- accept-lifetime
- address-family
- advertise-labels
- affinity (LSP attribute configuration mode)
- affinity (TE interface configuration mode)
- allowas-in
- area
- as-override
- authentication challenge
- authentication key-chain
- authentication lifetime
- authentication type
- authentication window-size
- autoroute announce
- auto-bw (LSP attribute configuration mode)
- auto-bw (TE interface configuration mode)
- auto-bw timers
- autonomous-system
A Commands
This chapter describes the Cisco NX-OS Multiprotocol Label Switching commands that begin with A.
accept-lifetime
To configure the accept lifetime of a key, use the accept-lifetime command. To return to the default setting, use the no form of this command.
accept-lifetime {start-time | local start-time} {duration seconds | end-time | infinite}
no accept-lifetime {start-time | local start-time} {duration seconds | end-time | infinite}
Syntax Description
Defaults
Command Modes
Keychain key configuration mode
Command History
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Usage Guidelines
If you enter the no accept-lifetime command, the associated password is valid for authenticating incoming TCP segments.
Examples
This example shows how to configure the accept lifetime of a key:
Related Commands
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Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP). |
address-family
To configure an address family type that pertains to BGP, use the address-family command. To return to the default setting, use the no form of this command.
address-family {ipv4 {multicast | unicast}} {ipv6 {multicast | unicast | labeled unicast }} {vpnv4 | vpnv6 {unicast }}
no address-family {ipv4 {multicast | unicast}} {ipv6 {multicast | unicast | labeled unicast }} {vpnv4 | vpnv6 {unicast }}
Syntax Description
Defaults
Command Modes
Command History
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Usage Guidelines
Examples
This example shows how to configure IPV4 multicast address family:
This example shows how to configure IPV6 unicast address family:
This example shows how to configure unicast sub address family:
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Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP). |
advertise-labels
To configure label advertisements, use the advertise-labels command. To return to the default setting, use the no form of this command.
advertise-labels [for prefix-list [to prefix-list] | interface interface number]
no advertise-labels [for prefix-list [to prefix-list] | interface interface number]
Syntax Description
(Optional) Specifies the prefix list controls on destination prefixes. |
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(Optional) Specifies the prefix list controls on Label Distribution Protocol (LDP) peers. |
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Defaults
Command Modes
Command History
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Usage Guidelines
To block label advertisements to the rest of the LDP peers, use the no advertise-labels command.
Examples
This example shows how to configure the device to advertise the label on destination prefixes:
This example shows how to configure the device to advertise the label for designated destination prefixes to designated LDP peers:
Related Commands
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Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP). |
affinity (LSP attribute configuration mode)
To configure attribute flags for links that comprise a label switched path (LSP), use the affinity command.
Syntax Description
Defaults
Command Modes
LSP attributes configuration mode
Command History
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Usage Guidelines
The following holds true for all tunnel-te commands that can be specified both in "TE interface configuration mode" or path-option command line or "LSP attribute configuration mode":
If a setting is specified for an LSP, either via the path-option command directly or by assigning an LSP attribute list to a path-option, takes precedence for that specific path-option.
If no setting is specified for an LSP, then the LSP path-option inherits any setting specified in the tunnel-te configuration mode: affinity, auto-bw, priority, record-route, protection/fast-reroute.
Examples
This example shows how to configure attribute flags for links that comprise an LSP:
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Configures the Multiprotocol Label Switching (MPLS) Traffic Engineering protocol (MPLS-TE). |
affinity (TE interface configuration mode)
To configure attribute flags for links that comprise a label switched path (LSP), use the affinity command.
Syntax Description
Defaults
Command Modes
TE interface configuration mode
Command History
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Usage Guidelines
Examples
This example shows how to configure attribute flags for links that comprise an LSP:
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allowas-in
To allow an autonomous system (AS) path with the provider edge (PE) AS number (ASN) a specified number of times, use the allowas-in command.
Syntax Description
Specified number to allowa the AS path. The range is from 1 to 10. |
Defaults
Command Modes
config-router-vrf-neighbor-af mode
Command History
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Usage Guidelines
Examples
This example shows how to allow an AS path with the PE ASN a specified number of times:
Related Commands
area
To configure the sham link on the provider edge (PE) interface within a specified Open Shortest Path First (OSPF) area and with the loopback interfaces specified by the IP addresses as endpoints, use the area command. To return to the default setting, use the no form of this command.
area area-id sham-link source-address destination-address
no area area-id sham-link source-address destination-address
Syntax Description
Defaults
Command Modes
Command History
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Usage Guidelines
Examples
This example shows how to configure the maximum number of routes that can be stored in the virtual routing and forwarding (VRF) route table:
Related Commands
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Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP). |
as-override
To specify to override the autonomous system number (ASN) when sending an update, use the as-override command.
Syntax Description
Defaults
Command Modes
config-router-vrf-neighbor-af mode
Command History
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Usage Guidelines
Examples
This example shows how to specify to override the ASN when sending an update:
authentication challenge
To perform a challenge or response handshake with the new Resource Reservation Protocol (RSVP) neighbors, use the authentication challenge command. To disable global authentication, use the no form of this command.
authentication [neighbor address ip-address] challenge
no authentication [neighbor address ip-address] challenge
Syntax Description
Defaults
Command Modes
Command History
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Usage Guidelines
Examples
This example shows how to perform a challenge handshake with the new RSVP neighbors:
Related Commands
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Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP). |
authentication key-chain
To activate the Resource Reservation Protocol (RSVP) cryptographic authentication for a neighbor, use the authentication key-chain command. To disable global authentication, use the no form of this command.
authentication [neighbor address ip-address] key-chain key-chain-name
no authentication [neighbor address ip-address] key-chain key-chain-name
Syntax Description
Defaults
Command Modes
Command History
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Usage Guidelines
Examples
This example shows how to specify the authentication password keychain:
Related Commands
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Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP). |
authentication lifetime
To control how long the Resource Reservation Protocol (RSVP) maintains security associations with a neighbor, use the authentication lifetime command. To revert to the default lifetime, use the no form of this command.
authentication [neighbor address ip-address] lifetime hh:mm:ss
no authentication [neighbor address ip-address] lifetime hh:mm:ss
Syntax Description
Lifetime value in seconds. The range is from 30 to 86400 seconds. |
Defaults
Command Modes
Command History
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Usage Guidelines
Examples
This example shows how to specify the maximum lifetime of a neighbor authentication state:
Related Commands
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Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP). |
authentication type
To configure the algorithm used to generate cryptographic signatures messages for a neighbor, use the authentication type command. To revert to the default type, use the no form of this command.
authentication [neighbor address ip-address] type {md5 | sha-1}
no authentication [neighbor address ip-address] type {md5 | sha-1}
Syntax Description
Defaults
Command Modes
Command History
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Usage Guidelines
Examples
This example shows how to specify the MD5 authentication algorithm:
Related Commands#
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Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP). |
authentication window-size
To configure the tolerance for the window size for an out-of-sequence message, use the authentication window-size command. To revert to the default type, use the no form of this command.
authentication [neighbor address ip-address] window-size value
no authentication [neighbor address ip-address] window-size value
Syntax Description
(Optional) Specifies the Resource Reservation Protocol (RSVP) neighbor. |
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Maximum number of messages allowed in a window. The range is from 1 to 64. |
Defaults
Command Modes
Command History
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Usage Guidelines
Use authentication window-size command to specify the tolerance for an out-of-sequence messages for a neighbor or globally.
Examples
This example shows how to configure the tolerance for an out-of-sequence message for a neighbor:
Related Commands#
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Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP). |
autoroute announce
To announce the traffic-engineering tunnel to an Interior Gateway Protocol (IGP), use the autoroute announce command. To restore the system to its default condition, use the no form of this command.
Syntax Description
Defaults
Command Modes
TE interface configuration mode
Command History
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Usage Guidelines
Examples
This example shows how to announce the tunnel to IGP:
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auto-bw (LSP attribute configuration mode)
To configure the automatic bandwidth configuration, use the auto-bw command.
auto-bw [frequency secs] [max-bw kbps] [min-bw kbps] [collect-bw]
no auto-bw [frequency secs] [max-bw kbps] [min-bw kbps] [collect-bw]
Syntax Description
Defaults
If the command is entered with no optional keywords, automatic bandwidth adjustment for the LSP is enabled, with adjustments made every 24 hours and with no constraints on the bandwidth adjustments made.If the collect-bw keyword is entered, the bandwidth is sampled but not adjusted, and the other options, if any, are ignored.If the collect-bw keyword is not entered and some, but not all of the other keywords are entered, the defaults for the keywords not entered are: frequency, every 24 hours; min-bw, unconstrained (0); max-bw, unconstrained.
Command Modes
LSP attribute configuration mode
Command History
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Usage Guidelines
The following conditions apply for all traffic-engineering tunnel (TE) commands that can be specified both in TE interface configuration mode, path-option command line or LSP attribute configuration mode:
- If a setting is specified for a label switched path (LSP) either via the path-option command directly or by assigning an LSP attribute list to a path option, this setting takes precedence for that specific path option.
- If no setting is specified for an LSP, then the LSP/path option inherits any setting specified in the tunnel-te configuration mode such as affinity, auto-bw, priority, record-route, protection/fast-reroute.
The bandwidth command configures the initial tunnel bandwidth, which is adjusted by the auto bandwidth mechanism.
Examples
This example shows how to configure the automatic bandwidth configuration:
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auto-bw (TE interface configuration mode)
To configure the automatic bandwidth configuration, use the auto-bw command. To restore the system to its default condition, use the no form of this command.
auto-bw [frequency secs] [max-bw kbps] [min-bw kbps] [collect-bw]
no auto-bw [frequency secs] [max-bw kbps] [min-bw kbps] [collect-bw]
Syntax Description
Defaults
If the command is entered with no optional keywords, automatic bandwidth adjustment for the LSP is enabled, with adjustments made every 24 hours and with no constraints on the bandwidth adjustments made.If the collect-bw keyword is entered, the bandwidth is sampled but not adjusted, and the other options, if any, are ignored.If the collect-bw keyword is not entered and some, but not all of the other keywords are entered, the defaults for the keywords not entered are: frequency, every 24 hours; min-bw, unconstrained (0); max-bw, unconstrained.
Command Modes
TE interface configuration mode
Command History
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Usage Guidelines
The bandwidth command configures the initial tunnel bandwidth, which is adjusted by the auto bandwidth mechanism.
Examples
This example shows how to enable automatic bandwidth adjustment for the tunnel and controls how the bandwidth for a tunnel is adjusted:
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auto-bw timers
To enable automatic bandwidth adjustment on a platform and begin sampling the output rate for tunnels that have been configured for automatic bandwidth adjustment, use the auto-bw timers command. To restore the system to its default condition, use the no form of this command.
auto-bw timers [frequency seconds]
no auto-bw timers [frequency seconds]
Syntax Description
Defaults
When the optional frequency keyword is not specified, the sampling interval is 300 seconds (5 minutes).
Command Modes
Traffic engineering global configuration mode
Command History
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Usage Guidelines
The bandwidth command configures the initial tunnel bandwidth, which is adjusted by the auto bandwidth mechanism.
Examples
This example shows how to enable automatic bandwidth adjustment on a platform that has been configured for automatic bandwidth adjustment:
Related Commands
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Configures the Multiprotocol Label Switching (MPLS) Traffic Engineering Protocol (MPLS-TE). |
autonomous-system
To specify the autonomous system number (ASN) for this address family for the customer site, use the autonomous-system command.
Syntax Description
AS number. The AS number can be a 16-bit integer or a 32-bit integer in the form of a higher 16-bit decimal number and a lower 16-bit decimal number in the xx.xx format. |
Defaults
Command Modes
Command History
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Usage Guidelines
Examples
This example shows how to specify the ASN for an address family for a customer site:
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