14-2
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
OL-14127-08
Chapter 14 Overview of the Serial SPAs
Supported Features
Supported Features
Note There are some variations in support by SPA model and software release. These differences are identified
here, in the
“Restrictions” section on page 14-4, and in the corresponding configuration chapter for that
SPA.
The following is a list of some of the significant software features supported by the serial SPAs on the
Cisco ASR 1000 Series Routers:
• Software selectable between T1, E1, T3, or E3 framing on each card (ports are configured as all T1,
E1, T3, or E3). Applies to the 2-Port and 4-Port Clear Channel T3/E3 SPA and 8-Port Channelized
T1/E1 SPA.
• Layer 2 encapsulation support:
–
Point-to-Point Protocol (PPP)
–
High-level Data Link Control (HDLC)
–
Frame Relay
• Internal or network clock (selectable per port).
• Online insertion and removal (OIR).
• Hot Standby Router Protocol (HSRP).
• Alarm reporting: 24-hour history maintained, 15-minute intervals on all errors.
• 16- and 32-bit cyclic redundancy checks (CRC) supported (16-bit default).
• Local and remote loopback.
• Bit error rate testing (BERT) pattern generation and detection per port.
• Programmable BERT patterns enhancements.
Note The programmable BERT patterns enhancements are not supported on the 2- and 4-Port T3/E3
SPAs or the 8-Port Channelized T1/E1 SPA.
• Dynamic provisioning—Allows for the addition of new customer circuits within a channelized
interface without affecting other customers.
• Field-programmable device (FPD) upgrades.
• End-to-end FRF.12 fragmentation support (Quantum Flow Processor [QFP] based).
• QFP-based Multilink PPP (MLPPP) and Link Fragmentation and Interleaving (LFI).
• Support for MLPPP across all SPAs.
• Support for MLPPP using any combination of E1, T1, and NxDS0 member links.
• Compressed Real-Time Protocol (cRTP)—8-Port Channelized T1/E1 SPA and 2-Port and 4-Port
Channelized T3 SPAs only.
• T1 features
–
All ports can be fully channelized down to DS0.
–
Data rates in multiples of 56 Kbps or 64 Kbps per channel.
–
Maximum 1.536 Mbps for each T1 port.