 SAS-M,T,X,R6 Routing
Protocols User Guide.
The no form of the command disables resolving BGP route tunnel LSP for SDP far-end.
Default no bgp-tunnel (BGP tunnel route to SDP far-end is disabled)
far-end
Syntax far-end ip-address node-id node-id [global-id global-id]
no far-end
Context config>service>sdp
Description Platforms Supported: MPLS-TP is supported only on 7210 SAS-R6.
This command configures the system IP address of the far-end destination 7210 SAS X router for the
Service Distribution Point (SDP) that is the termination point for a service.
The far-end IP address must be explicitly configured. The destination IP address must be a 7210 SAS
X system IP address.
If the SDP uses MPLS encapsulation, the far-end ip-address is used to check LSP names when added
to the SDP. If the “to IP address” defined within the LSP configuration does not exactly match the
SDP far-end ip-address, the LSP will not be added to the SDP and an error will be generated.
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