Cisco 7600 Series Router SIP, SSC, and SPA Software Configuration Guide

Overview of the Serial SPAs

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This chapter provides an overview of the release history, features, and supported MIBs for the following SPAs:

• Cisco 7600 SIP-200 with the 2- and 4-Port T3/E3 SPAs, the 8-Port Channelized T1/E1 SPA, t he 1-Port Channelized OC-3/STM-1 SPA, and the -2 or 4-Port CT3 SPA
• Cisco 7600 SIP-400 with the 1-Port Channelized OC-12/STM-4 SPA
• Cisco 7600 SIP-400 with the 4-Port Serial Interface SPA.

This chapter includes the following sections:

• Release History
• Supported Features
• Restrictions
• SPA Features
• Supported MIBs
• Displaying the SPA Hardware Type

Release History

Supported Features

This section provides a list of some of the primary features supported by the Cisco 7600 SIP-200 and SPA hardware and software.

• Online insertion and removal (OIR).
• Supports up to four single-height or two double-height Shared Port Adaptors (SPAs).
• Field Programmable Gate Array (FPGA) upgrade support.
• The SIP-200 supports the standard FPGA upgrade methods for the Cisco 7600 series router.

Restrictions

This section provides a list of Cisco 7600 SIP-200 configuration restrictions.

Note For other SIP-specific features and restrictions see also Chapter 4, “Overview of the SIPs and SSC” in this guide.

• On a 2-port or 4-port Channelized T3 SPA, when one of the T3 ports is configured as DS3 clear channel interface and the other T3s are configured with large number (greater than or equal to 400) of low bandwidth channels (NxDS0, N=1, 2, 3, or 4), the DS3 clear channel interface is not able to run at 100% DS3 line rate when those low bandwidth channels are idle (that is, not transmitting or receiving packets). This issue does not occur if those low bandwidth channels are not idle.
• On a 2-Port and 4-Port Channelized T3 SPA or 1-Port Channelized OC-3/STM-1 SPA, the maximum number of channels is limited to 1023 per SPA.
• On a 2-Port and 4-Port Channelized T3 SPA or 1-Port Channelized OC-3/STM-1 SPA, the maximum number of FIFO buffers is 4096. The FIFO buffers are shared among the interfaces; how they are shared is determined by speed. If all the FIFO buffers have been assigned to existing interfaces, a new interface cannot be created, and the "%Insufficient FIFOs to create channel group" error message is seen. FIFO allocation information is provided in Table 17-1 .
  
  To find the number of available FIFO buffers, use the show controller t3 command:

• On the 1-Port Channelized OC-12/STM-4 SPA, the SDH, E1/E3 modes are not supported.
• On the 1-Port Channelized OC-12/STM-4 SPA, the MFR, FRF.12 (in sync with other channelized SPAs on SIP400) is not supported.
• On the 4-Port Serial Interface SPA with Cisco 7600 SIP- 400, the following features are not supported:

– Multilink Point to Point Protocol (MLPPP)

– Multilink Frame Relay (MLFR)

– Frame Relay Forum (FRF).12

– Real Time Protocol (RTP) header compression

– Data compression formats such as PPP STAC compression, FRF.9, data compression over frame relay, and Microsoft Point-to-Point Compression (MPPC).

Note Effective from Cisco IOS Release 15.1(3)S and 12.2(33)SRE05, the SPA-1xCHOC12/DS0 boots up with admin down status and the original SPA status is restored after one second of the SPA bootup. Please wait for a second after the log message "SPA_OIR-6-ONLINECARD: SPA (SPA-1XCHOC12/DS0) online in subslot" is displayed, to configure the SPA.

SPA Features

The following is a list of some of the significant software features supported by the 2- and 4-Port T3/E3 SPA, the 8-Port Channelized T1/E1 SPA, the 1-Port Channelized OC-3/STM-1 SPA, and the 2- and 4-Port CT3 SPAs.

• 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- and 4-Port 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

Note On the 8-Port Channelized T1/E1 SPA, BERT is not supported.

• Programmable BERT patterns enhancements

Note On the 8-Port Channelized T1/E1 SPA, the programmable BERT patterns enhancements are not supported.

Note On the 2- and 4-Port T3/E3 SPAs, the programmable BERT patterns enhancements are:
- supported when the framing mode is M13 or C-bit.
- not supported when the framing mode is bypass.

• Dynamic provisioning—Dynamic provisioning allows for the addition of new customer circuits within a channelized interface without affecting other customers.
• FPD (field programmable device upgrades)
• End-to-end FRF.12 fragmentation support
• Link Fragmentation and Interleaving (LFI) support
• Compressed Real-Time Protocol (cRTP)—8-Port Channelized T1/E1 SPA and 2-Port and 4-Port Channelized T3 SPA only. For more information about configuring cRTP, see the “Configuring Compressed Real-Time Protocol” section.
• Network Clocking and the Synchronization Status Message(SSM) functionality for the Channelized SPAs in a Cisco 7600 SIP-400 only. The Channelized SPAs supporting this feature for Cisco IOS Release 15.0(1)S are:

– 8-Port Channelized T1/E1 SPA

– 1-Port Channelized OC3/STM-1 SPA

The Channelized SPA supporting this feature for Cisco IOS Release 15.1(1)S is:

– 1-Port Channelized OC-12/STM-4 SPA

For more information on configuring the network clock see, Configuring Boundary Clock for 2-Port Gigabit Synchronous Ethernet SPA on Cisco 7600 SIP-400

• 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

– D4 Superframe (SF) and Extended Superframe (ESF) support for each T1 port

– ANSI T1.403 and AT&T TR54016 CI FDL support

– Internal and receiver recovered clocking modes

– Short haul and long haul channel service unit (CSU) support

– Binary eight-zero substitution (B8ZS) and alternate mark inversion (AMI) line encoding

Note B8ZS and AMI line encoding are not configurable for TW on the 2-Port and 4-Port Channelized T3 SPA.

– Support for Multilink Point to Point Protocol (MLPPP) for full T1s on the same SPA (hardware based) and across SPAs (software based)

– Support for Multilink Frame Relay (MLFR)

• E1 features

– Maximum 1.984 Mbps for each E1 port in framed mode and a 2.048 Mbps in unframed E1 mode

– All ports can be fully channelized down to DS0

– Compliant with ITU G7.03, G.704, ETSI and ETS300156

– Internal and receiver recovered clocking modes

– Hi-density bipolar with three zones (HDB3) and AMI line encoding

– Support for MLPPP for full E1s on the same SPA (hardware based) and across SPAs (software based).

– Support for MLFR

• E3 features

– Full-Duplex connectivity at E3 rate (34.368 MHz)

– Supports ITU-T G.751 or G.832 framing (software selectable)

– HD3B line coding

– Compliant with E3 pulse mask

– Line build-out: configured for up to 450 feet (135 m) of type 728A or equivalent coaxial cable

– Loopback modes: data terminal equipment (DTE), local, dual, and network

– E3 alarm/event detection (once per second polling)

- Alarm indication signal (AIS)

- Loss of frame (LOF)

- Remote alarm indication (RAI)

– Subrate and scrambling features for these data service unit (DSU) vendors:

- Digital Link

- ADC Kentrox

• T3 features

– Binary 3-zero substitution (B3ZS) line coding

– Compliant with DS3 pulse mask per ANSI T1.102-1993

– DS3 far-end alarm and control (FEAC) channel support

– Full-Duplex connectivity at DS3 rate (44.736 MHz)

– 672 DS0s per T3

– Loopback modes: DTE, local, remote, dual, and network

– C-bit or M23 framing (software selectable)

– Line build-out: configured for up to 450 feet (135 m) of type 734A or equivalent coaxial cable

– DS3 alarm/event detection (once per second polling)

- AIS

- Out of frame (OOF)

- Far-end receive failure (FERF)

– Generation and termination of DS3 Maintenance Data Link (MDL) in C-bit framing

– Full FDL support and FDL performance monitoring

– Subrate and scrambling features for these DSU vendors:

- Digital Link

- ADC Kentrox

- Adtran

- Verilink

- Larscom

Note On a 2-port or 4-port Channelized T3 SPA, when one of the T3 ports is configured as DS3 clear channel interface and the other T3s are configured with large number (greater than or equal to 400) of low bandwidth channels (NxDS0, N=1, 2, 3, or 4), the DS3 clear channel interface is not able to run at 100% DS3 line rate when those low bandwidth channels are idle (that is, not transmitting or receiving packets). This issue does not occur if those low bandwidth channels are not idle.

The following features are supported on the 1-Port Channelized OC-12/STM-4 SPA:

• CCAT POS, DS3/E3, VCAT POS/Ethernet interfaces
• Maximum of 128 VCAT groups (VCG)
• Each VCG configurable for HDLC, GFP Framing (Layer 1)
• Each VCG can carry POS (hdlc/ppp/frame-relay) or Ethernet payload (Layer 2)
• Bandwidth on each VCG can be NxSTS-1/NxVT1.5/NxVT2
• Maximum of 48 high-order (STS-1) members in a VCG
• Maximum of 64 low-order (VT1.5/VT2) members in a VCG
• Maximum of 336 VT1.5/252 VT2 members per SPA
• Link Capacity Adjustment Scheme (LCAS)

These are the major features supported for the 4-Port Serial SPA on Cisco 7600 SIP-400:

• HDLC
• PPP
• Frame Relay
• IP packet switching
• 8 Mbps in synchronous mode per port on V.35/RS-449 cables in HDLC mode and 4 Mbps in firmware multilink mode. For all other cables, 128 KBPS in synchronous mode.
• Clock signal configuration

– For DTE: Loop clocking, normal clocking, and inversion.

– For DCE: Internal clocking.

• Data signal inversion
• Non Return to Zero (NRZ) or Non Return to Zero Inverted (NRZI) encoding
• Pulse time manipulation
• Full duplex mode communication
• Line and local loop back

For configuration information for 4-Port Serial SPA, see Chapter 23, “Configuring the 4-Port Serial Interface SPA”.

Supported MIBs

The following MIBs are supported in Cisco IOS Release 12.2S for the serial SPAs on the Cisco 7600 series router.

All serial SPAs:

• CISCO-ENTITY-ALARM-MIB
• CISCO-CLASS-BASED-QOS-MIB
• CISCO-ENVMON-MIB (For NPEs, NSEs, line cards, and SIPs only)
• CISCO-ENTITY-ASSET-MIB
• CISCO-ENTITY-FRU-CONTROL-MIB
• CISCO-ENTITY-SENSOR-MIB
• ENTITY-MIB
• IF-MIB
• RMON-MIB
• MPLS-LDP-MIB
• MPLS-LSR-MIB
• MPLS-TE-MIB
• MPLS-VPN-MIB

2- and 4-Port T3/E3 SPAs:

• DS3/E3 MIB

8-Port Channelized T1/E1 SPA:

• DS1/E1 MIB

2- or 4-Port CT3 SPA:

• DS1-MIB
• DS3-MIB
• CISCO-FRAME-RELAY-MIB
• IANAifType-MIB
• RFC1381-MIB

1-Port Channelized OC-12/STM-4 SPA:

• Cisco Optical MIB
• SONET MIB (RFC 2558)
• Performance Statistics for Timed Intervals (RFC 1595)
• SONET/SDH MIB (RFC 1595)
• DS-3/E3 MIB (RFC 1407)
• DS1/E1 MIB (RFC1406)
• MIB-II
• Ethernet MIB
• Cisco Extended Asset MIB

For more information about MIB support on the Cisco 7600 series router, refer to the Cisco 7600 Series Internet Router MIB Specifications Guide found at the following URL:

http://www.cisco.com/univercd/cc/td/doc/product/core/cis7600/7600mibs/index.htm

To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:

http://tools.cisco.com/ITDIT/MIBS/servlet/index

If Cisco MIB Locator does not support the MIB information that you need, you can also obtain a list of supported MIBs and download MIBs from the Cisco MIBs page at the following URL:

http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml

To access Cisco MIB Locator, you must have an account on Cisco.com. If you have forgotten or lost your account information, send a blank e-mail to cco-locksmith@cisco.com. An automatic check will verify that your e-mail address is registered with Cisco.com. If the check is successful, account details with a new random password will be e-mailed to you.

Displaying the SPA Hardware Type

To verify the SPA hardware type that is installed in your Cisco 7600 series router, you can use the show diagbus command or the show interface command (once the interface has been configured). There are several other commands on the Cisco 7600 series router that also provide SPA hardware information.

Table 17-2 shows the hardware description that appears in the show command output for each type of SPA that is supported on the Cisco 7600 series router.

Virtual Tributary Alarms

Seven circuit emulation alarm types on the virtual tributary are introduced with the
Cisco IOS Release 12.2(33)SRE and Cisco IOS Release 12.2(33)SRC4 on the 1-Port Channelized STM-1/OC-3 SPA. The alarm details are displayed with the show controller output on the 1-Port Channelized STM-1/OC-3 SPA.

These are described in the following table: