Cisco ASR 1000 Series Aggregation Services Routers SIPs and SPAs are a carrier card and port adapter architecture that increases modularity, flexibility, and density across Cisco routers for network connectivity. This section describes the SIPs and SPAs and provides some guidelines for their use.
SPA Interface Processors
The following list describes some of the general characteristics of a SIP:
A SIP is a carrier card that inserts into a router slot like a line card. It provides no network connectivity on its own.
A SIP contains one or more subslots, which are used to house one or more SPAs. The SPA provides interface ports for network connectivity.
During normal operation, the SIP should reside in the router fully populated either with functional SPAs in all subslots, or with a blank filler plate (SPA-BLANK=) inserted in all empty subslots.
SIPs support online insertion and removal (OIR) with SPAs inserted in their subslots. SPAs also support OIR and can be inserted or removed independently from the SIP.
Note Fully populate all slots and subslots with blank filler plates or functional SPAs for maximum efficiency of the cooling system.
Shared Port Adapters
The following list describes some of the general characteristics of a SPA:
A SPA is a modular type of port adapter that inserts into a subslot of a compatible SIP carrier card to provide network connectivity and increased interface port density. A SIP can hold one or more SPAs, depending on the SIP type.
Some SPAs provide services rather than network connectivity, and can be inserted into the subslots of a compatible SIP, for example, the Cisco WebEx Node for ASR 1000 Series that provides WebEx meeting services, and the DSP SPA that provides voice transcoding and transrating capabilities.
– Double-height SPA—Inserts into two single, vertically aligned SIP subslots.
Figure 1-1 Single-Height and Double-Height SPA Sizes
Figure 1-2 Horizontal and Vertical Chassis Slot Orientation for SPAs
Each SPA provides a certain number of connectors, or ports, that are the interfaces to one or more networks. These interfaces can be individually configured using the Cisco IOS command-line interface (CLI).
Either a blank filler plate or a functional SPA should reside in every subslot of a SIP during normal operation to maintain cooling integrity. Blank filler plates are available in single-height form only.
SPAs support online insertion and removal (OIR). They can be inserted or removed independently from the SIP. SIPs also support OIR with SPAs inserted in their subslots.
Note For more information about the support for different SIPs and SPAs, refer to the “Release History” section in the “Overview of the SIP” chapter of the Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide.
Table 1-1 SIP and SPA Compatibility for ATM SPAs
1-Port Clear Channel OC-3 ATM SPA
3-Port Clear Channel OC-3 ATM SPA
1-Port Clear Channel OC-12 ATM SPA
Table 1-2 SIP and SPA Compatibility for Ethernet SPAs
3.Restriction: The SPA-1CHOC3-CE-ATM is not supported on the Cisco ASR 1001 Router (1 RU chassis), but supported on all other ASR 1000 chassis. All the other ASR 1000 Routers support the SPA-1CHOC3-CE-ATM for Circuit Emulation application; but not ATM applications. Effective from Cisco IOS XE Release 3.3.0S, the SPA-1CHOC3-CE-ATM is supported only with these software images: ADVANCED ENTERPRISE SERVICES, ADVANCED ENTERPRISE W/O CRYPTO, ADVANCED IP SERVICES, or ADVANCED IP SERVICES W/O CRYPTO. The SPA-1CHOC3-CE-ATM is not supported with these software images: IP BASE and IP BASE W/O CRYPTO.
4.Restriction: Effective from Cisco IOS XE Release 3.4.0S, the SPA-2CHT3-CE-ATM is supported on all the Cisco ASR 1000 Series Routers except on the Cisco ASR 1001 Router. However, the SPA-2CHT3-CE-ATM supports only the T3 ATM mode in Cisco IOS XE Release 3.4.0S and not the Circuit Emulation (CEM) mode. Maximum Virtual Circuits supported are 1024. Interim Local Management Interface (ILMI) 1.0 is not supported. IETF RFC 2364 and 2516 for Point-to-Point Protocol (PPP) over ATM is not supported. IETF RFC 1577 support for classical IP and Address Resolution Protocol (ARP) over ATM is not supported. ATM Forum UNI 3.0, 3.1, and 4.0 is not supported. Effective from Cisco IOS XE Release 3.5.0S, the SPA-2CHT3-CE-ATM supports ATM on clear-channel E3 SPA. All the existing ATM features are supported in the E3 mode. Effective from Cisco IOS XE Release 3.8.0S, the SPA-2CHT3-CE-ATM is supported on the Cisco ASR 1001 Router. The SPA-2CHT3-CE-ATM on the Cisco ASR 1001 Router supports both the T3 and E3 ATM modes and does not support the CEM mode.
5.Restriction: The SPA-24CHT1-CE-ATM is not supported on the Cisco ASR 1001 Router (1 RU chassis), but supported on all other ASR 1000 chassis. Effective from Cisco IOS XE Release 3.4.0S, the SPA-24CHT1-CE-ATM supports only the CEM mode. Effective from Cisco IOS XE Release 3.4.0S, the SPA-24CHT1-CE-ATM is supported only with these software images: ADVANCED ENTERPRISE SERVICES, ADVANCED ENTERPRISE W/O CRYPTO, ADVANCED IP SERVICES, or ADVANCED IP SERVICES W/O CRYPTO. The SPA-24CHT1-CE-ATM is not supported with these software images: IP BASE and IP BASE W/O CRYPTO.
Modular Optics Compatibility
Some SPAs implement small form-factor pluggable (SFP) optical transceivers to provide network connectivity. An SFP module is a transceiver device that mounts into the front panel to provide network connectivity.
Cisco qualifies the SFP modules that can be used with SPAs.
Note The SPAs will only accept the SFP modules listed as supported in this document. An SFP module check is run every time an SFP module is inserted into a SPA and only SFP modules that pass this check will be usable.