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Note | AAL5 L3 Termination is not supported on the Cisco ASR 900 RSP3 module. |
This feature enables the Asynchronous Transfer Mode Adaptation Layer 5 (AAL5) layer 3 termination on the interface module (IM) (T1/E1 and OC-3) cards on the Cisco ASR 903 Router.
When ATM feature is enabled, IMs can be deployed for ATM service that delivers high-performance interconnectivity, metro, and intra-point of presence (POP) applications between service POPs for IP/Multiprotocol Label Switching (IP/MPLS) transport (Figure 1).
AAL5 L3 termination can also be deployed at customer premises equipment (CPE) to provide the data component for the service provider networks. The ATM service allows service providers to effectively manage the bandwidth at the edges of the network while implementing value-added Layer 3 service.
Half-duplex VRF is not supported on this router.
PVCs configured on the router remain active until the circuit is removed from the configuration. All virtual circuit characteristics apply to PVCs. When a PVC is configured, all configuration options are passed to the TDM IMs. These PVCs are written to the nonvolatile RAM (NVRAM) as part of the configuration and are used when the Cisco IOS image is reloaded.
When you create a PVC, you create a virtual circuit descriptor (VCD) and attach it to the VPI and VCI. The VCD tells the card which VPI/VCI to use for a particular packet. The TDM IM card requires this feature to manage the packets for transmission. The number chosen for the VCD is independent of the virtual path identifier/virtual channel identifier (VPI/VCI) used.
1.
enable
2.
configure
terminal
3. controller {t1 | e1} slot/bay/port
4.
atm
5.
interface
atm
interface-number [.subinterface-number
point-to-point]
6.
ip
address
ip-addressip-address-mask
7.
pvc
[name]
vpi|vci
8.
encapsulation
aal5snap
9.
end
1.
enable
2.
configure
terminal
3. controller {t1 | e1slot/bay/port}
4.
atm
5.
interfaceinterface-number
atm
[.subinterface-number
point-to-point]
6.
ip
address
ip-address
ip-address-mask
7.
pvc
[name]
vpi|vci
8.
Do one of the
following:
9.
encapsulation
aal5snap
10.
end
1.
enable
2.
configure
terminal
3. controller {t1 | e1} slot/bay/port
4.
atm
5.
interface
interface-number
atm
[.subinterface-number
point-to-point]
6.
ip
addressip-address
ip-address-mask
7.
pvc
[name]
vpi|vci
8.
protocol ip
protocol-address
broadcast
9.
encapsulation
aal5snap
10.
end
Virtual Routing and Forwarding (VRF) is an IP technology that allows multiple instances of a routing table to exist in the same router at the same time. VRF can be enabled on ATM L3 interface.
1.
enable
2.
configure
terminal
3. controller {t1 | e1} slot/bay/port
4.
atm
5.
interface
interface-numberatm
[.subinterface-number
point-to-point]
6.
ip vrf forwarding
vrf-name
7.
ip
addressip-address
ip-address-mask
8.
no
atm
enable-ilmi-trap
9.
pvc
[name]vpi
|vci
10.
encapsulation
aal5snap
11.
end
Router(config)# controller sonet 3/1/0 Router(config-controller)# framing sonet Router(config-controller)# sts-1 1 Router(config-ctrlr-sts)# vtg 1 t1 1 atm Router(config)# interface ATM3/1/0.1/1/1.1 point-to-point Router(config-subif)# ip address 192.0.1.5 255.255.255.0 Router(config-subif)# pvc 10/100 Router(cfg-if-atm-vc)# encapsulation aal5snap Router(cfg-if-atm-vc)#
Router(config)# controller sonet 0/1/0 Router(config-controller)# framing sdh Router(config-controller)# aug mapping au-4 Router(config-controller)# au-4 1 tug-3 1 Router(config-ctrlr-tug3)# tug-2 1 e1 1 atm Router(config)# interface ATM0/0/0.1/1/1/1.2 point-to-point Router(config-subif)# ip address 192.0.2.3 255.255.255.0 Router(config-subif)# pvc 10/100 Router(cfg-if-atm-vc)# encapsulation aal5snap Router(cfg-if-atm-vc)#
interface ATM0/3/2.1/1/1.101 point-to-point pvc 20/101 ubr 100 encapsulation aal5snap ! End interface ATM1/1/0.1/1/1.102 point-to-point ip address 192.0.2.1 255.255.255.0 pvc 20/102 cbr 1000 encapsulation aal5snap interface ATM1/1/0.1/1/1.102 point-to-point ip address 192.0.2.1 255.255.255.0 pvc 20/102 vbr-rt 1000 600 20 encapsulation aal5snap interface ATM1/1/0.1/1/1.102 point-to-point ip address 192.0.2.1 255.255.255.0 pvc 20/102 vbr-nrt 1500 1000 10 encapsulation aal5snap interface ATM1/1/0.1/1/1.102 point-to-point ip address 192.0.2.1 255.255.255.0 pvc 20/102 ubr+ 1000 100 encapsulation aal5snap
interface ATM0/3/2.1/1/1.200 point-to-point ip address 192.168.1.2 255.255.255.0 no atm enable-ilmi-trap pvc 200/10 protocol ip 192.168.1.2 broadcast ----------(remote end IP) ! End
ip vrf VPN_A rd 100:1 route-target export 100:1 route-target import 100:1 interface ATM0/3/2.1/1/1.200 point-to-point ip vrf forwarding VPN_A ip address 10.0.0.1 255.255.255.0 no atm enable-ilmi-trap pvc 200/10 ! End Router# ping vrf VPN_A 11.12.13.14 -------(Remote end IP) Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.0.0.1, timeout is 2 seconds: !!!!!
Router# show atm pvc Keys: C = ATM0/4/0.1/1/1, B = ATM0/4/2.1/1/1, VCD / Peak Av/Min Burst Interface Name VPI VCI Type Encaps SC Kbps Kbps Cells St C.1 1 180 181 PVC SNAP UBR 1536 UP B.1 1 180 181 PVC AAL5 UBR 1536 UP
Router# show interfaces AT0/4/0.1/1/1.1 ATM0/4/0.1/1/1.1 is up, line protocol is up Hardware is A900-IMA4OS, address is 0022.bddd.d4c0 (bia 0022.bddd.d4c0) Internet address is 192.168.0.1/24 MTU 4470 bytes, BW 1536 Kbit/sec, DLY 100 usec, reliability 255/255, txload 129/255, rxload 129/255 Encapsulation ATM Keepalive not supported 13551261 packets input, 731768094 bytes 13551227 packets output, 731766258 bytes 0 OAM cells input, 0 OAM cells output AAL5 CRC errors : 0 AAL5 SAR Timeouts : 0 AAL5 Oversized SDUs : 0 AAL5 length violation : 0 Last clearing of "show interface" counters never
Router# show atm pvc interface atm 0/4/0.1/1/1.1 Key: C = ATM0/4/0.1/1/1 VCD / Peak Av/Min Burst Interface Name VPI VCI Type Encaps SC Kbps Kbps Cells St C.1 1 180 181 PVC SNAP UBR 1536 UP
Router# show atm map Map list ATM0/3/2.1/1/1.200pvcC8000A : PERMANENT ip 191.168.1.14 maps to VC 5, VPI 200, VCI 10, ATM0/3/2.1/1/1.200 , broadcast
Related Topic |
Document Title |
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Cisco IOS commands |
|
ATM commands |
Cisco IOS Asynchronous Transfer Mode Command Reference |
MIB |
MIBs Link |
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To locate and download MIBs for selected platforms, Cisco software releases, and feature sets, use Cisco MIB Locator found at the following URL: |