In the static cellular interface IPv6 mode of operation, the PDN router interface IPv6 address is configured using the config>router>interface interface-name pdn>ipv6>address command. The cellular IP address assigned to the PDN router interface is never expected to change after each subsequent attachment to the cellular network. The address configured for the PDN router interface must be within the subnet of the network-assigned static IPv6 address upon PDN attachment, and the configured address cannot be the exact address assigned during the attachment. If the configured address is not within the subnet of the network-assigned IPv6 address or matches the network-assigned IPv6 address, then an alarm is raised and the PDN router interface is kept down.
The CLI output below shows an example of a PDN interface configured for static cellular interface IPv6 mode.
A:DUT# config# router
interface "pdn1-sim1" pdn
port 1/1/1
ipv6
address fd00:1:1:1::1/64
exit
no shutodwn
exit
exit
exit
When operating in static cellular interface IPv6 mode, consider the points listed below.
GRE-MPLS based services are not supported as those packets use IPv4 addresses.
IPSec secure interfaces are supported.
Some wireless service providers require that all packets entering their network from UE attached to their network have a source IP address that is within the IPv6 subnet assigned during the PDN attachment process. When this is a requirement and the node is using static cellular interface IPv6 mode, the PDN interface must be configured with an IP filter that allows only egress packets that have a source IP address that is within the subnet that was assigned during the PDN attachment. A filter must be configured on each PDN router interface that requires filtering.
The system IP address used by the NSP NFM-P to manage the node is a private IPv4 address. An in-band management VPRN service is required for the NSP NFM-P to reach the node.