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Cisco IOS Wide-Area Networking Command Reference, Release 12.3
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Introduction
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Wide-Area Networking Commands: A through B
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Wide-Area Networking Commands: C
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Wide-Area Networking Commands: D through E
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Wide-Area Networking Commands: forward through frame-relay lmi-type
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Wide-Area Networking Commands: frame-relay local-dlci through fr-atm connect dlci
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Wide-Area Networking Commands: I through L
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Wide-Area Networking Commands: M through R
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Wide-Area Networking Commands: scrambling through show dxi pvc
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Wide-Area Networking Commands: show frame-relay through show vc-group
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Wide-Area Networking Commands: show x25 through sscop send-window
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Wide-Area Networking Commands: ssg through svc
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Wide-Area Networking Commands: threshold through x25 nvc
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Wide-Area Networking Commands: x25 ops through xot access-group
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Table Of Contents
frame-relay address registration auto-address
frame-relay address registration ip
frame-relay address-reg enable
frame-relay congestion threshold de
frame-relay congestion threshold ecn
frame-relay congestion-management
frame-relay end-to-end keepalive error-threshold
frame-relay end-to-end keepalive event-window
frame-relay end-to-end keepalive mode
frame-relay end-to-end keepalive success-events
frame-relay end-to-end keepalive timer
frame-relay fragment end-to-end
frame-relay fragmentation voice-adaptive
frame-relay interface-dlci switched
frame-relay ip tcp compression-connections
frame-relay ip tcp header-compression
forward accounting-start-stop
To proxy accounting start, stop, and update packets generated by any RADIUS clients to the authentication, authorization, and accounting (AAA) server, use the forward accounting-start-stop command in SSG-radius-proxy configuration mode. To stop forwarding accounting start, stop, and update packets, use the no form of this command.
forward accounting-start-stop
no forward accounting-start-stop
Syntax Description
This command has no arguments or keywords.
Defaults
Forward accounting-start-stop is disabled by default.
Command Modes
SSG-radius-proxy configuration
Command History
12.2(4)B
This command was introduced.
12.2(13)T
This command was integrated into Cisco IOS Release 12.2(13)T.
Usage Guidelines
Use this command to proxy accounting start, stop, and update packets generated by all RADIUS clients to the AAA server. Disabling this command reduces RADIUS packet traffic and processing for deployments where the billing server is not using these packets for billing purposes.
Note
The forward accounting-start-stop command does not affect accounting on and off packets, which are forwarded regardless of this command.
Examples
The following example shows how to proxy accounting packets generated by all RADIUS clients to the AAA server:
ssg radius-proxyserver-port auth 1645 acct 1646client-address 10.1.2.2 key secret1client-address 10.2.25.90 key secret2client-address 10.0.0.1 key secret3client-address 10.23.3.2 key secret4idle-timeout 30forward accounting-start-stopaddress-pool 10.1.1.1 10.1.40.250address-pool 10.1.5.1 10.1.5.30 domain ssg.comRelated Commands
frame-relay accounting adjust
To enable byte count adjustment at the permanent virtual circuit (PVC) level so that the number of bytes sent and received at the PVC corresponds to the actual number of bytes sent and received on the physical interface, use the frame-relay accounting adjust command in interface configuration mode. To disable byte count adjustment, use the no form of this command.
frame-relay accounting adjust
no frame-relay accounting adjust [frf9]
Syntax Description
frf9
(Optional) Payload compression using the Stacker method.
Note
Defaults
Byte count adjustment is enabled.
Command Modes
Interface configuration
Command History
Usage Guidelines
Use this command to return the number of bytes shown at the PVC level back to the number of bytes received at the PVC level without any adjustments. This command takes into consideration any dropped packets as well as compression and decompression that may occur after initial processing.
If you use the no frame-relay accounting adjust frf9 command, then byte count includes dropped packets and traffic shaping, but not compression and decompression savings from FRF.9.
Examples
The following example enables Frame-Relay accounting adjustment:
Router# configure terminalRouter(config)# interface serial3/0Router(config-if) frame-relay accounting adjustThe following example disables Frame-Relay accounting adjustment:
Router# configure terminalRouter(config)# interface serial3/0Router(config-if) no frame-relay accounting adjustRouter(config-if)# endThe following example verifies that Frame-Relay accounting adjustment is disabled:
Router# show run interface serial3/0Building configuration...Current configuration :266 bytes!interface Serial3/0no ip addressencapsulation frame-relayno frame-relay accounting adjustendRelated Commands
frame-relay adaptive-shaping
To enable Frame Relay adaptive traffic shaping, use the frame-relay adaptive-shaping command in map-class configuration mode. To disable adaptive traffic shaping, use the no form of this command.
frame-relay adaptive-shaping {becn | foresight | interface-congestion [queue-depth]}
no frame-relay adaptive-shaping {becn | foresight | interface-congestion}
Syntax Description
Defaults
Frame Relay adaptive traffic shaping is not enabled.
Queue depth: 0 packetsCommand Modes
Map-class configuration
Command History
11.3
This command was introduced.
12.2(4)T
This command was modified to configure adaptive traffic shaping for interface congestion.
Usage Guidelines
This command replaces the frame-relay becn-response-enable command. If you use the frame-relay becn-response-enable command in scripts, you should replace it with the frame-relay adaptive-shaping command.
The frame-relay adaptive-shaping command configures a router to adjust virtual circuit (VC) sending rates in response to BECN or ForeSight backward congestion notification messages or interface congestion.
Include this command in a map-class definition and apply the map class either to the main interface or to a subinterface.
Adaptive traffic shaping for interface congestion can be configured along with BECN or ForeSight. When adaptive shaping for interface congestion is used with BECN or ForeSight, if interface congestion exceeds the queue depth, then the PVC send rate is reduced to minimum committed information rate (minCIR). When interface congestion drops below the queue depth, then the send rate is adjusted in response to BECN or ForeSight.
Note
Examples
ForeSight Example
This example shows the map-class definition for a router configured with traffic shaping and Router ForeSight enabled:
interface Serial0no ip addressencapsulation frame-relayframe-relay traffic-shapingframe-relay class control-A!map-class frame-relay control-Aframe-relay adaptive-shaping foresightframe-relay cir 56000frame-relay bc 64000Adaptive Shaping for Interface Congestion Example
In the following example, the queue depth is set at 10 packets. If the number of packets in the interface queue exceeds 10, the rate of traffic destined for PVC 200 will be reduced to the minCIR. When the number of packets in the interface queue drops below 10, then the traffic rate will immediately return to the CIR.interface serial0encapsulation frame-relayframe-relay traffic-shapingframe-relay interface-dlci 200class adjust_vc_class_rate!map-class frame-relay adjust_vc_class_rateframe-relay cir 64000frame-relay mincir 32000frame-relay adaptive-shaping interface-congestion 10Related Commands
frame-relay address registration auto-address
To enable a router to automatically select a management IP address for Enhanced Local Management Interface (ELMI) address registration, use the frame-relay address registration auto-address command in global configuration mode. To disable automatic address selection, use the no form of this command.
frame-relay address registration auto-address
no frame-relay address registration auto-address
Syntax Description
This command has no arguments or keywords.
Defaults
Auto address selection is enabled.
Command Modes
Global configuration
Command History
Usage Guidelines
During system initialization, if no management IP address is configured, then the router automatically selects the IP address of one of the interfaces. The router will choose an Ethernet interface first and then serial and other interfaces. If you do not want the router to select a management IP address during system initialization, you can store the no form of this command in the configuration.
When automatic address selection is disabled and an IP address has not been configured using the frame-relay address registration ip global configuration command, the IP address for ELMI address registration will be set to 0.0.0.0.
The no frame-relay address registration ip command will set the IP address to 0.0.0.0, even when Frame Relay automatic address selection is enabled.
If you configure the IP address using the frame-relay address registration ip global configuration command, the IP address you configure will overwrite the IP address chosen automatically by the router.
If you enable automatic address selection after configuring the IP address using the frame-relay address registration ip global configuration command, the IP address chosen automatically by the router will overwrite the IP address you originally configured.
Examples
The following example shows ELMI enabled on serial interface 0. The automatic IP address selection mechanism is disabled, and no other management IP address has been configured, so the device will share a valid ifIndex and a management IP address of 0.0.0.0.
interface Serial 0no ip addressencapsulation frame-relayframe-relay lmi-type ansiframe-relay qos-autosense!no frame-relay address registration auto-addressRelated Commands
frame-relay address registration ip
To configure the IP address for Enhanced Local Management Interface (ELMI) address registration, use the frame-relay address registration ip command in global configuration mode. To set the IP address to 0.0.0.0, use the no form of this command.
frame-relay address registration ip address
no frame-relay address registration ip
Syntax Description
Defaults
No default behavior or values
Command Modes
Global configuration
Command History
Usage Guidelines
A management IP address configured by using the frame-relay address registration ip command will overwrite the IP address chosen by the router when automatic address selection is enabled.
The no frame-relay address registration ip command will disable automatic IP address selection and set the management IP address to 0.0.0.0.
If you enable automatic address selection with the frame-relay address registration auto-address global command after configuring the IP address using the frame-relay address registration ip global configuration command, the IP address chosen automatically by the router will overwrite the IP address you originally configured.
Examples
The following example shows ELMI enabled on serial interface 0. The IP address to be used for ELMI address registration is configured, so automatic IP address selection is disabled by default.
interface Serial 0no ip addressencapsulation frame-relayframe-relay lmi-type ansiframe-relay qos-autosense!frame-relay address registration ip address 10.1.1.1Related Commands
frame-relay address-reg enable
To enable Enhanced Local Management Interface (ELMI) address registration on an interface, use the frame-relay address-reg enable command in interface configuration mode. To disable ELMI address registration, use the no form of this command.
frame-relay address-reg enable
no frame-relay address-reg enable
Syntax Description
This command has no arguments or keywords.
Defaults
ELMI address registration is enabled.
Command Modes
Interface configuration
Command History
Usage Guidelines
ELMI address registration is enabled by default when ELMI is enabled.
Examples
The following example shows ELMI address registration disabled on serial interface 0.
interface Serial 0no ip addressencapsulation frame-relayframe-relay lmi-type ansiframe-relay qos-autosenseno frame-relay address-reg enableRelated Commands
frame-relay bc
To specify the incoming or outgoing committed burst size (Bc) for a Frame Relay virtual circuit, use the frame-relay bc command in map-class configuration mode. To reset the committed burst size to the default, use the no form of this command.
frame-relay bc {in | out} bits
no frame-relay bc {in | out} bits
Syntax Description
in | out
Incoming or outgoing; if neither is specified, both in and out values are set.
bits
Committed burst size, in bits. Range is from 300 to 16000000. Default is 7000.
Defaults
7000 bits
Command Modes
Map-class configuration
Command History
Usage Guidelines
The Frame Relay committed burst size is specified within a map class to request a certain burst rate for the circuit. Although it is specified in bits, an implicit time factor is the sampling interval Tc on the switch, which is defined as the burst size divided by the committed information rate (CIR).
Examples
In the following example, the serial interface already has a basic configuration, and a map group called "group1" has already been defined. The example shows a map-list configuration that defines the source and destination addresses for bermuda, provides IP and IPX addresses, and ties the map list definition to the map class called "class1". Then traffic-shaping parameters are defined for the map class.
map-list group1 local-addr X121 31383040703500 dest-addr X121 31383040709000ip 172.21.177.26 class class1 ietfipx 123.0000.0c07.d530 class class1 ietfmap-class frame-relay class1frame-relay cir in 2000000frame-relay mincir in 1000000frame-relay cir out 15000frame-relay mincir out 10000frame-relay bc in 15000frame-relay bc out 9600frame-relay be in 10000frame-relay be out 10000frame-relay idle-timer 30Related Commands
frame-relay be
Sets the incoming or outgoing excess burst size (Be) for a Frame Relay VC.
frame-relay cir
Specifies the incoming or outgoing CIR for a Frame Relay VC.
frame-relay be
To set the incoming or outgoing excess burst size (Be) for a Frame Relay virtual circuit, use the frame-relay be command in map-class configuration mode. To reset the excess burst size to the default, use the no form of this command.
frame-relay be {in | out} bits
no frame-relay be {in | out} bits
Syntax Description
Defaults
7000 bits
Command Modes
Map-class configuration
Command History
Usage Guidelines
The Frame Relay excess burst size is specified within a map class to request a certain burst rate for the circuit. Although it is specified in bits, an implicit time factor is the sampling interval Tc on the switch, which is defined as the burst size divided by the committed information rate (CIR).
Examples
In the following example, the serial interface already has a basic configuration, and a map group called "bermuda" has already been defined. The example shows a map-list configuration that defines the source and destination addresses for bermuda, provides IP and IPX addresses, and ties the map list definition to the map class called "jamaica". Then traffic-shaping parameters are defined for the map class.
map-list bermuda local-addr X121 31383040703500 dest-addr X121 31383040709000ip 172.21.177.26 class jamaica ietfipx 123.0000.0c07.d530 class jamaica ietfmap-class frame-relay jamaicaframe-relay cir in 2000000frame-relay mincir in 1000000frame-relay cir out 15000frame-relay mincir out 10000frame-relay bc in 15000frame-relay bc out 9600frame-relay be in 10000frame-relay be out 10000frame-relay idle-timer 30Related Commands
frame-relay bc
Specifies the incoming or outgoing committed burst size (Bc) for a Frame Relay VC.
frame-relay cir
Specifies the incoming or outgoing CIR for a Frame Relay VC.
frame-relay broadcast-queue
To create a special queue for a specified interface to hold broadcast traffic that has been replicated for transmission on multiple data-link connection identifiers (DLCIs), use the frame-relay broadcast-queue command in interface configuration mode.
frame-relay broadcast-queue size byte-rate packet-rate
Syntax Description
size
Number of packets to hold in the broadcast queue.
byte-rate
Maximum number of bytes to be sent per second.
packet-rate
Maximum number of packets to be sent per second.
Defaults
size: 64 packets
byte-rate: 256000 bytes per second
packet-rate: 36 packets per secondCommand Modes
Interface configuration
Command History
Usage Guidelines
For purposes of the Frame Relay broadcast queue, broadcast traffic is defined as packets that have been replicated for transmission on multiple DLCIs. However, the broadcast traffic does not include the original routing packet or service access point (SAP) packet, which passes through the normal queue. Because of timing sensitivity, bridged broadcasts and spanning-tree packets are also sent through the normal queue. The Frame Relay broadcast queue is managed independently of the normal interface queue. It has its own buffers and a configurable service rate.
A broadcast queue is given a maximum transmission rate (throughput) limit measured in bytes per second and packets per second. The queue is serviced to ensure that only this maximum is provided. The broadcast queue has priority when transmitting at a rate below the configured maximum, and hence has a guaranteed minimum bandwidth allocation. The two transmission rate limits are intended to avoid flooding the interface with broadcasts. The actual limit in any second is the first rate limit that is reached.
Given the transmission rate restriction, additional buffering is required to store broadcast packets. The broadcast queue is configurable to store large numbers of broadcast packets.
The queue size should be set to avoid loss of broadcast routing update packets. The exact size will depend on the protocol being used and the number of packets required for each update. To be safe, set the queue size so that one complete routing update from each protocol and for each DLCI can be stored. As a general rule, start with 20 packets per DLCI. Typically, the byte rate should be less than both of the following:
•
•
The packet rate is not critical if you set the byte rate conservatively. Set the packet rate at 250-byte packets.
Examples
The following example specifies a broadcast queue to hold 80 packets, to have a maximum byte transmission rate of 240000 bytes per second, and to have a maximum packet transmission rate of 160 packets per second:
frame-relay broadcast-queue 80 240000 160frame-relay cir
To specify the incoming or outgoing committed information rate (CIR) for a Frame Relay virtual circuit, use the frame-relay cir command in map-class configuration mode. To reset the CIR to the default, use the no form of this command.
frame-relay cir {in | out} bps
no frame-relay cir {in | out} bps
Syntax Description
Defaults
56000 bits per second
Command Modes
Map-class configuration
Command History
Usage Guidelines
Use this command to specify a CIR for an SVC. The specified CIR value is sent through the SETUP message to the switch, which then attempts to provision network resources to support this value.
Examples
The following example sets a higher committed information rate for incoming traffic than for outgoing traffic (which is going out on a slow WAN line):
frame-relay cir in 2000000frame-relay cir out 9600Related Commands
frame-relay class
To associate a map class with an interface or subinterface, use the frame-relay class command in interface configuration mode. To remove the association between the interface or subinterface and the named map class, use the no form of this command.
frame-relay class name
no frame-relay class name
Syntax Description
Defaults
No map class is defined.
Command Modes
Interface configuration
Command History
Usage Guidelines
This command can apply to interfaces or subinterfaces.
All relevant parameters defined in the name map class are inherited by each virtual circuit created on the interface or subinterface. For each virtual circuit, the precedence rules are as follows:
1.
2.
3.
4.
Examples
The following example associates the slow_vcs map class with the serial 0.1 subinterface and defines the slow_vcs map class to have an outbound CIR value of 9600:
interface serial 0.1frame-relay class slow_vcsmap-class frame-relay slow_vcsframe-relay cir out 9600If a virtual circuit exists on the serial 0.1 interface and is associated with some other map class, the parameter values of the second map class override those defined in the slow_vc map class for that virtual circuit.
Related Commands
frame-relay congestion threshold de
To configure the threshold at which discard-eligible (DE)-marked packets will be discarded from the traffic-shaping queue of a switched permanent virtual circuit (PVC), use the frame-relay congestion threshold de command in map-class configuration mode. To reconfigure the threshold, use the no form of this command.
frame-relay congestion threshold de percentage
no frame-relay congestion threshold de percentage
Syntax Description
percentage
Threshold at which DE-marked packets will be discarded, specified as a percentage of the maximum queue size.
Defaults
100%
Command Modes
Map-class configuration
Command History
Usage Guidelines
The frame-relay congestion threshold de command applies only to default FIFO traffic-shaping queues.
You must enable Frame Relay switching using the frame-relay switching global command before Frame Relay congestion management parameters will be effective on switched PVCs.
Examples
The following example illustrates the configuration of the DE congestion threshold in the Frame Relay map class called "perpvc_congestion":
map-class frame-relay perpvc_congestionframe-relay congestion threshold de 50Related Commands
frame-relay congestion threshold ecn
To configure the threshold at which explicit congestion notice (ECN) bits will be set on packets in the traffic-shaping queue of a switched permanent virtual circuit (PVC), use the frame-relay congestion threshold ecn command in map-class configuration mode. To reconfigure the threshold, use the no form of this command.
frame-relay congestion threshold ecn percentage
no frame-relay congestion threshold ecn percentage
Syntax Description
percentage
Threshold at which ECN bits will be set on packets, specified as a percentage of the maximum queue size.
Defaults
100%
Command Modes
Map-class configuration
Command History
Usage Guidelines
The frame-relay congestion threshold ecn command applies only to default FIFO traffic-shaping queues.
One ECN threshold applies to all traffic on a traffic-shaping queue. You cannot configure separate thresholds for committed and excess traffic.
You must enable Frame Relay switching using the frame-relay switching global command before the frame-relay congestion threshold ecn command will be effective on switched PVCs.
Examples
The following example illustrates the configuration of the ECN congestion threshold in the Frame Relay map class called "perpvc_congestion":
map-class frame-relay perpvc_congestionframe-relay congestion threshold ecn 50Related Commands
frame-relay congestion-management
To enable Frame Relay congestion management functions on all switched permanent virtual circuits (PVCs) on an interface and to enter Frame Relay congestion management configuration mode, use the frame-relay congestion-management command in interface configuration mode. To disable Frame Relay congestion management, use the no form of this command.
frame-relay congestion-management
no frame-relay congestion-management
Syntax Description
This command has no arguments or keywords.
Defaults
Frame Relay congestion management is not enabled on switched PVCs.
Command Modes
Interface configuration
Command History
Usage Guidelines
You must enable Frame Relay switching using the frame-relay switching global command before you can configure Frame Relay congestion management.
Frame Relay congestion management is supported only when the interface is configured with FIFO queueing, weighted fair queueing (WFQ), or PVC interface priority queueing (PIPQ).
Examples
In the following example, the frame-relay congestion-management command enables Frame Relay congestion management on serial interface 1. The command also enters Frame Relay congestion management configuration mode so that congestion threshold parameters can be configured.
interface serial1encapsulation frame-relayframe-relay intf-type dceframe-relay congestion-managementthreshold ecn be 0threshold ecn bc 20threshold de 40Related Commands
frame-relay custom-queue-list
To specify a custom queue to be used for the virtual circuit queueing associated with a specified map class, use the frame-relay custom-queue-list command in map-class configuration mode. To remove the specified queueing from the virtual circuit and cause it to revert to the default first-come, first-served queueing, use the no form of this command.
frame-relay custom-queue-list list-number
no frame-relay custom-queue-list list-number
Syntax Description
Defaults
If this command is not entered, the default queueing is first come, first served.
Command Modes
Map-class configuration
Command History
Usage Guidelines
Use the queue-list commands to define the custom queue.
Only one form of queueing can be associated with a particular map class; subsequent definitions overwrite previous ones.
Examples
The following example configures a custom queue list for the "fast_vcs" map class:
map-class frame-relay fast_vcsframe-relay custom-queue-list 1queue-list 1 queue 4 byte-count 100Related Commands
frame-relay de-group
To specify the discard eligibility (DE) group number to be used for a specified data-link connection identifier (DLCI), use the frame-relay de-group command in interface configuration mode. To disable a previously defined group number assigned to a specified DLCI, use the no form of this command with the relevant keyword and arguments.
frame-relay de-group group-number dlci
no frame-relay de-group [group-number] [dlci]
Syntax Description
Defaults
No DE group is defined.
Command Modes
Interface configuration
Command History
Usage Guidelines
To disable all previously defined group numbers, use the no form of this command with no arguments.
This command requires that Frame Relay be enabled.
Frame Relay DE group functionality is supported on process-switched packets only.
The DE bit is not set or recognized by the Frame Relay switching code, but must be recognized and interpreted by the Frame Relay network.
Note
Examples
The following example specifies that group number 3 will be used for DLCI 170:
frame-relay de-group 3 170Related Commands
frame-relay de-list
Defines a DE list specifying the packets that have the DE bit set and thus are eligible for discarding during congestion on the Frame Relay switch.
frame-relay de-list
To define a discard eligibility (DE) list specifying the packets that have the DE bit set and thus are eligible for discarding when congestion occurs on the Frame Relay switch, use the frame-relay de-list command in global configuration mode. To delete a portion of a previously defined DE list, use the no form of this command.
frame-relay de-list list-number {protocol protocol | interface type number} characteristic
no frame-relay de-list list-number {protocol protocol | interface type number} characteristic
Syntax Description
Defaults
Discard eligibility is not defined.
Command Modes
Global configuration
Command History
Usage Guidelines
To remove an entire DE list, use the no form of this command with no options and arguments.
This prioritizing feature requires that the Frame Relay network be able to interpret the DE bit as indicating which packets can be dropped first in case of congestion, or which packets are less time sensitive, or both.
When you calculate packet size, include the data packet size, the ICMP header, the IP header, and the Frame Relay encapsulation bytes. For example, count 92 bytes of data, 8 bytes for the ICMP header, 20 bytes for the IP header, and 4 bytes for the Frame Relay encapsulation, which equals 124 bytes.
Examples
The following example specifies that IP packets larger than 512 bytes (including the 4-byte Frame Relay encapsulation) will have the DE bit set:
frame-relay de-list 1 protocol ip gt 512frame-relay end-to-end keepalive error-threshold
To modify the keepalive error threshold value, use the frame-relay end-to-end keepalive error-threshold command in map-class configuration mode. To reset the error threshold value to its default, use the no form of this command.
frame-relay end-to-end keepalive error-threshold {send | receive} count
no frame-relay end-to-end keepalive error-threshold {send | receive}
Syntax Description
Defaults
The default value for both the send and receive error threshold is 2.
Command Modes
Map-class configuration
Command History
Usage Guidelines
The send-side value can be configured only in bidirectional and request modes. The receive-side value can be configured only in bidirectional and reply modes. See the frame-relay end-to-end keepalive mode command. When you configure the error threshold, also configure the event window. See the frame-relay end-to-end keepalive event-window command.
Examples
The following example shows increasing the receive-side error threshold to 4 and changing the event window to 7:
map-class frame-relay olgaframe-relay end-to-end keepalive replyframe-relay end-to-end keepalive error-threshold receive 4frame-relay end-to-end keepalive event-window receive 7Related Commands
frame-relay end-to-end keepalive event-window
To modify the keepalive event window value, use the frame-relay end-to-end keepalive event-window command in map-class configuration mode. To reset the event window size to the default, use the no form of this command.
frame-relay end-to-end keepalive event-window {send | receive} size
no frame-relay end-to-end keepalive event-window {send | receive}
Syntax Description
