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Cisco ONS 15454 Reference Manual, R8.5.x
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Chapter 13 Management Network Conn ectivity
13.7 IPv6 Network Compatibility
13.7 IPv6 Network Compatibility
Cisco ONS 15xxx products can function in an IPv6 network when an internet router that supports
Network Address Translation - Protocol Translation (NAT-PT) is positioned between the GNE, such as
an ONS 15454, and the client workstation. NAT-PT is defined in RFC-2766. IPv4 and IPv6 nodes
communicate with each other using NAT-PT by allowing both IPv6 and IPv4 stacks to interface between
the IPv6 DCN and the IPv4 DCC networks.
NAT-PT binds addresses in IPv6 networks with addresses in IPv4 networks and vice versa to provide
transparent routing for the packets traveling between address types. This requires no changes to end
nodes and IP packet routing is completely transparent to end nodes. It does, however, require NAT-PT
to track the sessions it supports and mandates that inbound and outbound datagrams pertaining to a
session traverse the same NAT-PT router. Protocol translation is used to extend address translation with
protocol syntax/semantics translation.
Note Only Mozilla 1.7 is supported on clients interfacing with IPv6 networks.
13.8 FTP Support for ENE Database Backup
The Cisco ONS 15454 provides FTP database backup and restore download t o ENEs when
proxy/firewall is enabled. This feature allows you to provision a list of legal FTP hosts in CTC, that can
be used with TL1 commands to perform database backup/ restore or software download. The FTP hosts
can be provisioned to elapse after a specified time interval with the enable FTP relay function.
Once FTP host are provisioned, and FTP Releay is enabled, TL1 users can then use the COPY-RFILE
command to perform database backup/restore or software downloa d to and from this list of legal FTP
hosts that are provisioned to ENEs. Also, TL1 supports TID to IP address tra nslation for the GNE TID
that is specified in the FTP URL of COPY-RFILE and COPY-IOSCFG commands.
Using the FTP Host provisioning feature in CTC and TL1 you can con figure up to 12 valid FTP hosts.
ENEs are allowed access through the firewall according to the time configured in the FTP Relay Timer
in CTC or TL1. The time interval is 1 to 60 minutes, and once the timer elapses, all FTP access to the
FTP host is blocked again. A time of 0 disallows ENE access to FTP commands through the firewall.
When the firewall is not enabled (Proxy only), all FTP operations to the ENE will be allowed – software
download, database backup/restore and IOS config file backup/restore. All FTP ope rations to the ENEs
will be blocked when firewall is enabled.