Spa Architecture - Cisco ASR 1000 Series Software Configuration Manual
Aggregation services routers sip and spa, cisco ios xe everest 16.5
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Also See for ASR 1000 Series:
- Configuration manual (442 pages) ,
- Replacing (120 pages) ,
- Common criteria operational user guidance and preparative procedures (72 pages)
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SPA Architecture
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
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. Qualified users can establish an account on Cisco.com by following the
directions found at this URL:
https://tools.cisco.com/RPF/register/register.do
SPA Architecture
This section provides an overview of the data path for the ATM SPAs, for use in troubleshooting and
monitoring. The following figure shows the data path for ATM traffic as it travels between the ATM optical
connectors on the front panel of the ATM SPA to the backplane connector that connects the SPA to the SIP.
Figure 5: ATM SPA Data Architecture
LFI processing is not supported on the Cisco ASR 1000 Series Aggregation Services Routers.
Note
Path of Cells in the Ingress Direction
The following steps describe the path of an ingress cell as it is received from the ATM network and converted
to a data packet before transmission through the SIP to the router's processors for switching, routing, or further
processing:
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS
XE Everest 16.5
54
cco-locksmith@cisco.com
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Overview of the ATM SPAs
OL-14127-17
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Troubleshooting
