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Changes in Behavior and Syntax

This section lists the changes in behavior of Junos OS features and changes in the syntax of Junos OS statements and commands from Junos OS Release 15.1F5 for the MX Series and T Series.

General Routing

  • Modified output of the clear services sessions | display xml command (MX Series)—In Junos OS Release 14.1X55-D30, the output of the clear services sessions | display xml command is modified to include the <sess-marked-for-deletion> tag instead of the <sess-removed> tag. In releases before Junos OS Release 14.1X55-D30, the output of this command includes the <sess-removed> tag. The replacement of the <sess-removed> tag with the <sess-marked-for-deletion> tag aims at establishing consistency with the output of the clear services sessions command that includes the field Sessions marked for deletion.

IPv6

  • IPv6 addresses with padded zeros in MIC or MS-MPC system log messages (MX Series, and T Series)—Starting with Junos OS Release 15.1F5, all system log messages originating from MIC or MS-MPC line cards display padded zeros in IPv6 addresses to make them compatible with MS-DPC line cards. Earlier, the system log messages from MIC or MS-MPC line cards displayed IPv6 addresses with ’::’ instead of padded zeros.

MPLS

  • Inline BFD support on IRB interfaces (MX Series routers with MPCs or MICs)—Starting with Junos OS Release 15.1F4, the inline BFD sessions transmitted or received from FPC hardware are supported on integrated routing and bridging (IRB) interfaces. This enhancement is available only on MX Series routers with MPCs/MICs that have configured the enhanced-ip option.

Network Management and Monitoring

  • New 64-bit counter of octets for interfaces (MX Series, and T Series)—Starting with Release 15.1F4, Junos OS supports two new Juniper Networks enterprise-specific Interface MIB Extension objects—ifHCIn1SecOctets and ifHCOut1SecOctets—that act as 64-bit counters of octets passing through an interface.
  • Enhancement for SONET interval counter (MX Series, and T Series)—Starting with Junos OS Release 15.1F5, only the Current Day Interval Total output field in the show interfaces interval command for SONET interfaces is reset after 24 hours. In addition, the Previous Day Interval Total output field displays the last updated time in hh:mm .

    [See show interfaces interval.]

Routing Protocols

  • Support for RFC 5492, Capabilities Advertisement with BGP-4 —Beginning with Junos OS Release 15.1F5, BGP sessions can be established with legacy peers that do not support optional parameters, such as capabilities. In earlier Junos OS releases from 15.1R1 through 15.1R3 and 15.1F1 through 15.1F4, BGP sessions with legacy routers without BGP capabilities were not supported. Starting with Junos OS Release 15.1F5, support for BGP sessions with legacy routers without BGP capabilities is restored.

Services Applications

  • Anycast address 0/0 must not be accepted in the from-clause of Detnat rule (MX Series)—Starting with Junos OS release 15.1F5, for multiservices (ms-) interfaces, anycast configuration is not allowed as the source-address when translation type is deterministic NAT.
  • Change to show services nat pool command output—Starting in Junos OS Release 15.1F5, the show services nat pool command output includes this new field: AP-P port limit allocation errors. When AP-P is configured, this field indicates the number of out-of-port errors that are due to a configured limit for the number of allocated ports in the limit-ports-per-address statement at the [edit services nat pool nat-pool-name] hierarchy level.

Subscriber Management and Services (MX Series)

  • Local DNS configurations available when authentication order is set to none (MX Series)—Starting in Junos OS Release 15.1F2, subscribers get the DNS server addresses when both of the following are true:
    • The authentication order is set to none at the [edit access profile profile-name authentication-order] hierarchy level.
    • A DNS server address is configured locally in the access profile with the domain-name-server, domain-name-server-inet, or domain-name-server-inet6 statement at the [edit access profile profile-name] hierarchy level.

    In earlier releases, subscribers get an IP address in this situation, but not the DNS server addresses.

  • Support for longer CHAP challenge local names (MX Series)—Starting in Junos OS Release 15.1F4, the supported length of the CHAP local name is increased to 32 characters. In earlier releases, only eight characters are supported even though the CLI allows you to enter a longer name. You can configure the name with the local-name statement at the [edit dynamic-profiles profile-name interfaces pp0 unit “$junos-interface-unit” ppp-options] or [edit dynamic-profiles profile-name interfaces "$junos-interface-ifd-name" unit “$junos-interface-unit” ppp-options] hierarchy levels. The maximum length of the local name for PAP authentication remains unchanged at eight characters.
  • Increased maximum limits for accounting and authentication retries and timeouts (MX Series)—Starting in Junos OS Release 15.1F5, you can configure a maximum of 100 retry attempts for RADIUS accounting (accounting-retry statement) or authentication (retry statement). In earlier releases, the maximum value is 30 retries. You can also configure a maximum timeout of 1000 seconds for RADIUS accounting (accounting-timeout statement) or authentication (timeout statement). In earlier releases, the maximum timeout is 90 seconds.

    Note: The maximum retry duration (the number of retries times the length of the timeout) cannot exceed 2700 seconds. An error message is displayed if you configure a longer duration.

System Management

  • Change to process health monitor process (MX Series)—Starting in Junos OS Release 15.1F5, the process health monitor process (pmond) is enabled by default on the Routing Engines of MX Series routers, even if no service interfaces are configured. To disable the pmond process, include the disable statement at the [edit system processes process-monitor] hierarchy level.

Virtual Chassis

  • SNMP MIB walk on MX Series Virtual Chassis —Starting with Junos OS Release 15.1F5, snmp mib walk operations no longer return invalid PCMCIA card information for Routing Engines on MX Series Virtual Chassis.

VPNs

  • Clear all Internet key exchange (IKE), traffic encryption key (TEK), key encryption key (KEK), and security associations (SAs) for group VPN (MX Series)—The clear security group-vpn member group CLI command has been introduced in the Release 15.1F3 of Junos OS for MX Series routers to clear all Internet key exchange (IKE), traffic encryption key (TEK), key encryption, and key (KEK) security associations (SAs) for a group VPN.
    user@host> clear security group-vpn member group

Related Documentation

Modified: 2016-09-29