Table Of Contents
show lane default-atm-addresses
show mpoa default-atm-addresses
snmp-server enable traps atm pvc
snmp-server enable traps atm pvc extension
snmp-server enable traps atm pvc extension mibversion
show lane bus
Note
Effective with Cisco IOS Release 15.1M, the show lane bus command is not available in Cisco IOS software.
To display detailed LAN Emulation (LANE) information for the broadcast and unknown server (BUS) configured on an interface or any of its subinterfaces, on a specified subinterface, or on an emulated LAN (ELAN), use the show lane bus command in user EXEC or privileged EXEC mode.
AIP on the Cisco 7500 Series Routers; ATM Port Adapter on the Cisco 7200 Series
show lane bus [interface atm slot/port[.subinterface-number] | name elan-name] [brief]
ATM Port Adapter on the Cisco 7500 Series Routers
show lane bus [interface atm slot/port-adapter/port[.subinterface-number] | name elan-name] [brief]
Cisco 4500 and 4700 Routers
show lane bus [interface atm number[.subinterface-number] | name elan-name] [brief]
Syntax Description
Command Modes
User EXEC
Privileged EXECCommand History
Examples
The following is sample output from the show lane bus command for an Ethernet ELAN:
Router# show lane busLE BUS ATM2/0.2 ELAN name: elan2 Admin: up State: operationaltype: ethernet Max Frame Size: 1516ATM address: 39.020304050607080910111213.00000CA05B42.02data forward: vcd 61, 2 members, 0 packets, 0 unicastslecid vcd pkts ATM Address1 58 0 39.020304050607080910111213.00000CA05B40.022 82 0 39.020304050607080910111213.00602F557940.02The following is sample output from the show lane bus command for a Token Ring LANE:
show lane busLE BUS ATM3/0.1 ELAN name: anubis Admin: up State: operationaltype: token ring Max Frame Size: 4544 Segment ID: 2500ATM address: 47.009181000000000000000000.00000CA01662.01data forward: vcd 14, 2 members, 0 packets, 0 unicastslecid vcd pkts ATM Address1 11 0 47.009181000000000000000000.00000CA01660.012 17 0 47.009181000000000000000000.00000CA04960.01Table 26 describes significant fields shown in the display.
show lane client
Note
To display detailed LAN Emulation (LANE) information for all the LANE clients configured on an interface or any of its subinterfaces, on a specified subinterface, or on an emulated LAN (ELAN), use the show lane client command in user EXEC or privileged EXEC mode.
AIP on the Cisco 7500 Series Routers; ATM Port Adapter on the Cisco 7200 Series
show lane client detail [interface atm slot/port[.subinterface-number] | name elan-name] [brief]
ATM Port Adapter on the Cisco 7500 Series Routers
show lane client detail [interface atm slot/port-adapter/port[.subinterface-number] | name elan-name] [brief]
Cisco 4500 and 4700 Routers
show lane client detail [interface atm number[.subinterface-number] | name elan-name] [brief]
Syntax Description
Command Modes
User EXEC
Privileged EXECCommand History
Examples
The following is sample output from the show lane client command for an Ethernet ELAN:
Router# show lane clientLE Client ATM2/0.2 ELAN name: elan2 Admin: up State: operationalClient ID: 1 LEC up for 11 minutes 49 secondsJoin Attempt: 1HW Address: 0000.0ca0.5b40 Type: ethernet Max Frame Size: 1516ATM Address: 39.020304050607080910111213.00000CA05B40.02VCD rxFrames txFrames Type ATM Address0 0 0 configure 39.020304050607080910111213.00000CA05B43.0055 1 4 direct 39.020304050607080910111213.00000CA05B41.0256 6 0 distribute 39.020304050607080910111213.00000CA05B41.0259 0 1 send 39.020304050607080910111213.00000CA05B42.0260 3 0 forward 39.020304050607080910111213.00000CA05B42.0284 3 5 data 39.020304050607080910111213.00602F557940.02The following is sample output from the show lane client command for a Token Ring LANE:
Router# show lane clientLE Client ATM4/0.1 ELAN name: elan1 Admin: up State: operationalClient ID: 1 LEC up for 2 hours 26 minutes 3 secondsJoin Attempt: 3HW Address: 0060.4770.4180 Type: token ring Max Frame Size: 4544Ring:100 Bridge:2 ELAN Segment ID: 2048ATM Address: 39.020304050607080910111213.006047704180.01VCD rxFrames txFrames Type ATM Address0 0 0 configure 39.020304050607080910111213.006047704183.0010 1 3 direct 39.020304050607080910111213.006047704181.0111 2 0 distribute 39.020304050607080910111213.006047704181.0114 0 0 send 39.020304050607080910111213.006047704182.0115 0 0 forward 39.020304050607080910111213.006047704182.01The following is sample output from the show lane client detail command.
Router# show lane client detailLE Client ATM1/0.1 ELAN name:xxx Admin:up State:operationalClient ID:2 LEC up for 5 days 40 minutes 45 secondsELAN ID:0This client is running in FSSRP mode.Join Attempt:14Known LE Servers:1Configured Idle Time:5 secondsLast Fail Reason:Config VC being releasedHW Address:00e0.8fcf.d820 Type:ethernet Max Frame Size:1516ATM Address:47.0091810000000061705B0C01.00E08FCFD820.01VCD rxFrames txFrames Type ATM Address0 0 0 configure 47.00918100000000613E5A2F01.006070174823.00LEC ID:2, State:LESBUS_ACTIVE52 1778 3556 direct 47.00918100000000613E5A2F01.00000C5A0C59.0153 1778 0 distribute 47.00918100000000613E5A2F01.00000C5A0C59.0154 0 0 send 47.00918100000000613E5A2F01.00000C5A0C5A.0155 0 0 forward 47.00918100000000613E5A2F01.00000C5A0C5A.01LEC ID:3, State:LESBUS_ACTIVE93 122 234 direct 47.00918100000000613E5A2F01.00000ABCD001.0994 122 0 distribute 47.00918100000000613E5A2F01.00000ABCD001.0997 0 0 send 47.00918100000000613E5A2F01.00000ABCD002.0908 0 0 forward 47.00918100000000613E5A2F01.00000ABCD002.09Table 27 describes significant fields shown in the display.
Related Commands
show lane config
Note
To display global LAN Emulation (LANE) information for the configuration server configured on an interface, use the show lane config command in user EXEC or privileged EXEC mode.
AIP on the Cisco 7500 Series Routers; ATM Port Adapter on the Cisco 7200 Series
show lane config [interface atm slot/0]
ATM Port Adapter on the Cisco 7500 Series Routers
show lane config [interface atm slot/port-adapter/0]
Cisco 4500 and 4700 Routers
show lane config [interface atm number]
Syntax Description
Command Modes
User EXEC
Privileged EXECCommand History
Examples
The following is sample show lane config output for an Ethernet ELAN:
Router# show lane configLE Config Server ATM2/0 config table: cisco_engAdmin: up State: operationalLECS Mastership State: active masterlist of global LECS addresses (30 seconds to update):39.020304050607080910111213.00000CA05B43.00ATM Address of this LECS: 39.020304050607080910111213.00000CA05B43.00 (auto)vcd rxCnt txCnt callingParty50 2 2 39.020304050607080910111213.00000CA05B41.02 LES elan2 0 activecumulative total number of unrecognized packets received so far: 0cumulative total number of config requests received so far: 30cumulative total number of config failures so far: 12cause of last failure: no configurationculprit for the last failure: 39.020304050607080910111213.00602F557940.01The following example shows sample show lane config output for TR-LANE:
Router# show lane configLE Config Server ATM4/0 config table: engAdmin: up State: operationalLECS Mastership State: active masterlist of global LECS addresses (40 seconds to update):39.020304050607080910111213.006047704183.00ATM Address of this LECS: 39.020304050607080910111213.006047704183.00 (auto)vcd rxCnt txCnt callingParty7 1 1 39.020304050607080910111213.006047704181.01 LES elan1 0 activecumulative total number of unrecognized packets received so far: 0cumulative total number of config requests received so far: 2cumulative total number of config failures so far: 0Table 28 describes significant fields shown in the display.
show lane database
Note
To display the database of the configuration server, use the show lane database command in user EXEC or privileged EXEC mode.
show lane database [database-name]
Syntax Description
Command Modes
User EXEC
Privileged EXECCommand History
Usage Guidelines
By default, this command displays the LAN Emulated Configuration Server information displayed by the show lane config command.
If no database name is specified, this command shows all databases.
Examples
The following is sample output of the show lane database command for an Ethernet LANE:
Router# show lane databaseLANE Config Server database table 'engandmkt' bound to interface/s: ATM1/0default elan: noneelan `eng': restrictedserver 45.000001415555121f.yyyy.zzzz.0800.200c.1001.01 (prio 0) activeLEC MAC 0800.200c.1100LEC NSAP 45.000001415555121f.yyyy.zzzz.0800.200c.1000.01LEC NSAP 45.000001415555124f.yyyy.zzzz.0800.200c.1300.01elan `mkt':server 45.000001415555121f.yyyy.zzzz.0800.200c.1001.02 (prio 0) activeLEC MAC 0800.200c.1200LEC NSAP 45.000001415555121f.yyyy.zzzz.0800.200c.1000.02LEC NSAP 45.000001415555124f.yyyy.zzzz.0800.200c.1300.02The following is sample output of the show lane database command for a Token Ring LANE:
Router# show lane databaseLANE Config Server database table 'eng' bound to interface/s: ATM4/0default elan: elan1elan 'elan1': un-restricted, local-segment-id 2048server 39.020304050607080910111213.006047704181.01 (prio 0) activeTable 29 describes significant fields shown in the display.
show lane default-atm-addresses
Note
To display the automatically assigned ATM address of each LANE component in a router or on a specified interface or subinterface, use the show lane default-atm-addresses command in user EXEC or privileged EXEC mode.
AIP on the Cisco 7500 series routers; ATM port adapter on the Cisco 7200 series
show lane default-atm-addresses [interface atm slot/port.subinterface-number]
ATM Port Adapter on the Cisco 7500 Series Routers
show lane default-atm-addresses [interface atm slot/port-adapter/port.subinterface-number]
Cisco 4500 and 4700 Routers
show lane default-atm-addresses [interface atm number.subinterface-number]
Syntax Description
Command Modes
User EXEC
Privileged EXECCommand History
Usage Guidelines
It is not necessary to have any of the LANE components running on this router before you use this command.
Examples
The following is sample output of the show lane default-atm-addresses command for the ATM interface 1/0 when all the major LANE components are located on that interface:
Router# show lane default-atm-addresses interface atm1/0interface ATM1/0:LANE Client: 47.000000000000000000000000.00000C304A98.**LANE Server: 47.000000000000000000000000.00000C304A99.**LANE Bus: 47.000000000000000000000000.00000C304A9A.**LANE Config Server: 47.000000000000000000000000.00000C304A9B.00note: ** is the subinterface number byte in hexTable 30 describes the significant fields shown in the display.
show lane le-arp
Note
To display the LANE ARP table of the LANE client configured on an interface or any of its subinterfaces, on a specified subinterface, or on an emulated LAN (ELAN), use the show lane le-arp command in user EXEC or privileged EXEC mode.
AIP on the Cisco 7500 series routers; ATM Port Adapter on the Cisco 7200 series
show lane le-arp [interface atm slot/port[.subinterface-number] | name elan-name]
ATM Port Adapter on the Cisco 7500 Series Routers
show lane le-arp [interface atm slot/port-adapter/port[.subinterface-number] | name elan-name]
Cisco 4500 and 4700 Routers
show lane le-arp [interface atm number[.subinterface-number] | name elan-name]
Syntax Description
Command Modes
User EXEC
Privileged EXECCommand History
Examples
The following is sample output of the show lane le-arp command for an Ethernet LANE client:
Router# show lane le-arpHardware Addr ATM Address VCD Interface0000.0c15.a2b5 39.000000000000000000000000.00000C15A2B5.01 39 ATM1/0.10000.0c15.f3e5 39.000000000000000000000000.00000C15F3E5.01 25* ATM1/0.1The following is sample output of the show lane le-arp command for a Token Ring LANE client:
Router# show lane le-arpRing Bridge ATM Address VCD Interface512 6 39.020304050607080910111213.00602F557940.01 47 ATM2/0.1Table 31 describes the significant fields shown in the display.
show lane neighbor
Note
To display information about all LAN Emulation (LANE) clients that are directly connected to a device, use the show lane neighbor command in user EXEC or privileged EXEC mode.
show lane neighbor
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXECCommand History
12.2(25)S
This command was introduced.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
15.1M
This command was removed.
Usage Guidelines
Enter this command on any device using an image that supports LANE.
Use this command to display the IP address of the LANE clients directly connected to the device and the numbers of the virtual channel descriptors (VCDs) that connect the LANE clients and the device.
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Examples
The following is sample output from the show lane neighbor command entered on a device using a Cisco IOS Release 12.2S or 12.2SB image that does not support LANE CoS:
Router# show lane neighborLane Neighbor Group ListIP Address UBRVCD UBRPLUS VCD IP cos10.11.0.11 143 0 010.13.0.11 148 0 0Table 32 describes the significant fields shown in the display.
Related Commands
show lane server
Note
To display global information for the LANE server configured on an interface, on any of its subinterfaces, on a specified subinterface, or on an emulated LAN (ELAN), use the show lane server command in user EXEC or privileged EXEC mode.
AIP on the Cisco 7500 Series Routers; ATM Port Adapter on the Cisco 7200 Series
show lane server [interface atm slot/port[.subinterface-number] | name elan-name] [brief]
ATM Port Adapter on the Cisco 7500 Series Routers
show lane server [interface atm slot/port-adapter/port[.subinterface-number] | name elan-name] [brief]
Cisco 4500 and 4700 Routers
show lane server [interface atm number[.subinterface-number] | name elan-name] [brief]
Syntax Description
Command Modes
Privileged EXEC
Command History
Examples
The following is sample output from the show lane server command for an Ethernet ELAN:
Router# show lane serverLE Server ATM2/0.2 ELAN name: elan2 Admin: up State: operationaltype: ethernet Max Frame Size: 1516ATM address: 39.020304050607080910111213.00000CA05B41.02LECS used: 39.020304050607080910111213.00000CA05B43.00 connected, vcd 51control distribute: vcd 57, 2 members, 2 packetsproxy/ (ST: Init, Conn, Waiting, Adding, Joined, Operational, Reject, Term)lecid ST vcd pkts Hardware Addr ATM Address1 O 54 2 0000.0ca0.5b40 39.020304050607080910111213.00000CA05B40.022 O 81 2 0060.2f55.7940 39.020304050607080910111213.00602F557940.02The following is sample output from the show lane server command for a Token Ring ELAN:
Router# show lane serverLE Server ATM3/0.1 ELAN name: anubis Admin: up State: operationaltype: token ring Max Frame Size: 4544 Segment ID: 2500ATM address: 47.009181000000000000000000.00000CA01661.01LECS used: 47.009181000000000000000000.00000CA01663.00 connected, vcd 6control distribute: vcd 10, 2 members, 4 packetsproxy/ (ST: Init, Conn, Waiting, Adding, Joined, Operational, Reject, Term)lecid ST vcd pkts Hardware Addr ATM Address1 O 7 3 400.1 47.009181000000000000000000.00000CA01660.010000.0ca0.1660 47.009181000000000000000000.00000CA01660.012 O 16 3 300.1 47.009181000000000000000000.00000CA04960.010000.0ca0.4960 47.009181000000000000000000.00000CA04960.01Table 33 describes the significant fields shown in the display.
show mpoa client
Note
To display a summary of information regarding one or all Multiprotocol over ATM (MPOA) clients (MPCs), use the show mpoa client command in user EXEC or privileged EXEC mode.
show mpoa client [name mpc-name] [brief]
Syntax Description
name mpc-name
(Optional) Name of the MPC with the specified name.
brief
(Optional) Output limit of the command.
Command Modes
User EXEC
Privileged EXECCommand History
Usage Guidelines
If you omit the name keyword, the command displays information for all MPCs.
Examples
The following is sample output from the show mpoa client command:
Router# show mpoa client name ip_mpc briefMPC Name: ip_mpc, Interface: ATM1/0, State: UpMPC actual operating address: 47.00918100000000613E5A2F01.0010A6943825.00Shortcut-Setup Count: 1, Shortcut-Setup Time: 1Lane clients bound to MPC ip_mpc: ATM1/0.1Discovered MPS neighbors kp-alv vcd rxPkts txPkts47.00918100000000613E5A2F01.006070174824.00 59 30 28 2Remote Devices known vcd rxPkts txPkts47.00918100000000613E5A2F01.00000C5A0C5D.00 35 0 10Table 34 describes the significant fields shown in the display.
Related Commands
show mpoa client cache
Note
To display the ingress or egress cache entries matching the IP addresses for the Multiprotocol over ATM (MPOA) clients (MPCs), use the show mpoa client cache command in user EXEC or privileged EXEC mode.
show mpoa client [name mpc-name] cache [ingress | egress] [ip-address ip-address]
Syntax Description
Command Modes
User EXEC
Privileged EXECCommand History
Examples
The following is sample output from the show mpoa client cache command for a specific MPC:
Router# show mpoa client ip_mpc cacheMPC Name: ip-mpc, Interface: ATM1/0, State: UpMPC actual operating address: 47.00918100000000613E5A2F01.0010A6943825.00Shortcut-Setup Count: 1, Shortcut-Setup Time: 1Number of Ingress cache entries: 1MPC Ingress Cache Information:Dst IP addr State vcd Expires Egress MPC Atm address20.20.20.1 RSVLD 35 11:38 47.00918100000000613E5A2F01.00000C5A0C5D.00Number of Egress cache entries: 1MPC Egress Cache Information:Dst IP addr Dst MAC Src MAC MPSid Elan Expires CacheId Tag10.10.10.1 0000.0c5a.0c58 0060.7017.4820 9 2 11:55 1 1Table 35 describes the significant fields shown in the display.
show mpoa client statistics
Note
To display all the statistics collected by a Multiprotocol over ATM (MPOA) client (MPC), use the show mpoa client statistics command in user EXEC or privileged EXEC mode.
show mpoa client [name mpc-name] statistics
Syntax Description
Command Modes
User EXEC
Privileged EXECCommand History
Usage Guidelines
This command displays all the statistics collected by an MPC.
Examples
The following is sample output from the show mpoa client statistics command for the MPC named ip_mpc:
Router# show mpoa client name ip_mpc statisticsMPC Name: ip_mpc, Interface: ATM1/0, State: UpMPC actual operating address: 47.00918100000000613E5A2F01.0010A6943825.00Shortcut-Setup Count: 1, Shortcut-Setup Time: 1Transmitted ReceivedMPOA Resolution Requests 2 0MPOA Resolution Replies 0 2MPOA Cache Imposition Requests 0 0MPOA Cache Imposition Replies 0 0MPOA Cache Purge Requests 0 0MPOA Cache Purge Replies 0 0MPOA Trigger Request 0 0NHRP Purge Requests 0 0Invalid MPOA Data Packets Received: 0show mpoa default-atm-addresses
Note
To display the default ATM addresses for the Multiprotocol over ATM (MPOA) client (MPC), use the show mpoa default-atm-addresses command in user EXEC or privileged EXEC mode.
show mpoa default-atm-addresses
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXECCommand History
Examples
The following is sample output from the show mpoa default-atm-addresses command when the switch prefix is not available:
Router# show mpoa default-atm-addressesinterface ATM1/0:MPOA Server: ...006070174824.**MPOA Client: ...006070174825.**note: ** is the MPS/MPC instance number in hexinterface ATM2/0:MPOA Server: ...006070174844.**MPOA Client: ...006070174845.**note: ** is the MPS/MPC instance number in hexThe following is sample output from the show mpoa default-atm-addresses command when the switch prefix is available:
Router# show mpoa default-atm-addressesinterface ATM1/0:MPOA Server: 47.00918100000000613E5A2F01.006070174824.**MPOA Client: 47.00918100000000613E5A2F01.006070174825.**note: ** is the MPS/MPC instance number in hexinterface ATM2/0:MPOA Server: 47.100000000000000000000000.006070174844.**MPOA Client: 47.100000000000000000000000.006070174845.**note: ** is the MPS/MPC instance number in hexTable 36 describes the significant fields shown in the display.
show mpoa server
Note
To display information about any specified Multiprotocol over ATM (MPOA) server (MPS) or all MPSs in the system, depending on whether the name of the required MPS is specified, use the show mpoa server command in user EXEC or privileged EXEC mode.
show mpoa server [name mps-name]
Syntax Description
Command Modes
User EXEC
Privileged EXECCommand History
Usage Guidelines
The command displays information about server configuration parameters. It also displays information about LAN Emulated Clients (LECs) that are bound to the MPOA server neighbors (both MPC and MPS).
Examples
The following is sample output from the show mpoa server command, with a specified name:
Router# show mpoa server name ip_mpsMPS Name: ip_mps, MPS id: 0, Interface: ATM1/0, State: upnetwork-id: 1, Keepalive: 25 secs, Holding time: 1200 secsKeepalive lifetime: 75 secs, Giveup time: 40 secsMPS actual operating address: 47.00918100000000613E5A2F01.006070174824.00Lane clients bound to MPS ip_mps: ATM1/0.1 ATM1/0.2Discovered neighbours:MPC 47.00918100000000613E5A2F01.00000C5A0C5D.00 vcds: 39(R,A)MPC 47.00918100000000613E5A2F01.0010A6943825.00 vcds: 40(R,A)Table 37 describes the significant fields shown in the display.
Related Commands
clear mpoa server name
Clears the ingress and egress cache entries of one or all MPCs.
show mpoa server cache
Note
To display ingress and egress cache entries associated with an Multiprotocol over ATM (MPOA) server (MPS), use the show mpoa server cache command in user EXEC or privileged EXEC mode.
show mpoa server [name mps-name] cache [ingress | egress] [ip-address ip-address]
Syntax Description
Command Modes
User EXEC
Privileged EXECCommand History
Usage Guidelines
This command displays ingress and egress cache entries associated with an MPS.
Examples
The following is sample output from the show mpoa server cache command, with a name specified:
Router# show mpoa server name ip_mps cacheMPS Name: ip_mps, MPS id: 0, Interface: ATM1/0, State: upnetwork-id: 1, Keepalive: 25 secs, Holding time: 1200 secsKeepalive lifetime: 75 secs, Giveup time: 40 secsMPS actual operating address: 47.00918100000000613E5A2F01.006070174824.00Number of Ingress cache entries: 1Ingress Cache information:IP address Ingress MPC ATM Address Remaining Time20.20.20.1 47.00918100000000613E5A2F01.0010A6943825.00 19:07Number of Egress cache entries: 1Egress Cache information:Dst IP address Ingress MPC ATM Address Remaining Time20.20.20.1 47.00918100000000613E5A2F01.0010A6943825.00 19:06src IP 20.20.20.2, cache Id 1Table 38 describes the significant fields shown in the display.
show mpoa server statistics
Note
To display all the statistics collected by an Multiprotocol over ATM (MPOA) server (MPS), use the show mpoa server statistics command in user EXEC or privileged EXEC mode.
show mpoa server [name mps-name] statistics
Syntax Description
Command Modes
User EXEC
Privileged EXECCommand History
Usage Guidelines
This command will display all the statistics collected by an MPS. The statistics pertain to the ingress or egress cache entry creation, deletion, and failures.
Examples
The following is a sample output from the show mpoa server statistics command, with a name specified:
Router# show mpoa server name ip_mps statisticsMPS Name: ip_mps, MPS id: 0, Interface: ATM1/0, State: upnetwork-id: 1, Keepalive: 25 secs, Holding time: 1200 secsKeepalive lifetime: 75 secs, Giveup time: 40 secsMPS actual operating address: 47.00918100000000613E5A2F01.006070174824.00Opcode Transmitted Received---------------------------------------------------------MPOA Resolution Requests 2MPOA Resolution Replies 2MPOA Cache Imposition Requests 1MPOA Cache Imposition Replies 1MPOA Egress Cache Purge Requests 0MPOA Egress Cache Purge Replies 0NHRP Resolution Requests 0 0NHRP Resolution Replies 0 0NHRP Purge Requests 0 0Table 39 describes the significant fields shown in the display.
show network-clocks
To display the current configured and active network clock sources, use the show network-clocks command in privileged EXEC mode.
show network-clocks
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC
Command History
Usage Guidelines
This command applies to Voice over Frame Relay, Voice over ATM, and Voice over HDLC on the Cisco MC3810.
The Cisco MC3810 has a background task that verifies whether a valid clocking configuration exists every 120 seconds. If this task detects an error, you will be reminded every 120 seconds until the error is corrected. A clocking configuration error may be generated for various reasons. Using the show network-clocks command, you can display the clocking configuration status.
Examples
The following is sample output from the show network-clocks EXEC command:
Router# show network-clocksPriority 1 clock source: ATM3/0/0Priority 2 clock source: System clockPriority 3 clock source: System clockPriority 4 clock source: System clockCurrent clock source:ATM3/0/0, priority:1The following is sample output from the show network-clocks command on the Cisco MC3810:
Router# show network-clocksPriority 1 clock source(inactive config): T1 0Priority 1 clock source(active config) : T1 0Clock switch delay: 10Clock restore delay: 10T1 0 is clocking system bus for 9319 seconds.Run Priority Queue: controller0In this display, inactive configuration is the new configuration that has been established. Active configuration is the run-time configuration. Should an error be made in the new configuration, the inactive and active configurations will be different. In the previous example, the clock priority configuration is valid, and the system is being clocked as indicated.
The following is another sample output from the show network-clocks command:
Router# show network-clocksPriority 1 clock source(inactive config) : T1 0Priority 2 clock source(inactive config) : T1 1Priority 1 clock source(active config) : T1 0Clock switch delay: 10Clock restore delay: 10T1 0 is clocking system bus for 9319 seconds.Run Priority Queue: controller0In this display, the new clocking configuration has an error for controller T1 1. This is indicated by checking differences between the last valid configuration (active) and the new proposed configuration (inactive). The error may result from hardware (the system controller board or MFT) unable to support this mode, or controller T1 1 is currently configured as "clock source internal."
Since the active and inactive configurations are different, the system will periodically display the warning message about the wrong configuration.
Related Commands
network-clock-select (ATM)
Establishes the sources and priorities of the requisite clocking signals for an ATM-CES port adapter.
show sscop
To show Service-Specific Connection-Oriented Protocol (SSCOP) details for all ATM interfaces, use the show sscop command in privileged EXEC mode.
show sscop
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC
Command History
Examples
The following is sample output from the show sscop command:
Router# show sscopSSCOP details for interface ATM4/0Current State = Data Transfer ReadySend Sequence Number: Current = 2, Maximum = 9Send Sequence Number Acked = 3Rcv Sequence Number: Lower Edge = 2, Upper Edge = 2, Max = 9Poll Sequence Number = 1876, Poll Ack Sequence Number = 2Vt(Pd) = 0Connection Control: timer = 1000Timer currently InactiveKeep Alive Timer = 30000Current Retry Count = 0, Maximum Retry Count = 10Statistics -Pdu's Sent = 0, Pdu's Received = 0, Pdu's Ignored = 0Begin = 0/1, Begin Ack = 1/0, Begin Reject = 0/0End = 0/0, End Ack = 0/0Resync = 0/0, Resync Ack = 0/0Sequenced Data = 2/0, Sequenced Poll Data = 0/0Poll = 1591/1876, Stat = 0/1591, Unsolicited Stat = 0/0Unassured Data = 0/0, Mgmt Data = 0/0, Unknown Pdu's = 0Table 40 describes the fields shown in the display. Interpreting this output requires a good understanding of the SSCOP; it is usually displayed by our technicians to help diagnose network problems.
show svc
To display the Switched Virtual Circuits (SVC) information, use the show svc command in user EXEC or privileged EXEC mode.
show svc [ppp | interface | vpi/vci-value | vci-value | connection-name]
Syntax Description
Command Modes
User EXEC (>)
Privileged EXEC (#)Command History
12.4(24)T
This command was introduced in a release earlier than Cisco IOS Release 12.4(24)T.
Usage Guidelines
Use this command to display the SVC information using the available keywords and arguments.
Examples
The following is sample output from the show svc command.
Router# show svc interface atm1/0VCD / Peak Av/Min BurstInterface Name VPI VCI Type Encaps SC Kbps Kbps Cells St1/0 1138 0 125 SVC SNAP UBR 149760 UPTable 41 describes the significant fields shown in the display.
snmp-server enable traps atm pvc
To enable the sending of ATM permanent virtual circuit (PVC) Simple Network Management Protocol (SNMP) notifications, use the snmp-server enable traps atm pvc command in global configuration mode. To disable ATM PVC-specific SNMP notifications, use the no form of this command.
snmp-server enable traps atm pvc [interval seconds] [fail-interval seconds]
no snmp-server enable traps atm pvc [interval seconds] [fail-interval seconds]
Syntax Description
Command Default
SNMP notifications are disabled.
Command Modes
Global configuration
Command History
Usage Guidelines
SNMP notifications can be sent as traps or inform requests. This command enables both traps and inform requests for the specified notification types. ATM notifications are defined in the CISCO-IETF-ATM2-PVCTRAP-MIB.my file, available from the Cisco FTP site at ftp://ftp.cisco.com/pub/mibs/v2/.
ATM PVC failure notifications are sent when a PVC on an ATM interface fails or leaves the UP operational state. Only one trap is generated per hardware interface, within the specified interval defined by the interval keyword (stored as the atmIntfPvcNotificationInterval in the MIB). If other PVCs on the same interface go DOWN during this interval, traps are generated and held until the fail interval has elapsed. When the interval has elapsed, the traps are sent if the PVCs are still DOWN.
No notifications are generated when a PVC returns to the UP state after having been in the DOWN state. If you need to detect the recovery of PVCs, you must use the SNMP management application to regularly poll your router.
The snmp-server enable traps atm pvc command is used in conjunction with the snmp-server host command. Use the snmp-server host command to specify which host or hosts receive SNMP notifications. To send notifications, you must configure at least one snmp-server host command.
Examples
The following example shows the enabling of ATM PVC traps on a router, so that if PVC 0/1 goes down, host 172.16.61.90 will receive the notifications:
!For ATM PVC Trap Support to work on your router, you must first have SNMP support and!an IP routing protocol configured on your router:Router(config)# snmp-server community public roRouter(config)# snmp-server host 172.16.61.90 publicRouter(config)# ip routingRouter(config)# router igrp 109Router(config-router)# network 172.16.0.0!!Enable ATM PVC Trap Support and OAM management:Router(config)# snmp-server enable traps atm pvc interval 40 fail-interval 10Router(config)# interface atm 1/0.1Router(config-if)# pvc 0/1Router(config-if-atm-vc)# oam-pvc manageRelated Commands
snmp-server enable traps atm pvc extension
To enable the sending of extended ATM permanent virtual circuit (PVC) SNMP notifications and SNMP notifications for ATM Operation, Administration, and Maintenance (OAM) F5 continuity check (CC), ATM OAM F5 alarm indication signals/remote defect indications (AIS/RDI), and loopback failures, use the snmp-server enable traps atm pvc extension command in global configuration mode. To disable these SNMP notifications, use the no form of this command.
snmp-server enable traps atm pvc extension {up | down | oam failure [aisrdi | endCC | loopback | segmentCC]}
no snmp-server enable traps atm pvc extension {up | down | oam failure [aisrdi | endCC | loopback | segmentCC]}
Syntax Description
Command Default
SNMP notifications are disabled.
The interval between successive traps is 30 seconds.Command Modes
Global configuration (config)
Command History
Usage Guidelines
For PVCs that are not part of a range, extended ATM PVC traps include virtual path identifier/virtual channel identifier (VPI/ VCI) information, the number of state transitions a PVC goes through in an interval, and the timestamp for the start and end of the transitions. For PVCs that are part of a range, extended ATM PVC traps include the first and last VPI/VCI of the range and the timestamp for the first failure and the last failure within the same range.
Extended ATM PVC and ATM OAM F5 CC traps cannot be used at the same time as the legacy ATM PVC trap. The legacy ATM PVC trap must be disabled by using the no snmp-server enable traps atm pvc command before extended ATM PVC traps can be configured.
The extended ATM PVC failure trap (which is enabled by the snmp-server enable traps atm pvc extension down command) is the same trap as the legacy ATM PVC failure trap (which is enabled by the snmp-server enable traps atm pvc command), but with the following differences:
•
•
•
Note
OAM management must be enabled on the PVC before you can use ATM PVC traps. To generate F5 loopback failure traps, enable OAM management using the oam-pvc manage command. To generate segment F5 CC failure traps, enable segment OAM CC management by using the oam-pvc manage cc segment command. To generate end-to-end F5 CC failure traps, enable end-to-end OAM CC management by using the oam-pvc manage cc end command. To generate OAM F5 AIS/RDI failure traps, enable any of the three types of OAM management listed above.
SNMP notifications can be sent as traps or inform requests. This command enables both traps and inform requests for the specified notification types. The interval between successive traps is 30 seconds.
The extended ATM PVC notifications for MIB version 1 are defined in the CISCO-IETF-ATM2-PVCTRAP-MIB.my file.The extended ATM PVC notifications for MIB version 2 are defined in the CISCO-ATM-PVCTRAP-EXTN-MIB.my file. Both of these MIB files are available from the Cisco FTP site at ftp://ftp.cisco.com/pub/mibs/v2/.
ATM PVC traps are generated at the end of the notification interval. It is possible to generate all three types of ATM PVC traps (the ATM PVC failure trap, ATM PVC up trap, and ATM PVC OAM failure trap) at the end of the same notification interval; however, only one type of trap will be generated for each PVC.
The snmp-server enable traps atm pvc extension command is used in conjunction with the snmp-server host command. Use the snmp-server host command to specify which host or hosts receive SNMP notifications. In order to send notifications, you must configure at least one snmp-server host command.
When the ATM OAM F5 loopback, AIS/RDI, or CC failure trap is enabled, the PVC remains in the UP state when an OAM loopback, AIS/RDI, or CC failure is detected, so that the flow of data will still be possible. If one of these traps is not enabled, the PVC will be placed in the DOWN state when an OAM loopback, AIS/RDI, or CC failure is detected.
Examples
Extended ATM PVC Notifications
The following example shows all three of the extended ATM PVC traps enabled on a router. If PVC 0/1 leaves the UP state, leaves the DOWN state, or has an OAM loopback failure, host 172.16.61.90 will receive the SNMP notifications:
! Configure SNMP support and an IP routing protocol on your router:Router(config)# snmp-server community public roRouter(config)# snmp-server host 172.16.61.90 publicRouter(config)# ip routingRouter(config)# router igrp 109Router(config-router)# network 172.16.0.0!! Enable extended ATM PVC trap support and OAM management:Router(config)# snmp-server enable traps atm pvc extension downRouter(config)# snmp-server enable traps atm pvc extension upRouter(config)# snmp-server enable traps atm pvc extension oam failure loopbackRouter(config)# interface atm 1/0.1Router(config-if)# pvc 0/1Router(config-if-atm-vc)# oam-pvc manageExtended ATM PVC Failure Trap Output
The following example shows output for extended ATM PVC failure trap for PVCs 1/100, 1/102, and 1/103. Note that only one trap is generated for all the PVCs associated with the same interface or subinterface (in contrast to the legacy ATM PVC failure trap, which generates a separate trap for each PVC). The VPI/VCI information and timing information are located in the objects associated with the trap.
00:23:56:SNMP:Queuing packet to 10.1.1.100:23:56:SNMP:V2 Trap, reqid 2, errstat 0, erridx 0sysUpTime.0 = 143636snmpTrapOID.0 = atmIntfPvcFailuresTrapifEntry.1.19 = 19atmIntfPvcFailures.2 = 7atmIntfCurrentlyFailingPVcls.2 = 3atmPVclLowerRangeValue.19.1.2 = 102atmPVclHigherRangeValue.19.1.2 = 103atmPVclRangeStatusChangeStart.19.1.2 = 140643atmPVclRangeStatusChangeEnd.19.1.2 = 140698atmPVclStatusTransition.19.1.100 = 1atmPVclStatusChangeStart.19.1.100 = 140636atmPVclStatusChangeEnd.19.1.100 = 14063600:23:56:SNMP:Packet sent via UDP to 10.1.1.1Extended ATM PVC Up Trap Output
The following example shows output for the extended ATM PVC up trap for PVCs 1/100, 1/102, and 1/103:
00:31:29:SNMP:Queuing packet to 10.1.1.100:31:29:SNMP:V2 Trap, reqid 2, errstat 0, erridx 0sysUpTime.0 = 188990snmpTrapOID.0 = atmIntfPvcUpTrapifEntry.1.19 = 19atmIntfCurrentlyDownToUpPVcls.2 = 3atmPVclLowerRangeValue.19.1.2 = 102atmPVclHigherRangeValue.19.1.2 = 103atmPVclRangeStatusChangeStart.19.1.2 = 186005atmPVclRangeStatusChangeEnd.19.1.2 = 186053atmPVclStatusTransition.19.1.100 = 1atmPVclStatusChangeStart.19.1.100 = 185990atmPVclStatusChangeEnd.19.1.100 = 18599000:31:30:SNMP:Packet sent via UDP to 10.1.1.1ATM OAM F5 CC Notifications
In the following example, the ATM OAM CC notifications and an extended ATM PVC notification are enabled. If connectivity failures are detected on PVC 0/1, host 172.16.61.90 will receive the SNMP notifications:
! Configure SNMP support and an IP routing protocol on your router:Router(config)# snmp-server community public roRouter(config)# snmp-server host 172.16.61.90 publicRouter(config)# ip routingRouter(config)# router igrp 109Router(config-router)# network 172.16.0.0!! Enable extended ATM PVC trap support and OAM management:Router(config)# snmp-server enable traps atm pvc extension mibversion 2Router(config)# snmp-server enable traps atm pvc extension oam failure aisrdiRouter(config)# snmp-server enable traps atm pvc extension oam failure endccRouter(config)# snmp-server enable traps atm pvc extension oam failure segmentccRouter(config)# snmp-server enable traps atm pvc extension oam failure loopbackRouter(config)# snmp-server enable traps atm pvc extension upRouter(config)# interface atm 0Router(config-if)# pvc 0/1Router(config-if-atm-vc)# oam-pvc manage cc endRelated Commands
snmp-server enable traps atm pvc extension mibversion
To specify the MIB that supports extended ATM permanent virtual circuit (PVC) Simple Network Management Protocol (SNMP) notifications or the MIB that supports SNMP notifications for ATM Operation, Administration, and Maintenance (OAM) F5 continuity check (CC) management, ATM OAM F5 AIS/RDI management, and F5 loopback failure management, use the snmp-server enable traps atm pvc extension mibversion command in global configuration mode. To remove the MIB specification, use the no form of this command.
snmp-server enable traps atm pvc extension mibversion {1 | 2}
no snmp-server enable traps atm pvc extension mibversion {1 | 2}
Syntax Description
Command Default
SNMP notifications are disabled.
Command Modes
Global configuration
Command History
12.2(15)T
This command was introduced.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
Usage Guidelines
MIB version 1 specifies the MIB that supports legacy extended ATM PVC traps and is defined in the file CISCO-IETF-ATM2-PVCTRAP-MIB-EXTN.my. MIB version 1 is implemented by default. Use the snmp-server enable traps atm pvc extension mibversion 1 command or the no snmp-server enable traps atm pvc extension mibversion 2 command to reenable this MIB if it was previously disabled with the snmp-server enable traps atm pvc extension mibversion 2 command.
Use the snmp-server enable traps atm pvc extension mibversion 2 command to specify the MIB that supports ATM OAM F5 CC and ATM OAM AID/RDI failure notifications. This MIB is defined in the file CISCO-ATM-PVCTRAP-EXTN-MIB.my.
To enable the SNMP notifications that support ATM OAM F5 continuity checking, use the snmp-server enable traps atm pvc extension command in global configuration mode. These SNMP notifications are defined in the file CISCO-ATM-PVCTRAP-EXTN-MIB.my, available from the Cisco FTP site at ftp://ftp.cisco.com/pub/mibs/v2/.
OAM management and support for OAM F5 continuity checking must be enabled on the PVC by using the oam-pvc manage cc command before you can use the ATM OAM continuity check SNMP notifications.
Examples
In the following example, the MIB that supports the SNMP notifications for ATM OAM continuity checking is implemented, and the ATM OAM continuity checking notifications are enabled. Support for end-to-end OAM F5 continuity checking is enabled on PVC 0/1:
Router(config)# snmp-server enable traps atm pvc extension mibversion 2Router(config)# snmp-server enable traps atm pvc extension oam failure aisrdiRouter(config)# snmp-server enable traps atm pvc extension oam failure endccRouter(config)# snmp-server enable traps atm pvc extension oam failure segmentccRouter(config)# snmp-server enable traps atm pvc extension oam failure loopbackRouter(config)# snmp-server enable traps atm pvc extension upRouter(config)# interface atm 0Router(config-if)# pvc 0/40Router(config-if-atm-vc)# oam-pvc manage cc endRelated Commands
sscop cc-timer
To change the connection control timer, use the sscop cc-timer interface configuration command. To restore the default value, use the no form of this command.
sscop cc-timer seconds
no sscop cc-timer
Syntax Description
Defaults
1 second
Command Modes
Interface configuration
Command History
Usage Guidelines
The connection control timer determines the time between transmission of BGN (establishment), END (release), or RS (resynchronization) protocol data units (PDUs) as long as an acknowledgment has not been received.
Examples
The following example sets the connection control timer 15 seconds:
sscop cc-timer 15Related Commands
sscop keepalive-timer
To change the keepalive timer, use the sscop keepalive-timer interface configuration command. To restore the default value, use the no form of this command.
sscop keepalive-timer seconds
no sscop keepalive-timer seconds
Syntax Description
seconds
Number of seconds the router waits between transmission of POLL PDUs when no sequential data (SD) or SDP PDUs are queued for transmission or are outstanding pending acknowledgments.
Defaults
5 seconds
Command Modes
Interface configuration
Command History
Examples
The following example sets the keepalive timer to 15 seconds:
sscop keepalive-timer 15sscop max-cc
To change the retry count of connection control, use the sscop max-cc interface configuration command. To restore the default value, use the no form of this command.
sscop max-cc retries
no sscop max-cc
Syntax Description
Defaults
10 retries
Command Modes
Interface configuration
Command History
Examples
The following example sets the retry count of the connection control to 20:
sscop max-cc 20Related Commands
sscop poll-timer
To change the poll timer, use the sscop poll-timer interface configuration command. To restore the default value, use the no form of this command.
sscop poll-timer seconds
no sscop poll-timer
Syntax Description
Defaults
100 seconds
Command Modes
Interface configuration
Command History
Usage Guidelines
The poll timer controls the maximum time between transmission of POLL PDUs when SD or SDP PDUs are queued for transmission or are outstanding pending acknowledgments.
Examples
The following example sets the poll timer to 15 seconds:
sscop poll-timer 15sscop receive-window
To change the receiver window, use the sscop receive-window interface configuration command. To restore the default value, use the no form of this command.
sscop receive-window packets
no sscop receive-window
Syntax Description
packets
Number of packets the interface can receive before it must send an acknowledgment to the ATM switch. Valid range is from 1 to 6000.
Defaults
7 packets
Command Modes
Interface configuration
Command History
Examples
The following example sets the receiver's window to 10 packets:
sscop rcv-window 10sscop send-window
To change the transmitter window, use the sscop send-window interface configuration command. To restore the default value, use the no form of this command.
sscop send-window packets
no sscop send-window
Syntax Description
packets
Number of packets the interface can send before it must receive an acknowledgment from the ATM switch. Valid range is from 1 to 6000.
Defaults
7 packets
Command Modes
Interface configuration
Command History
Examples
The following example sets the transmitter's window to 10 packets:
sscop send-window 10svc
To create an ATM switched virtual circuit (SVC) and specify the destination network service access point (NSAP) address on a main interface or subinterface, use the svc interface configuration command. To disable the SVC, use the no form of this command.
svc [name] [nsap address] [ces]
no svc [name] [nsap address] [ces]
Syntax Description
Command Default
No NSAP address is defined.
Command Modes
Interface configuration
Command History
Usage Guidelines
After configuring the parameters for an ATM SVC, you must exit the interface-ATM-VC or interface-CES-VC configuration mode in order to enable the SVC settings.
Once you specify a name for an SVC, you can reenter the interface-ATM-VC or interface-CES-VC configuration mode by simply entering svc name.
You can remove an NSAP address and any associated parameters by entering no svc name or no svc nsap address.
Creating an SVC without a specific NSAP address will allow a router to accept calls from any ATM address, and allow multiple VCs to be set up using the same configuration.
Use the ces keyword to configure an active or passive CES SVC. An active CES SVC can originate and terminate SVC calls. A passive CES SVC can only terminate calls.
Note
Examples
SVC Example
The following example creates an SVC called "chicago" on ATM interface 2/0/0:
interface atm 2/0/0svc chicagoSVC with NSAP Address Example
The following example creates an SVC with the name "lion" and specifies the 40-digit hexadecimal destination ATM NSAP address:
svc lion nsap 47.0091.81.000000.0040.0B0A.2501.ABC1.3333.3333.05Active CES SVC Example
The following example creates an active CES SVC named "ces1":
interface atm 1/0svc ces1 nsap 47.00.00.000000.0040.0B0A.2501.ABC1.01.01.00 cesPassive CES SVC Example
The following example creates a passive CES SVC named "ces2":
interface atm 1/0svc ces2 cestransmit-priority
To configure the transmit priority for a virtual circuit (VC), use the transmit-priority command in VC configuration mode. To configure the VC or PVC for its default transmit priority, use the no form of this command.
transmit-priority level
no transmit-priority
Syntax Description
Defaults
Each VC is configured with the default transmit priority for its configured QoS class (see Table 42).
Command Modes
VC configuration mode
Command History
Usage Guidelines
By default, permanent virtual circuits (PVC) and switch virtual circuits (SVCs) that are created on PA-A3 ATM port adapters and ATM shared port adapters (SPA) use a default transmit priority level that depends on the VC's or PVC's configured quality of service (QoS) class. Table 42 lists the default transmit priority levels for each type of service class.
Table 42 Default Transmit Priorities for Each ATM Service Class
0 (highest)
Signaling, and OAM and other control cells
1
CBR when greater than half of the line rate
2
VBR-rt6
CBR when less than half of the line rate
3
VBR-nrt7
Voice traffic
4
ABR8
VBR-rt
5
UBR9
VBR-nrt
6
Not Supported
UBR
7 (lowest)
Not Supported
Unused
1 CBR=Constant Bit Rate
2 OAM=Operation, Administration, and Maintenance
3 AAL5=Asynchronous Transfer Mode Adaption Layer 5
4 AAL2=Asynchronous Transfer Mode Adaption Layer 2
5 VoATM=Voice over ATM
6 VBR-rt=Variable Bit Rate-Real Time
7 VBR-nrt=Variable Bit Rate-Non-Real Time
8 ABR=Available Bit Rate
9 UBR=Unspecified Bit Rate
To change these default transmit priority levels for a particular VC or PVC, use the transmit-priority command.
The transmit-priority command is not supported in the following cases:
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•
•
Tip
Examples
The following example shows the transmit-priority command being used to change the priority for a PVC on a PA-A3 ATM port adapter. The PVC is configured for the VBR-rt service class, which has a default transmit priority level of 2, but the transmit-priority command changes the priority level to 3:
Router# configure terminalRouter(config)# interface atm 3/0.10Router(config)# pvc 10/1Router(config-if-atm-vc)# vbr-rt 48 48Router(config-if-atm-vc)# transmit-priority 3Router(config-if-atm-vc)# endRouter#The following example shows the transmit-priority command being used to change the priority for a PVC on an ATM SPA. Because the PVC defaults to the UBR service class, its default transmit priority is configured to 6, but the transmit-priority command changes the priority level to 4:
Router# configure terminalRouter(config)# interface atm 4/1/3Router(config-if)# pvc 1/100Router(config-if-atm-vc)# transmit-priority 4Router(config-if-atm-vc)# endRouter#
Note
Related Commands
show atm pvc
Displays the configuration of a particular permanent virtual circuit (PVC).
show atm svc
Displays the configuration of a particular switched virtual circuit (SVC).
tx-limit
To specify the number of transmit buffers for an ATM virtual circuit (VC), use the tx-limit command in ATM VC, VC-bundle, VC-class, or VC-range configuration mode. To reset the number of transmit buffers for a particular VC to the default value, use the no form of this command.
tx-limit buffers
no tx-limit
Syntax Description
buffers
Specifies the number of buffers to be used for this VC. The valid range is 1 to 57343, with a default value that is based on the current VC line rate.
Defaults
Automatically computed from the VC line rate to produce a default latency of 100 milliseconds (or whatever value is specified by the atm tx-latency command).
Command Modes
Interface-ATM-VC configuration (for an ATM VC)
VC-bundle configuration
VC-class configuration
VC-range configuration
Command History
Usage Guidelines
When you configure a VC on an ATM SPA interface, the Cisco IOS software automatically determines the maximum number of transmit buffers that are needed by the VC for its outgoing traffic. The Cisco IOS software uses both the configured VC line rate and latency value to calculate the number of buffers. Each transmit buffer can contain an ATM cell (53 bytes).
By default, each VC uses the latency value that is specified by the atm tx-latency command, which defaults to 100 milliseconds. The maximum number of transmit buffers is then calculated, so that traffic at the maximum VC line rate can still be transmitted within this latency value.
If a particular VC's traffic flow requires a different latency value, use the tx-limit command to manually configure the number of transmit buffers for that VC. This allows you to fine-tune the latency value on a per-VC basis, without affecting the other VCs on the interface.
Tip
Note
Note
Examples
The following example shows an ATM VC being configured for a maximum of 500 buffers:
Router# configure terminalRouter(config)# interface atm 4/0/0.10 point-to-pointRouter(config-subif)# pvc 10/101Router(config-if-atm-vc)# tx-limit 500Router(config-if-atm-vc)#The following example shows an ATM VC being reset for its default buffer value, which will be whatever buffer size is needed, at the VC line rate, to produce a default latency of 100 milliseconds (or whatever value is specified by the atm tx-latency command):
Router# configure terminalRouter(config)# interface atm 3/0/1.10 point-to-pointRouter(config-subif)# pvc 10/20Router(config-if-atm-vc)# no tx-limitRouter(config-if-atm-vc)#Related Commands
atm tx-latency
Specifies the default transmit latency for an ATM Shared Port Adapter (SPA) interface.
ubr
To configure unspecified bit rate (UBR) quality of service (QoS) and specify the output peak cell rate (PCR) for an ATM permanent virtual circuit (PVC), PVC range, switched virtual circuit (SVC), virtual circuit (VC) class, or VC bundle member, use the ubr command in the appropriate command mode. To remove the UBR parameter, use the no form of this command.
ubr output-pcr [input-pcr]
no ubr output-pcr [input-pcr]
Syntax Description
Command Default
UBR QoS at the maximum line rate of the physical interface.
Command Modes
ATM PVC-in-range configuration (for an individual PVC within a PVC range)
ATM PVP configuration
ATM PVC range configuration (for an ATM PVC range)
Bundle-vc configuration (for ATM VC bundle members)
Interface-ATM-VC configuration (for an ATM PVC or SVC)
VC-class configuration (for a VC class)Command History
Usage Guidelines
To configure ATM SVCs with an output PCR and an input PCR that differ from each other, you must expressly configure an output value and an input value using the output-pcr and input-pcr arguments, respectively.
Configure QoS parameters using the ubr, ubr+, or vbr-nrt command. The last command you enter will apply to the PVC or SVC you are configuring.
If the ubr command is not explicitly configured on an ATM PVC, SVC, or VC bundle member, the VC inherits the following default configuration (listed in order of next highest precedence):
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•
•
•
To use this command in VC-class configuration mode, enter the vc-class atm global configuration command. This command has no effect if the VC class that contains the command is attached to a standalone VC, that is, if the VC is not a bundle member.
To use this command in bundle-vc configuration mode, first enter the bundle command to specify the bundle, then enter bundle configuration mode. Then enter the pvc-bundle configuration command to add the VC to the bundle as a member of it and enter bundle-vc configuration mode.
VCs in a VC bundle are subject to the following configuration inheritance rules (listed in order of next highest precedence):
•
•
•
Examples
The following example specifies the output-pcr argument for an ATM PVC to be 100,000 kbps:
pvc 1/32ubr 100000The following example specifies the output-pcr and input-pcr arguments for an ATM SVC to be 10,000 kbps and 9000 kbps, respectively:
svc lion nsap 47.0091.81.000000.0040.0B0A.2501.ABC1.3333.3333.05ubr 10000 9000Related Commands
ubr+
To configure unspecified bit rate (UBR) quality of service (QoS) and specify the output peak cell rate and output minimum guaranteed cell rate for an ATM permanent virtual circuit (PVC), PVC range, switched virtual circuit (SVC), virtual circuit (VC) class, or VC bundle member, use the ubr+ command in the appropriate command mode. To remove the UBR+ parameters, use the no form of this command.
ubr+ output-pcr output-mcr [input-pcr] [input-mcr]
no ubr+ output-pcr output-mcr [input-pcr] [input-mcr]
Syntax Description
Defaults
UBR QoS is at the maximum line rate of the physical interface.
Command Modes
Interface-ATM-VC configuration (for an ATM PVC on non-DSL interfaces only or an ATM SVC on non-DSL interfaces only)
VC-class configuration (for a VC class)
Bundle-VC configuration (for ATM VC bundle members)
PVC range configuration (for an ATM PVC range)
PVC-in-range configuration (for an individual PVC within a PVC range)Command History
Usage Guidelines
To configure ATM SVCs with an output PCR and an input PCR that differ from each other, you must expressly configure an output value and an input value using the output-pcr, output-mcr, input-pcr, and input-mcr arguments.
Configure QoS parameters using the ubr, ubr+, or vbr-nrt command. The last command that you enter will apply to the PVC or SVC that you are configuring.
If the ubr+ command is not explicitly configured on an ATM PVC or SVC, the VC inherits the following default configuration (in order of precedence):
•
•
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To use this command in VC-class configuration mode, enter the vc-class atm global configuration command before you enter the ubr+ command. This command has no effect if the VC class that contains the command is attached to a standalone VC (meaning a VC that is not a bundle member).
To use this command in bundle-VC configuration mode, enter the bundle command to specify the bundle to which the VC member belongs, then enter bundle configuration mode. Finally, enter the pvc-bundle bundle configuration command to add the VC to the bundle as a member.
VCs in a VC bundle use the following configuration inheritance rules (in order of next-highest precedence):
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DSL ATM interfaces do not support switched virtual circuits (SVCs).
Examples
The following example configures UBR+ PVC on a DSL line:
interface atm 0/0pvc 4/100ubr+ 2304 2304The following example specifies the output-pcr argument for an ATM PVC to be 100000 kbps and the output-mcr to be 3000 kbps:
pvc 1/32ubr+ 100000 3000The following example specifies the output-pcr, output-mcr, input-pcr, and input-mcr arguments for an ATM SVC to be 10000 kbps, 3000 kbps, 9000 kbps, and 1000 kbps, respectively:
svc lion nsap 47.0091.81.000000.0040.0B0A.2501.ABC1.3333.3333.05ubr+ 10000 3000 9000 1000Related Commands
ubr+ cos
To map the class of service (CoS) value or range of values to an unspecified bit rate plus (UBR+) virtual channel connection (VCC), use the ubr+ cos command in LANE QoS database configuration mode. To revert to the default value or range, use the no form of this command.
ubr+ cos {value | range}
no ubr+ cos {value | range}
Syntax Description
Defaults
The default CoS range for a UBR+ VCC is 4 to 7.
Command Modes
LANE QoS database configuration
Command History
Usage Guidelines
This command is supported only on the router platforms until Cisco IOS Release 12.1(4)E1. In Cisco IOS Release 12.1(4)E1, this command is supported on all platforms running the QoS over LANE feature, with the lone exception of the Catalyst 5000 family ATM module operating in untrusted mode.
All packets matching the specified CoS values are sent on the UBR+ VCC. A single ubr+ cos command can be entered in a database. All network services access point (NSAP) addresses in that database use the same mapping. If a different mapping is required, a separate database needs to be created.
You can configure multiple CoS values by entering individual CoS values separated by commas, or by entering a range of CoS values, separated by a hyphen.
Examples
In the following example, the CoS value is mapped to 1 and 3 to 5:
Router(lane-qos)# ubr+ cos 1,3-5Related Commands
vbr-nrt
To configure the variable bit rate-nonreal time (VBR-NRT) quality of service (QoS) and specify output peak cell rate (PCR), output sustainable cell rate (SCR), and output maximum burst cell size for an ATM permanent virtual circuit (PVC), PVC range, switched virtual circuit (SVC), VC class, or VC bundle member, use the vbr-nrt command in the appropriate command mode. To remove the VBR-NRT parameters, use the no form of this command.
vbr-nrt output-pcr output-scr output-maxburstsize [input-pcr] [input-scr] [input-maxburstsize]
no vbr-nrt output-pcr output-scr output-maxburstsize [input-pcr] [input-scr] [input-maxburstsize]
Cisco 10000 Series Router
vbr-nrt output-pcr output-scr output-maxburstsize
no vbr-nrt output-pcr output-scr output-maxburstsize
Syntax Description
Command Default
Unspecified bit rate (UBR) QoS at the maximum line rate of the physical interface is the default.
Command Modes
ATM PVC-in-range configuration (for an individual PVC within a PVC range)
ATM PVC range configuration (for an ATM PVC range)
ATM PVP configuration
Bundle-vc configuration (for ATM VC bundle members)
Interface-ATM-VC configuration (for an ATM PVC or SVC)
VC-class configuration (for a VC class)Command History
Usage Guidelines
Configure QoS parameters using the ubr, ubr+, or vbr-nrt command. The last command you enter will apply to the PVC or SVC you are configuring.
If the vbr-nrt command is not explicitly configured on an ATM PVC or SVC, the VC inherits the following default configuration (listed in order of precedence):
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To use this command in VC-class configuration mode, enter the vc-class atm global configuration command before you enter the vbr-nrt command. This command has no effect if the VC class that contains the command is attached to a standalone VC, that is, if the VC is not a bundle member.
To use this command in bundle-vc configuration mode, enter the pvc-bundle configuration command and add the VC as a bundle member.
VCs in a VC bundle are subject to the following configuration inheritance rules (listed in order of precedence):
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Cisco 10000 Series Router
Input PCR, input SCR, and input maximum burst size (MBS) are not supported.
For Cisco IOS Release 12.2(31)SB2 and later releases, if you set the output PCR and SCR to the same value, the Cisco IOS software allows a maximum burst cell size of 1. For example:
Prior to Cisco IOS Release 12.2(31)SB2interface ATM2/0/0.81801 point-to-pointbandwidth 11760pvc 81/801vbr-nrt 11760 11760 32encapsulation aal5snapprotocol pppoeCisco IOS Release 12.2(31)SB2 and Later Releasesinterface ATM2/0/0.81801 point-to-pointbandwidth 11760pvc 81/801vbr-nrt 11760 11760 1encapsulation aal5snapprotocol pppoeExamples
The following example specifies the output PCR for an ATM PVC to be 100,000 kbps, the output SCR to be 50,000 kbps, and the output MBS to be 64:
pvc 1/32vbr-nrt 100000 50000 64The following example specifies the VBR-NRT output and input parameters for an ATM SVC:
svc atm-svc1 nsap 47.0091.81.000000.0040.0B0A.2501.ABC1.3333.3333.05vbr-nrt 10000 5000 32 20000 10000 64Related Commands
vbr-rt
To configure the real-time variable bit rate (VBR) for VoATM voice connections, use the vbr-rt command in the appropriate configuration mode. To disable VBR for voice connections, use the no form of this command.
vbr-rt peak-rate average-rate burst
no vbr-rt
Syntax Description
Command Default
No real-time VBR settings are configured
Command Modes
ATM Bundle-vc configuration for ATM VC bundle members
ATM PVP configuration for an ATM PVP
Interface-ATM-VC configuration for an ATM permanent virtual connection (PVC) or switched virtual circuit (SVC)
VC-class configuration for a virtual circuit (VC) classCommand History
Usage Guidelines
This command configures traffic shaping between voice and data PVCs. Traffic shaping is required so that the carrier does not discard calls. To configure voice and data traffic shaping, you must configure the peak, average, and burst options for voice traffic. Configure the burst value if the PVC will carry bursty traffic. Peak, average, and burst values are needed so that the PVC can effectively handle the bandwidth for the number of voice calls.
Calculate the minimum peak, average, and burst values for the number of voice calls as follows:
Peak Value
Peak value = (2 x the maximum number of calls) x 16K = _______________
Average Value
Calculate according to the maximum number of calls that the PVC will carry times the bandwidth per call. The following formulas give you the average rate in kbps:
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Average value = max calls x 128K = _______________
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Average value = max calls x 85K = _______________
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Average value = max calls x 85K = _______________
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Average value = max calls x 85K = _______________
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Average value = max calls x 43K = _______________
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Average value = max calls x 43K = _______________
If voice activity detection (VAD) is enabled, bandwidth usage is reduced by as much as 12 percent with the maximum number of calls in progress. With fewer calls in progress, bandwidth savings are less.
Burst Value
Set the burst size as large as possible, and never less than the minimum burst size. Guidelines are as follows:
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When you configure data PVCs that will be traffic shaped with voice PVCs, use AAL5snap encapsulation and calculate the overhead as 1.13 times the voice rate.
Examples
The following example configures the traffic-shaping rate for ATM PVC 20. Peak, average, and burst rates are calculated based on a maximum of 20 calls on the PVC.
pvc 20encapsulation aal5mux voicevbr-rt 640 320 80Related Commands
encapsulation aal5
Configures the AAL and encapsulation type for an ATM PVC, SVC, or VC class.
vc-class atm
To create a virtual circuit (VC) class for an ATM permanent virtual circuit (PVC), switched virtual circuit (SVC), or ATM interface and enter vc-class configuration mode, use the vc-class atm global configuration command. To remove a VC class, use the no form of this command.
vc-class atm name
no vc-class atm name
Syntax Description
Command Default
No VC class is defined.
Command Modes
Global configuration
Command History
Usage Guidelines
If an SVC command (for example, the idle-timeout or oam-svc command) is applied on a PVC, the command is ignored. This is also true if a PVC command is applied to an SVC.
Examples
The following example creates a VC class named "pvc-qos".
vc-class atm pvc-qos
