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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Hardware Installation Guide
OL-14126-12
Chapter 3 Overview: Cisco ASR 1000 Series Aggregation Services Routers SPAs
Bandwidth Oversubscription
Cisco ASR1000-SIP10 Oversubscription Guidelines
The total available bandwidth in your router ultimately depends on the features that you have enabled,
and the combination of hardware installed. This section describes some of the basic guidelines that you
can use to plan for a possible oversubscription on the Cisco ASR1000-SIP10.
Each Cisco ASR1000-SIP10 supports 4 single-height SPAs. The chassis models of the Cisco ASR 1000
Series Aggregation Services Routers support a different maximum number of SIPs as follows:
• Cisco ASR 1002 and Cisco ASR1002-Fixed Routers — 1 embedded SIP
• Cisco ASR 1004 Router — 2 SIPs
• Cisco ASR 1006 Router — 3 SIPs
Each Cisco ASR1000-SIP10 has a 10 Gbps link to the Embedded Services Processor (ESP). Therefore,
there is an aggregate bandwidth limit—the sum of the total SPA bandwidth installed in the SIP—of 10
Gbps per SIP. This limit can be exceeded with the installation of some combinations of SPAs. See
Table 3-1 for individual SPA bandwidth values. This aggregate bandwidth is then subject to the
maximum bandwidth limitations of the ESP (5, 10, or 20 Gbps) depending on the ESP model installed.
Cisco ASR1000-SIP40 Oversubscription Guidelines
The total available bandwidth in your router ultimately depends on the features that you have enabled,
and the combination of hardware installed. However, this section describes some of the basic guidelines
that you can use to plan for a possible oversubscription on the Cisco ASR1000-SIP40.
Each Cisco ASR1000-SIP40 supports:
2-Port Clear Channel T3/E3 SPA 44.736 Mbps (T3)
34.368 Mbps (E3)
2 89.47 Mbps (T3)
68.74 Mbps (E3)
4-Port Clear Channel T3/E3 SPA 44.736 Mbps (T3)
34.368 Mbps (E3)
4 178.94 Mbps (T3)
137.47 Mbps (E3)
4-Port Serial SPA 128 Kbps (EIA/TIA-232)
8064 Kbps (V.35,
EIA/TIA-449, -530, and
-530a)
2 Mbps (X.21)
48 Mbps
4
CEoP (Circuit Emulation over Packet) SPA
1-Port Channelized OC-3 ATM CEoP SPA 155 Mbps 1 155 Mbps
2-Port Channelized T3/E3 ATM CEoP SPA 44.736 Mbps (T3) 2 89.47 Mbps (T3)
24-Port Channelized T1/E1 ATM CEoP SPA 1.544 Mbps (T1)
2.048 Mbps (E1)
24 37.06 Mbps (T1)
49.15 Mbps (E1)
1. Total bandwidth value assumes two OC-12c/STM-4 optics modules.
2. Total bandwidth value assumes four OC-12c/STM-4 optics modules.
3. Total bandwidth value assumes eight OC-12c/STM-4 optics modules.
4. Total bandwidth value assumes four ports of maximum bandwidth.
Table 3-2 SPA Bandwidth Capacity (continued)
SPA Per-Port Bandwidth Number of Ports Total Bandwidth
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