New Software Features in Cisco IOS XE Release 3.18S
The following features are introduced in Cisco IOS Release 3.18S.
BGP PIC Support for TDM Pseudowires
Starting Cisco IOS XE Release 3.18S, BGP PIC is supported for all pseudowires on the Cisco ASR 900 RSP2 module.
Starting Cisco IOS XE Release 3.18S, BGP PIC is supported with MPLS Traffic-engineering in the core on the Cisco ASR 900 RSP1 and RSP2 modules.
For information, see Configuring Pseudowire.
EtherChannel Min-Links Feature
Effective with Cisco IOS XE Release 3.18S, the EtherChannel Min-Links feature is supported on LACP EtherChannels. This feature allows you to configure the minimum number of member ports that must be in the link-up state and bundled in the EtherChannel for the port channel interface to transition to the link-up state.
For more information, see Carrier Ethernet Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 900 Series)
LACP 1:1 Fast Switchover Support
Effective with Cisco IOS XE Release 3.18S, the LACP 1:1 redundancy feature provides an EtherChannel configuration with one active link and fast switchover to a hot standby link.
For this feature, the LACP EtherChannel must contain exactly two links, of which only one is active.
For more information, see Carrier Ethernet Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 900 Series)
Phase Profile G8275.1
With upcoming technologies like LTE-TDD, LTE-A CoMP, LTE-MBSFN and Location-based services, eNodeBs (base station devices) are required to be accurately synchronized in time and phase. Having GNSS systems at each node is not only expensive, but also introduces vulnerabilities.
Effective with Cisco IOS XE Release 3.18S, Cisco ASR 903 routers with RSP2 module support the G.8275.1 telecom profile. This profile targets accurate time and phase distribution and requires boundary clocks at every node in the network.
For more information, see the G.8275.1 Telecom Profile document at Cisco ASR 900 Router Series Configuration Guide
STM-4 TSoP
Effective with Cisco IOS XE Release 3.18S, STM-4 TSoP is supported on ASR 900 RSP2 Module.
STM-4 TSoP is compatible with the below SFPs supported on the OC-12 interface module:
- ONS-SI-622-L2—For 40km cable length, use 2 dB attenuator; short distance use 10 dB attenuator to avoid receiver overload.
- ONS-SI-622-L1—For 40km cable length, no attenuator; short distance use 10 dB attenuator to avoid receiver overload.
- ONS-SI-622-I1—For 15km cable length, use 2 dB attenuator; short distance use 8 dB attenuator to avoid receiver overload.
For more information, see Time Division Multiplexing Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 900 Series)
Larger String for EVC VLAN Encapsulation
Effective with Cisco IOS XE Release 3.18S, you can add or remove one or more VLAN tag values for matching criteria. You can use the encapsulation dot1q add command with show run command when the encapsulation configuration command is more than the terminal width and ethernet service multi-line command is configured or if the encapsulation command is more than 255 characters.
For more information, see Carrier Ethernet Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 900 Series)
Ethernet Loopback with Other Types of Encapsulation
Effective with Cisco IOS XE Release 3.18S, Ethernet loopback for default and untagged EFPS is available.
For more information, see L ayer 2 Configuration Guide, Cisco IOS XE Release (ASR 900 Series)