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Cisco Bug: CSCus73215 - dot1q/qinq vlan back-back ping failed after applying isis config

Last Modified

Jan 07, 2017

Products (1)

  • Cisco Carrier Routing System

Known Affected Releases

5.4.0.BASE

Description (partial)

Symptom:
CE1--PE1 (three dot1q under one interface, three qinq under second intf):

CE1 config:
hostname ce1
logging console disable
username lab
 group root-lr
 group cisco-support
 secret 5 $1$wrW6$B5qeohlzLutF6M7d20lst0
!
line console
 timestamp disable
 exec-timeout 0 0
!
interface Loopback0
 ipv4 address 101.0.0.1 255.255.255.255
 ipv6 address 101::1/128
!
interface Loopback1
 ipv4 address 101.0.1.1 255.255.255.255
 ipv6 address 101:1::1/128
!
interface Loopback2
 ipv4 address 101.0.2.1 255.255.255.255
 ipv6 address 101:2::1/128
!
interface Loopback3
 ipv4 address 101.0.3.1 255.255.255.255
 ipv6 address 101:3::1/128
!
interface Loopback4
 ipv4 address 101.0.4.1 255.255.255.255
 ipv6 address 101:4::1/128
!
interface GigabitEthernet0/RP0/CPU0/2
 description interface33 -> pe1-uut:GigabitEthernet0/RP0/CPU0/6
 mtu 1514
 ipv4 address 91.2.0.1 255.255.255.0
 ipv6 address 901:a02:2::1/112
 load-interval 30
!
interface GigabitEthernet0/RP0/CPU0/3
 description interface35 -> pe1-uut:GigabitEthernet0/RP0/CPU0/7
 mtu 1514
 ipv4 address 91.3.0.1 255.255.255.0
 ipv6 address 901:a03:3::1/112
 load-interval 30
!
interface GigabitEthernet0/RP0/CPU0/4
 description interface37 -> pe1-uut:GigabitEthernet0/RP0/CPU0/8
 mtu 1514
 ipv4 address 91.4.0.1 255.255.255.0
 ipv6 address 901:a03:4::1/112
 load-interval 30
!
interface GigabitEthernet0/RP0/CPU0/5
 description interface39 -> pe1-uut:GigabitEthernet0/RP0/CPU0/9
 mtu 1514
 ipv4 address 91.5.0.1 255.255.255.0
 ipv6 address 901:a03:5::1/112
 load-interval 30
!
interface GigabitEthernet0/RP0/CPU0/6
!
interface GigabitEthernet0/RP0/CPU0/6.1
 description interface74 -> pe1-uut:GigabitEthernet0/RP0/CPU0/10.1
 mtu 1514
 ipv4 address 192.3.4.1 255.255.255.0
 ipv6 address 2002:c003:400::1/112
 load-interval 30
 dot1q vlan 400 20
!
interface GigabitEthernet0/RP0/CPU0/6.2
 description interface76 -> pe1-uut:GigabitEthernet0/RP0/CPU0/10.2
 mtu 1514
 ipv4 address 192.3.5.1 255.255.255.0
 ipv6 address 2002:c003:400::1:1/112
 load-interval 30
 dot1q vlan 400 21
!
interface GigabitEthernet0/RP0/CPU0/6.3
 description interface78 -> pe1-uut:GigabitEthernet0/RP0/CPU0/10.3
 mtu 1514
 ipv4 address 192.3.6.1 255.255.255.0
 ipv6 address 2002:c003:400::2:1/112
 load-interval 30
 dot1q vlan 400 22
!
interface GigabitEthernet0/RP0/CPU0/7
!
interface GigabitEthernet0/RP0/CPU0/7.100
 description interface66 -> pe1-uut:GigabitEthernet0/RP0/CPU0/11.100
 mtu 1514
 ipv4 address 192.3.1.1 255.255.255.0
 ipv6 address 2002:c003:100::1/112
 load-interval 30
 dot1q vlan 100
!
interface GigabitEthernet0/RP0/CPU0/7.101
 description interface68 -> pe1-uut:GigabitEthernet0/RP0/CPU0/11.101
 mtu 1514
 ipv4 address 192.3.2.1 255.255.255.0
 ipv6 address 2002:c003:100::1:1/112
 load-interval 30
 dot1q vlan 101
!
interface GigabitEthernet0/RP0/CPU0/7.102
 description interface70 -> pe1-uut:GigabitEthernet0/RP0/CPU0/11.102
 mtu 1514
 ipv4 address 192.3.3.1 255.255.255.0
 ipv6 address 2002:c003:100::2:1/112
 load-interval 30
 dot1q vlan 102
!
interface TenGigE0/RP0/CPU0/0
 description interface31 -> pe1-uut:TenGigE0/RP0/CPU0/5
 mtu 1514
 ipv4 address 91.1.0.1 255.255.255.0
 ipv6 address 901:a01:1::1/112
 load-interval 30
!
interface TenGigE0/RP0/CPU0/1
 ipv4 address 109.1.0.1 255.255.255.0
 ipv6 address 1009:a01:1::1/112
!
router isis 100
 is-type level-2-only
 net 47.0001.0000.0000.0001.00
 nsf cisco
 nsf lifetime 120
 address-family ipv4 unicast
  metric-style wide
 !
 address-family ipv6 unicast
  metric-style wide
 !
 interface Loopback3
  passive
  address-family ipv4 unicast
  !
  address-family ipv6 unicast
  !
 !
 interface GigabitEthernet0/RP0/CPU0/5
  address-family ipv4 unicast
  !
  address-family ipv6 unicast
  !
 !
 interface GigabitEthernet0/RP0/CPU0/6.3
  address-family ipv4 unicast
  !
  address-family ipv6 unicast
  !
 !
 interface GigabitEthernet0/RP0/CPU0/7.102
  address-family ipv4 unicast
  !
  address-family ipv6 unicast
  !
 !
 interface TenGigE0/RP0/CPU0/1
  circuit-type level-2-only
  address-family ipv4 unicast
  !
  address-family ipv6 unicast
  !
 !
!

PE1 config:
hostname pe1-uut
logging console disable
vrf vpnv6
 address-family ipv4 unicast
  import route-target
   200:2
  !
  export route-target
   200:2
  !
 !
 address-family ipv6 unicast
  import route-target
   200:2
  !
  export route-target
   200:2
  !
 !
!
vrf vpnv4v6
 address-family ipv4 unicast
  import route-target
   100:1
  !
  export route-target
   100:1
  !
 !
 address-family ipv6 unicast
  import route-target
   100:1
  !
  export route-target
   100:1
  !
 !
!
line console
 timestamp disable
 exec-timeout 0 0
!
interface Loopback0
 ipv4 address 104.0.0.1 255.255.255.255
 ipv6 address 104::1/128
!
interface Loopback1
 vrf vpnv4v6
 ipv4 address 104.0.1.1 255.255.255.255
 ipv6 address 104:1::1/128
!
interface Loopback2
 vrf vpnv6
 ipv4 address 104.0.2.1 255.255.255.255
 ipv6 address 104:2::1/128
!
interface Loopback3
 ipv4 address 104.0.3.1 255.255.255.255
 ipv6 address 104:3::1/128
!
interface Loopback4
 ipv4 address 104.0.4.1 255.255.255.255
 ipv6 address 104:4::1/128
!
interface GigabitEthernet0/RP0/CPU0/6
 description interface34 -> ce1:GigabitEthernet0/RP0/CPU0/2
 mtu 1514
 vrf vpnv4v6
 ipv4 address 91.2.0.2 255.255.255.0
 ipv6 address 901:a02:2::2/112
 load-interval 30
!
interface GigabitEthernet0/RP0/CPU0/7
 description interface36 -> ce1:GigabitEthernet0/RP0/CPU0/3
 mtu 1514
 vrf vpnv6
 ipv4 address 91.3.0.2 255.255.255.0
 ipv6 address 901:a03:3::2/112
 load-interval 30
!
interface GigabitEthernet0/RP0/CPU0/8
 description interface38 -> ce1:GigabitEthernet0/RP0/CPU0/4
 mtu 1514
 vrf vpnv6
 ipv4 address 91.4.0.2 255.255.255.0
 ipv6 address 901:a03:4::2/112
 load-interval 30
!
interface GigabitEthernet0/RP0/CPU0/9
 description interface40 -> ce1:GigabitEthernet0/RP0/CPU0/5
 mtu 1514
 ipv4 address 91.5.0.2 255.255.255.0
 ipv6 address 901:a03:5::2/112
 load-interval 30
!
interface GigabitEthernet0/RP0/CPU0/10
!
interface GigabitEthernet0/RP0/CPU0/10.1
 description interface75 -> ce1:GigabitEthernet0/RP0/CPU0/6.1
 mtu 1514
 vrf vpnv4v6
 ipv4 address 192.3.4.2 255.255.255.0
 ipv6 address 2002:c003:400::2/112
 load-interval 30
 dot1q vlan 400 20
!
interface GigabitEthernet0/RP0/CPU0/10.2
 description interface77 -> ce1:GigabitEthernet0/RP0/CPU0/6.2
 mtu 1514
 vrf vpnv6
 ipv4 address 192.3.5.2 255.255.255.0
 ipv6 address 2002:c003:400::1:2/112
 load-interval 30
 dot1q vlan 400 21
!
interface GigabitEthernet0/RP0/CPU0/10.3
 description interface79 -> ce1:GigabitEthernet0/RP0/CPU0/6.3
 mtu 1514
 ipv4 address 192.3.6.2 255.255.255.0
 ipv6 address 2002:c003:400::2:2/112
 load-interval 30
 dot1q vlan 400 22
!
interface GigabitEthernet0/RP0/CPU0/11
!
interface GigabitEthernet0/RP0/CPU0/11.100
 description interface67 -> ce1:GigabitEthernet0/RP0/CPU0/7.100
 mtu 1514
 vrf vpnv4v6
 ipv4 address 192.3.1.2 255.255.255.0
 ipv6 address 2002:c003:100::2/112
 load-interval 30
 dot1q vlan 100
!
interface GigabitEthernet0/RP0/CPU0/11.101
 description interface69 -> ce1:GigabitEthernet0/RP0/CPU0/7.101
 mtu 1514
 vrf vpnv6
 ipv4 address 192.3.2.2 255.255.255.0
 ipv6 address 2002:c003:100::1:2/112
 load-interval 30
 dot1q vlan 101
!
interface GigabitEthernet0/RP0/CPU0/11.102
 description interface71 -> ce1:GigabitEthernet0/RP0/CPU0/7.102
 mtu 1514
 ipv4 address 192.3.3.2 255.255.255.0
 ipv6 address 2002:c003:100::2:2/112
 load-interval 30
 dot1q vlan 102
!
interface GigabitEthernet0/RP0/CPU0/12
 description interface61 -> ce3:GigabitEthernet0/RP0/CPU0/2
 ipv4 address 92.2.0.2 255.255.255.0
 ipv6 address 902:a02:2::2/112
!
interface GigabitEthernet0/RP0/CPU0/13
 description interface63 -> ce3:GigabitEthernet0/RP0/CPU0/3
 ipv4 address 92.3.0.2 255.255.255.0
 ipv6 address 902:a03:3::2/112
!
interface TenGigE0/RP0/CPU0/0
 description interface47 -> p1:Te0/0/0/3
 mtu 1514
 ipv4 address 13.1.0.1 255.255.255.0
 load-interval 30
!
interface TenGigE0/RP0/CPU0/1
 description interface49 -> p1:Te0/0/0/2
 mtu 1514
 ipv4 address 13.2.0.1 255.255.255.0
 load-interval 30
!
interface TenGigE0/RP0/CPU0/3
 vrf vpnv4v6
 ipv4 address 110.1.0.1 255.255.255.0
 ipv6 address 100a:a01:1::1/112
!
interface TenGigE0/RP0/CPU0/4
 description interface59 -> ce3:TenGigE0/RP0/CPU0/1
 ipv4 address 13.3.0.1 255.255.255.0
 ipv6 address 103:a03:1::1/112
!
interface TenGigE0/RP0/CPU0/5
 description interface32 -> ce1:TenGigE0/RP0/CPU0/0
 mtu 1514
 vrf vpnv4v6
 ipv4 address 91.1.0.2 255.255.255.0
 ipv6 address 901:a01:1::2/112
 load-interval 30
!

router isis 100
 is-type level-2-only
 net 47.0004.0000.0000.0004.00
 nsf cisco
 nsf lifetime 120
 address-family ipv4 unicast
  metric-style wide
  redistribute bgp 1
 !
 address-family ipv6 unicast
  metric-style wide
  redistribute bgp 1
 !
 interface Loopback3
  passive
  address-family ipv4 unicast
  !
  address-family ipv6 unicast
  !
 !
 interface GigabitEthernet0/RP0/CPU0/9
  address-family ipv4 unicast
  !
  address-family ipv6 unicast
  !
 !
 interface GigabitEthernet0/RP0/CPU0/10.3
  address-family ipv4 unicast
  !
  address-family ipv6 unicast
  !
 !
 interface GigabitEthernet0/RP0/CPU0/11.102
  address-family ipv4 unicast
  !
  address-family ipv6 unicast
  !
 !
!

Before applying isis configuration, the subinterface back to back ping works:
RP/0/RP0/CPU0:pe1-uut#ping vrf vpnv4v6 192.3.1.1
Fri Jan 30 13:02:19.207 UTC
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.3.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 3/3/4 ms
RP/0/RP0/CPU0:pe1-uut#ping vrf vpnv4v6 192.3.4.1
Fri Jan 30 13:02:25.854 UTC
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.3.4.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 3/3/4 ms
RP/0/RP0/CPU0:pe1-uut#                  

After applying isis, the subinterface ping failed:
RP/0/RP0/CPU0:pe1-uut#ping vrf vpnv4v6 192.3.4.1
Fri Jan 30 18:59:50.812 UTC
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.3.4.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
RP/0/RP0/CPU0:pe1-uut#

RP/0/RP0/CPU0:pe1-uut#ping vrf vpnv4v6 192.3.1.1
Fri Jan 30 19:00:15.512 UTC
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.3.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 3/3/4 ms
RP/0/RP0/CPU0:pe1-uut#

Conditions:
image info:
Refpoint = calvados/release@flex-xr-twig/2
Built By     : alyle
 Built On     : Wed Jan 28 14:45:07 EST 2015
 Build Host   : ott-lb-015
 Workspace    : /workspace2/alyle/ISIS
 Source Base  : ios_ena
 Devline      : flex-xr-twig
 Devline Type : ACME Project
 flex-xr-twig   EFR-00000295805   Project
 flex-xr        EFR-00000294743   Project
 ci-531         EFR-00000292004   Lineup
 ci-530         EFR-00000290307   Lineup
 default        EFR-00000289219   Lineup
RP/0/RP0/CPU0:ce1#                                          

I tried with the latest nightly flex-xr-twig image, the same issue is seen.
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