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Changes to Default System Behavior 

SmartEdge OS for SmartEdge Routers , Release 6.4.1

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Changes to Default System Behavior in Release 6.4.1
2.1Changes to Default System Behavior in Release


Reference List

1   Introduction

This document describes the changes to the default system behavior introduced in Release 6.4.1 of the SmartEdge® OS for SmartEdge routers . For software installation and upgrade instructions, see Reference [1]. For details about the new and enhanced software features and the new hardware in this release, see Reference [2].

For current security notifications, visit the Ericsson E-business portal at

2   Changes to Default System Behavior in Release 6.4.1

2.1   Changes to Default System Behavior in Release

This release introduced the following changes to default system behavior.

2.1.1   Changes to IPsec VPN

IPsec VPN changed in Release in the following ways.   Maximum Number of On–Demand Tunnels Increased to 1,024

Up to 1,024 tunnels can be configured for an on-demand tunnel in tunnel configuration mode. In previous releases, the maximum number was 32. The default remains the same, at 8 tunnels.   show ike sa statistics tunnel Command Deprecated

The new show tunnel ipsec statistics ike command replaces the show ike sa statistics tunnel command. The new command provides options to:   Syntax Changes for debug ike card and debug ipsec card Commands

The card keyword replaces the asp keyword in the syntax for the following two commands in this release:

For both commands, the value you define for the level keyword is now a numeric value instead of a descriptive word.

Table 1    Values Defined for the level Keyword

New Value

Old Value




Only emergency events



Alert and more-severe events



Critical and more-severe events



Error and more-severe events



Warning and more-severe events



Notice and more-severe events



Informational and more-severe events



All events, including debug events   L4L7d Module Responsible for Tunnel Processing

The L4L7d module now handles all IPsec tunnel processing. All IPsec tunnel–related interactions with the ISM, RIB, or RCM should be debugged in L4L7d. In previous releases, the tunnelD and tunnel-mgr modules handled IPsec tunnel processing.

2.1.2   BFD Support on PIM Interfaces

BFD is enabled on PIM interfaces and for each neighbor on the interface.

2.1.3   BGP Graceful Restart Support for Labeled Address Families

In previous releases, BGP graceful restart negotiation was not supported for labeled address families. In Release, BGP graceful restart negotiation is supported for all IPv4 and IPv6 address families (including labeled address families).

2.1.4   Support for IPv6 Path MTU Negotiation

In previous releases, the SmartEdge router dropped IPv6 packets that were too big for the router to process. In Release, all IPv6 packets are processed. You can use the new ipv6 path-mtu-discovery discovery-interval command (in global configuration mode) to globally enable IPv6 PMTU negotiation on the router and configure the timeout value used for aging PMTUs. Enabling IPv6 PMTU triggers the PMTU discovery process when the PMTU discovery timer expires.

2.1.5   BGP Minimum Route Advertisement Interval

Setting the BGP MRAI to 0 (with the advertisement-interval 0 command) may generate a higher number of BGP UPDATE messages and increase BGP CPU 25 usage.

2.1.6   BGP Fast-Reset Interval Enhancement

In previous releases, the fast-reset command interval could be configured in seconds only. In Release, the fast-reset command has been updated to include an optional milliseconds keyword. If you include the milliseconds keyword in the fast-reset command string, the interval is interpreted in milliseconds; without the milliseconds keyword, the interval is interpreted in seconds (preserving the backward compatibility of the SmartEdge OS).

2.1.7   SmartEdge BGF Support for IPv4 and IPv6 Payload Traffic

The media address and media port entry size are increased to accommodate both IPv4 and IPv6 addresses (the IPv6 address is 128 bits long, and the IPv4 address is 32 bits long), consuming additional memory on XC and PPA traffic cards.

2.1.8   Changes to DHCPv6 PD Prefix Assignment

In Release 6.3.1, the SmartEdge router supported the configuration of multiple DHCPv6 PD prefixes. In Release 6.4.1, only one DHCPv6 PD prefix is assigned by default unless you use the ipv6 delegated-prefix maximum command to modify the maximum number of DHCPv6 PD prefixes that can be assigned.

In Release 6.3.1, the maximum number of DHCPv6 PD prefixes that could be assigned was 100. In Release 6.4, the maximum number of DHCPv6 PD prefixes that can be assigned is five.

2.1.9   New VSA

Cluster-Partition-ID RADIUS VSA is a new VSA.


Bidirectional Forwarding Detection
border gateway function
Border Gateway Protocol
Dynamic Host Configuration Protocol Version 6
Internet Key Exchange
Internet Protocol Security
Internet Protocol Version 4
Internet Protocol Version 6
Interface and Circuit State Manager
modified deficit round-robin
Minimum Route Advertisement Interval
maximum transmission unit
Prefix Delegation
Protocol Independent Multicast
path maximum transmission unit (PMTU)
Router Configuration Manager
Routing Information Base
Security Association
Virtual Private Network
vendor-specific attribute

Reference List

[1] Installing Release 6.4.1.
[2] Technical Product Description, SmartEdge OS for SmartEdge Routers, Release 6.4.1.