Interface names associate an IP address to the interface, and then associate the IP interface with a physical port. The logical interface can associate attributes like an IP address, port, Link Aggregation Group (LAG) or the system.
There are no default interfaces.
Note that you can configure a VPRN interface as a loopback interface by issuing the loopback command instead of the sap sap-id command. The loopback flag cannot be set on an interface where a SAP is already defined and a SAP cannot be defined on a loopback interface.
When using mtrace/mstat in a Layer 3 VPN context then the configuration for the VPRN should have a loopback address configured which has the same address as the core instance's system address (BGP next-hop).
See OSPF configuration commands (IPv4 only) for CLI commands and syntax.
*A:7210 SAS>config>service>vprn>if# info detail
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no description
no address
no mac
arp-timeout 14400
no allow-directed-broadcasts
icmp
mask-reply
redirects 100 10
unreachables 100 10
ttl-expired 100 10
exit
no arp-populate
dhcp
shutdown
no description
proxy-server
shutdown
no emulated-server
no lease-time
exit
no option
no server
no trusted
no lease-populate
no gi-address
no relay-plain-bootp
no use-arp
exit
no authentication-policy
no ip-mtu
no host-connectivity-verify
no delayed-enable
no bfd
ipcp
no peer-ip-address
no dns
exit
no proxy-arp-policy
no local-proxy-arp
no remote-proxy-arp
no shutdown
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*A:7210 SAS>config>service>vprn>if#