lxvi BigIron RX Series Configuration Guide
53-1002253-01
ACL Duplication Check The acl-duplication-check command has been 
changed to acl-duplication-check-disable. With 
this command, software checking for duplicate 
ACL entries will be disabled after an upgrade. 
Book: BigIron RX Series 
Configuration Guide
Chapter: “Access Control 
List” 
Section:“Enabling ACL 
duplication check”
ISIS v6 With this release of the Multi-Service IronWare 
software, IPv6 IS-IS is supported. See the "ISIS 
v6" chapter of the Foundry BigIron RX Series 
Configuration Guide.
N/A
IPv6 ACLs In this release you can use an IPv6 ACL to provide 
input to other features such as route maps and 
distribution lists.
Book: BigIron RX Series 
Configuration Guide
Chapter: “IPv6 Access 
Control Lists (ACLs)”
Default Originate Route for BGP In this release, if a default route is not present in 
the IP routing table, the user can configure a 
major route to be used for forwarding packets to 
all unknown destination. Starting with release 
02.3.00a.
Book: BigIron RX Series 
Configuration Guide
Chapter: “Configuring 
BGP4 (IPv4 and IPv6)”
Section:“Originating the 
default route”
Changes to BGP4 Path Selection 
for a Route
With this release of Multi-Service IronWare, the 
process by which BGP selects a path has 
changed. The following procedure replaces the 
procedure described in the BigIron RX Series 
Configuration Guide.
Book: BigIron RX Series 
Configuration Guide
Chapter: “Configuring 
BGP4 (IPv4 and IPv6)”
Section:“How BGP4 
selects a path for a route”
BGP allowas-in command  The allowas-in command has been added to this 
release to allow you to set a parameter that 
disables the BGP AS_PATH check function for 
routes learned from a specified location.
Book: BigIron RX Series 
Configuration Guide
Chapter: “Configuring 
BGP4 (IPv4 and IPv6)”
Section:“Configuring a 
switch to allow routes with 
its own AS number”
Default Route ECMP This feature allows for load distribution of traffic 
among the available default route next-hops.
Book: BigIron RX Series 
Configuration Guide
Chapter: “Configuring IP”
Section:“Default route 
ECMP”
Transparent Firewall Mode  The Transparent Firewall mode feature allows 
users to insert a Firewall in front of their existing 
network without changing the statically defined 
IP addresses of their network-connected devices. 
This will allow the users to permit selected 
devices from a subnet to cross the firewall while 
access to other devices on the same subnet are 
denied.
Book: BigIron RX Series 
Configuration Guide
Chapter: “VLANs”
Section:“Transparent 
firewall mode”
TABLE 16 Layer 3 enhancements (Continued)
Enhancement Description See...