VPRN Service Configuration Commands
Page 1264 7750 SR OS Services Guide
prefix
Syntax prefix ipv6-address/prefix-length [pd] [wan-host]
no prefix ipv6-address/prefix-length
Context config>service>vprn>sub-if>ipv6>sub-prefixes
Description This command allows a list of prefixes(using the prefix command multiple times) to be routed to
hosts associated with this subscriber interface. Each prefix will be represented in the associated FIB
with a reference to the subscriber interface. Prefixes are defined as being for prefix delegation (pd) or
use on a WAN interface or host (wan-host).
Parameters ipv6-address — Specifies the 128-bit IPv6 address.
Values 128-bit hexadecimal IPv6 address in compressed form
prefix-length — Specifies the length of any associated aggregate prefix.
Values 32-63
pd — Specifies that this aggregate is used by IPv6 ESM hosts for DHCPv6 prefix-delegation.
wan-host — Specifies that this aggregate is used by IPv6 ESM hosts for local addressing or by a
routing gateway’s WAN interface.
private-retail-subnets
Syntax [no] private-retail-subnets
Context config>service>vprn>sub-if
Description This command controls the export of subnets to the forwarding service. When this attribute is
configured, subnets defined on this retail subscriber interface will no longer be exported to the
associated wholesale VPRN and will remain private to the retail VPRN. This is useful in a PPPoE
business service context as it allows retail services to use overlapping IP address spaces even if these
services are associated with the same wholesale service.
PPPoE sessions are actually terminated in the retail service although their traffic transits on a SAP
belonging to the wholesale service. This configuration is incompatible, however, with IPoE host
management (DHCP, static-host and ARP-host) as these host types require that the retail subnets are
exported to the wholesale VPRN. Thus, if PPPoE sessions need to coexist with IPoE hosts, this
attribute should not be configured on this retail interface.
This command will fail if the subscriber interface is not associated with a wholesale service.
If the retail VPRN is of the type hub, this attribute is mandatory. Then, it will be enabled by default
and it will not be possible to deconfigure it.
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