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[XRV 9000] IPoE BNG Support

Quick question:

 

Does XRV 9000 Support BNG for IPoE Sessions? I'm using 6.4.1 and 6.4.2  in a virtualized environment and while the control plane works perfectly fine (I'm even authenticating the sessions with Radius), the data plane doesn't. Can't ping anything from simulated DHCP clients. 

 

I get these errors:

RP/0/RP0/CPU0:BNG-9K#ping 10.0.100.3
Mon Aug 6 19:38:34.646 UTC
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.100.3, timeout is 2 seconds:
RP/0/RP0/CPU0:Aug 6 19:38:35.302 UTC: ipv4_io[210]: IPv4 ICMP: Sending icmp echo request to 10.0.100.3
LC/0/0/CPU0:Aug 6 19:38:35.310 UTC: ipv4_io[222]: Punt received for ICMP error: type: 3, subtype: 0
LC/0/0/CPU0:Aug 6 19:38:35.310 UTC: ipv4_io[222]: ipv4_process_icmppunt: Punt received src: 10.0.100.1, dst: 10.0.100.3, frag_off:0x0
LC/0/0/CPU0:Aug 6 19:38:35.310 UTC: ipv4_io[222]: ipv4_icmp_error_trigger: type: 3, code: 0
LC/0/0/CPU0:Aug 6 19:38:35.310 UTC: ipv4_io[222]: ipv4_icmp_error_trigger: Not generating ICMP error - Couldn't determine if subnet broadcast
LC/0/0/CPU0:Aug 6 19:38:35.310 UTC: ipv4_io[222]: ipv4_icmp_error_trigger : interf addr is NULL, if hdl 0x0 idb exists: 0

 

So I started to wonder if this is actually supported. My configurations are proven through working ASR9001 BNGs, nothing fancy.  Is this supported?

 

Thanks!

c.

 

PS: Just in case, I added the config.

Another thing I'm seeing from BNG perspective:

 

2.101.ip1
LC/0/0/CPU0:Aug 6 20:04:06.981 UTC: arp[280]: ARP-PKT: rcvd req src 10.0.101.2 ca03.12d4.001c,
LC/0/0/CPU0:Aug 6 20:04:06.982 UTC: arp[280]: dst 10.0.101.1 0000.0000.0000 if:Bundle-Ether2.101.ip1
LC/0/0/CPU0:Aug 6 20:04:06.982 UTC: arp[280]: ARP-PKT: send rep src 10.0.101.1 0026.0a00.cb35,
LC/0/0/CPU0:Aug 6 20:04:06.982 UTC: arp[280]: dst 10.0.101.2 ca03.12d4.001c if:Bundle-Ether2.101.ip1
LC/0/0/CPU0:Aug 6 20:04:09.439 UTC: arp[280]: ARP-PKT: rcvd req src 10.0.101.2 ca03.12d4.001c,
LC/0/0/CPU0:Aug 6 20:04:09.439 UTC: arp[280]: dst 10.0.101.1 0000.0000.0000 if:Bundle-Ether2.101.ip1
LC/0/0/CPU0:Aug 6 20:04:09.439 UTC: arp[280]: ARP-PKT: send rep src 10.0.101.1 0026.0a00.cb35,
LC/0/0/CPU0:Aug 6 20:04:09.439 UTC: arp[280]: dst 10.0.101.2 ca03.12d4.001c if:Bundle-Ether2.101.ip1
LC/0/0/CPU0:Aug 6 20:04:11.835 UTC: arp[280]: ARP-PKT: rcvd req src 10.0.101.2 ca03.12d4.001c,
LC/0/0/CPU0:Aug 6 20:04:11.835 UTC: arp[280]: dst 10.0.101.1 0000.0000.0000 if:Bundle-Ether2.101.ip1
LC/0/0/CPU0:Aug 6 20:04:11.835 UTC: arp[280]: ARP-PKT: send rep src 10.0.101.1 0026.0a00.cb35,
LC/0/0/CPU0:Aug 6 20:04:11.835 UTC: arp[280]: dst 10.0.101.2 ca03.12d4.001c if:Bundle-Ether2.101.ip1
LC/0/0/CPU0:Aug 6 20:04:12.944 UTC: arp[280]: ARP-PKT: rcvd req src 10.0.100.4 ca02.12c4.001c,
LC/0/0/CPU0:Aug 6 20:04:12.944 UTC: arp[280]: dst 10.0.100.1 0000.0000.0000 if:Bundle-Ether1.100.ip3
LC/0/0/CPU0:Aug 6 20:04:12.944 UTC: arp[280]: ARP-PKT: send rep src 10.0.100.1 0026.0a00.cb36,
LC/0/0/CPU0:Aug 6 20:04:12.944 UTC: arp[280]: dst 10.0.100.4 ca02.12c4.001c if:Bundle-Ether1.100.ip3
LC/0/0/CPU0:Aug 6 20:04:52.927 UTC: arp[280]: ARP-PKT: rcvd req src 10.0.100.4 ca02.12c4.001c,
LC/0/0/CPU0:Aug 6 20:04:52.927 UTC: arp[280]: dst 10.0.100.1 0000.0000.0000 if:Bundle-Ether1.100.ip3
LC/0/0/CPU0:Aug 6 20:04:52.927 UTC: arp[280]: ARP-PKT: send rep src 10.0.100.1 0026.0a00.cb36,
LC/0/0/CPU0:Aug 6 20:04:52.927 UTC: arp[280]: dst 10.0.100.4 ca02.12c4.001c if:Bundle-Ether

 

But packets never get to subscriber. If I remove service-policy, everything works.

Everyone's tags (7)
3 REPLIES 3

Re: [XRV 9000] IPoE BNG Support

As a follow up:

 

Found a dcloud demo and looked through the documentation. It seems like the BNG configuration changes a bit when in XRv. For example, in that document they do not use Bundle interfaces. As soon as I moved everything to a "physical" interface configuration, data plane worked.

Re: [XRV 9000] IPoE BNG Support

Though i'm using physical interface for access-interface, still can't ping to subscriber ip's

 

P/0/RP0/CPU0:vBNG#show configuration running-config 

Fri Aug 17 12:55:06.873 UTC

Building configuration...

!! IOS XR Configuration version = 6.4.2

!! Last configuration change at Fri Aug 17 12:40:51 2018 by root

!

hostname vBNG

logging console debugging

radius-server vsa attribute ignore unknown

radius-server host 192.168.6.80 auth-port 1812 acct-port 1813

 key 7 0012312823

!

username root

 group root-lr

 group cisco-support

 secret 5 $1$k0ik$q3fokS29i1itIfdKFPH0l.

!

aaa group server radius RADIUS-01

 server 192.168.6.80 auth-port 1812 acct-port 1813

 source-interface GigabitEthernet0/0/0/0

!

pool vrf default ipv4 IPv4-POOL-01

 network 10.10.37.0/24 default-router 10.10.37.1

!

dhcp ipv4

 profile DHCP-SERVER server

  lease 0 0 10

  pool IPv4-POOL-01

  dns-server 192.168.6.60

 !

 interface GigabitEthernet0/0/0/1 server profile DHCP-SERVER

!

call-home

 service active

 contact smart-licensing

 profile CiscoTAC-1

  active

  destination transport-method http

 !

!

interface Loopback0

 ipv4 address 10.10.255.253 255.255.255.255

!

interface Loopback1

 ipv4 address 10.10.37.1 255.255.255.0

!

interface MgmtEth0/RP0/CPU0/0

 shutdown

!

interface GigabitEthernet0/0/0/0

 ipv4 address 192.168.6.89 255.255.255.0

!

interface GigabitEthernet0/0/0/1

 ipv4 point-to-point

 ipv4 unnumbered Loopback1

 arp learning disable

 service-policy type control subscriber IPSUBSCRIBER

 ipsubscriber ipv4 l2-connected

  initiator dhcp

 !

!

interface GigabitEthernet0/0/0/2

 shutdown

!

interface GigabitEthernet0/0/0/3

 shutdown

!

interface GigabitEthernet0/0/0/4

 shutdown

!

interface GigabitEthernet0/0/0/5

 shutdown

!

interface GigabitEthernet0/0/0/6

 shutdown

!

router ospf vBNG

 area 0

  interface Loopback0

   passive enable

  !

  interface GigabitEthernet0/0/0/0

  !

 !

!

dynamic-template

 type ipsubscriber IPSUBSCRIBER

  ipv4 unnumbered Loopback1

 !

!

ssh server v2

aaa attribute format USERNAME

 format-string length 253 "%s" client-mac-address

!

aaa accounting subscriber default group RADIUS-01

aaa authorization subscriber default group RADIUS-01

aaa authentication subscriber default group RADIUS-01

!

class-map type control subscriber match-any DHCPv4

 match protocol dhcpv4 

 end-class-map

! 

!

policy-map type control subscriber IPSUBSCRIBER

 event session-start match-first

  class type control subscriber DHCPv4 do-until-failure

   10 activate dynamic-template IPSUBSCRIBER

   20 authorize aaa list default format USERNAME password cisco

  ! 

 ! 

 end-policy-map

! 

end

 

RP/0/RP0/CPU0:vBNG#show subscriber session all

Fri Aug 17 12:55:12.503 UTC

Codes: IN - Initialize, CN - Connecting, CD - Connected, AC - Activated,

       ID - Idle, DN - Disconnecting, ED - End

 

Type         Interface                State     Subscriber IP Addr / Prefix                              

                                                LNS Address (Vrf)                              

--------------------------------------------------------------------------------

IP:DHCP      Gi0/0/0/1.ip10           AC        10.10.37.9 (default)                 

IP:DHCP      Gi0/0/0/1.ip11           AC        10.10.37.7 (default)                 

RP/0/RP0/CPU0:vBNG#show dhcp ipv4 server binding 

Fri Aug 17 12:55:17.580 UTC

 

                                           Lease                                                

 MAC Address      IP Address      State    Remaining       Interface          VRF      Sublabel 

--------------  --------------  ---------  ---------  -------------------  ---------  ----------

000c.29a6.33f5  10.10.37.7      BOUND      387        Gi0/0/0/1            default    0x4000089 

000c.29f8.482c  10.10.37.9      BOUND      311        Gi0/0/0/1            default    0x4000009 

 

RP/0/RP0/CPU0:vBNG#ping 10.10.37.7    

Fri Aug 17 12:55:39.918 UTC

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.10.37.7, timeout is 2 seconds:

.....

Success rate is 0 percent (0/5)

RP/0/RP0/CPU0:vBNG#

Re: [XRV 9000] IPoE BNG Support

Another change I made (out of dcloud demo) is to configure any IP on the interface. That is, stop using the unnumbered loopback command.

 

For example:

 

interface GigabitEthernet0/0/0/1.100
ipv4 point-to-point
ipv4 address 10.100.100.1 255.255.255.0
service-policy type control subscriber NOAUTH
encapsulation dot1q 100
ipsubscriber ipv4 l2-connected
initiator dhcp

 

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