This section lists the changes in behavior of Junos OS features and changes in the syntax of Junos OS statements and commands in Junos OS Release 20.3R1 for MX Series routers.
New output flag for the show bridge mac-ip table command 9MX series)—The Layer 2 address learning daemon (l2ald) does not send updated MAC and IP address advertisements to the routing protocol daemon (rpd) when an IRB interface is disabled in an EVPN-VXLAN network. We’ve added the NAD flag in the output of the show bridge mac-ip-table command to identify the disabled IRB entries in which the MAC and IP address advertisement will not be sent.
[See show bridge mac-ip-table.]
Change in show oam ethernet connectivity-fault-management mep-statistics command (MX Series)—You can now view the real-time statistics for continuity check messages (CCM) inline sessions for MPC10E (MPC10E-10C-MRATE and MPC10E-15C-MRATE) and MPC11E (MX2K-MPC11E) line cards only when you execute the show oam connectivity-fault-management mep-statistics local-mep local-mep-id maintanance-association name twice in immediate succession. If you execute the command once, the values are incorrectly displayed.
MS-MPC and MS-MIC service package (MX240, MX480, MX960, MX2020, MX2010, and MX2008)—PICs of Multiservices MPCs (MS-MPCs) and Multiservices MICs (MS-MICs) do not support any service package than other extension-provider. These PICs always come up with the extension-provider service-package, irrespective of the configuration. If you try to configure any other service package, for these PICs by using the command set chassis fpc slot-number pic pic-number adaptive-services service-package, an error is logged. Use the show chassis pic fpc-slot slot pic-slot slot command to view the service package details of the PICs of MS-MPC and MS-MIC.
Change in support for interface-transmit-statistics statement (MX Series)--You cannot configure aggregated Ethernet interfaces to capture and report the actual transmitted load statistics by using the interface-transmit-statistics statement. Aggregated Ethernet interfaces do not support reporting of the transmitted load statistics. The interface-transmit-statistics statement is not supported in the aggregated Ethernet interfaces hierarchy. In earlier releases, the interface-transmit-statistics statement was available in the aggregated Ethernet interfaces hierarchy but not supported.
Interfaces and Chassis
Change in support for interface-transmit-statistics statement—You cannot configure aggregated Ethernet interfaces to capture and report the actual transmitted load statistics by using the interface-transmit-statistics statement. Aggregated Ethernet interfaces do not support reporting of the transmitted load statistics. In Junos OS Release 20.3R1, the interface-transmit-statistics statement is not supported in the aggregated Ethernet interfaces hierarchy. In earlier releases, the interface-transmit-statistics statement was available in the aggregated Ethernet interfaces hierarchy but not supported.
Junos OS, XML, API, and Scripting
Changes to Junos XML RPC request tag names (ACX Series, EX Series, MX Series, PTX Series, QFX Series, and SRX Series)—We've updated the Junos XML request tag name for some operational RPCs to ensure consistency across the Junos XML API. Devices running Junos OS still accept the old request tag names, but we recommend that you use the new names going forward. The changes include:
Most, but not all, request tag names that start with
getin the name.
Uppercase characters are converted to lowercase.
Advertising /32 secondary loopback addresses to Traffic Engineering Database (TED) as prefixes (ACX Series, EX Series, MX Series, PTX Series, QFX Series, and SRX Series)—In Junos OS Release, multiple loopback addresses export into lsdist.0 and lsdist.1 routing tables as prefixes. This eliminates the issue of advertising secondary loopback addresses as router-ids instead of prefixes. In earlier Junos OS releases, multiple secondary loopback addresses in TED were added into lsdist.0 and lsdist.1 routing tables as part of node characteristics and advertised them as the router-id.
New option for configuring delay in IPsec SA installation—In Junos OS Release 20.3R1, you can configure the natt-install-interval seconds option under the [edit services ipsec-vpn rule rule-name term term-name then dynamic] hierarchy to specify the duration of delay in installing IPSec security association (SA) in a NAT-T scenario soon after the IPsec SA negotiation is complete. The default value is 0 seconds.
Subscriber Management and Services
Improved tunnel session limits display (MX Series)—Starting in Junos OS Release 20.3R1, the show services l2tp tunnel extensive command displays the configured value for maximum tunnel sessions. On both the LAC and the LNS, this value is the minimum from the global chassis value, the tunnel profile value, and the value of the Juniper Networks VSA, Tunnel-Max-Sessions (26–33). On the LNS, the configured host profile value is also considered.
In earlier releases, the command displayed the value 512,000 on the LAC and the configured host profile value on the LNS.
Command to view summary information for resource monitor (EX9200 line of Ethernet switches and MX Series routers)—The show system resource-monitor command enables you to view many statistics about the use of memory resources for all line cards or for a specific line card in the device. It also displays information about the status of load throttling, which manages how much memory is used before the device acts to reduce consumption.