Cisco Cisco IOS Software Release 12.2(27)SBC
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ISSU and SSO—DHCP High Availability Features
Glossary
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Cisco IOS Release 12.2(31)SB2
Glossary
CPE—customer premises equipment. Terminating equipment, such as terminals, telephones, and
modems, supplied by the service provider, installed at customer sites, and connected to the network.
modems, supplied by the service provider, installed at customer sites, and connected to the network.
DSLAM—digital subscriber line access multiplexer. A device that connects many digital subscriber
lines to a network by multiplexing the DSL traffic onto one or more network trunk lines.
lines to a network by multiplexing the DSL traffic onto one or more network trunk lines.
ISSU—In Service Software Upgrade. ISSU is a process that allows Cisco IOS software to be updated or
otherwise modified while packet forwarding continues.
otherwise modified while packet forwarding continues.
ODAP—On-Demand Address Pool. ODAPs enable pools of IP addresses to be dynamically increased
or reduced in size depending on the address utilization level. Once configured, the ODAP is populated
with one or more subnets leased from a source server and is ready to serve address requests from DHCP
clients or from PPP sessions.
or reduced in size depending on the address utilization level. Once configured, the ODAP is populated
with one or more subnets leased from a source server and is ready to serve address requests from DHCP
clients or from PPP sessions.
RP—Route Processor. A generic term for the centralized control unit in a chassis
.
SSO—Stateful Switchover. SSO refers to the implementation of Cisco IOS software that allows
applications and features to maintain a defined state between an active and standby RP. When a switching
occurs, forwarding and sessions are maintained. SSO makes an RP failure undetectable to the network.
applications and features to maintain a defined state between an active and standby RP. When a switching
occurs, forwarding and sessions are maintained. SSO makes an RP failure undetectable to the network.
Note
See
for terms not included in this glossary.
Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and
figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and
coincidental.
figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and
coincidental.
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Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity,
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iPhone, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, iQuick Study, LightStream, Linksys, MeetingPlace, MGX, Networkers,
Networking Academy, Network Registrar, PIX, ProConnect, ScriptShare, SMARTnet, StackWise, The Fastest Way to Increase Your Internet Quotient,
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