При использовании технологии EoMPLS между L3-коммутаторами WS-C6504-E и ME-3600X-24FS-M , наблюдаются потери пакетов в размере 10-15% при попытке достучатся по протоколу pppoe(пробовали и static IP) от рабочей станци до бордера.
На 6504 в сторону бордера настроен сабинтерфейс, а на 3600 xconnect забирает траффик с влан-интерфейса.
При этом MPLS-траффик в global table и vrf'е(L3VPN) ходит без потерь, те проблема именно в AToM'ом траффике.
Топология сети и конфиги представлены ниже.
Просьба помочь, если кто-нибудь сталкивался с подобной проблемой (Юзернейм nitroyar посвящен в вопрос и готов дополнить/ответить на ваши вопросы)
Конфиги:
Cat 6504
interface TenGigabitEthernet1/4
mtu 8000
ip address 10.76.0.106 255.255.255.252
logging event link-status
mpls mtu 1550
mpls label protocol ldp
mpls ip
interface GigabitEthernet1/3.1111
encapsulation dot1Q 1111
xconnect 10.76.0.1 111 pw-class pppoe
pseudowire-class pppoe
encapsulation mpls
sh mpls l2transport vc 111 det
Local interface: Gi1/3.1111 up, line protocol up, Eth VLAN 1111 up
Interworking type is Ethernet
Destination address: 10.76.0.1, VC ID: 111, VC status: up
Output interface: Te1/4, imposed label stack {17}
Preferred path: not configured
Default path: active
Next hop: 10.76.0.105
Load Balance: none
Flow Label: Disabled
Create time: 05:13:22, last status change time: 05:13:21
Signaling protocol: LDP, peer 10.76.0.1:0 up
Targeted Hello: 10.76.0.2(LDP Id) -> 10.76.0.1, LDP is UP
Status TLV support (local/remote) : enabled/not supported
LDP route watch : enabled
Label/status state machine : established, LruRru
Last local dataplane status rcvd: No fault
Last local SSS circuit status rcvd: No fault
Last local SSS circuit status sent: No fault
Last local LDP TLV status sent: No fault
Last remote LDP TLV status rcvd: Not sent
Last remote LDP ADJ status rcvd: No fault
MPLS VC labels: local 22, remote 17
Group ID: local 0, remote 0
MTU: local 1550, remote 1550
Remote interface description:
Sequencing: receive disabled, send disabled
Control Word: Off (configured: autosense)
VC statistics:
transit packet totals: receive 18896, send 22250
transit byte totals: receive 11066229, send 17872490
transit packet drops: receive 0, send 0
ME3600
interface TenGigabitEthernet0/2
port-type nni
no switchport
mtu 8000
ip address 10.76.0.105 255.255.255.252
mpls mtu 1550
mpls label protocol ldp
mpls ip
interface Vlan1111
mtu 1550
no ip address
xconnect 10.76.0.2 111 pw-class pppoe
end
pseudowire-class pppoe
encapsulation mpls
Local interface: Vl1111 up, line protocol up, Eth VLAN 1111 up
Interworking type is Ethernet
Destination address: 10.76.0.2, VC ID: 111, VC status: up
Output interface: Te0/2, imposed label stack {22}
Preferred path: not configured
Default path: active
Next hop: 10.76.0.106
Create time: 05:17:56, last status change time: 05:16:31
Signaling protocol: LDP, peer 10.76.0.2:0 up
Targeted Hello: 10.76.0.1(LDP Id) -> 10.76.0.2
Status TLV support (local/remote) : enabled/not supported
Label/status state machine : established, LruRru
Last local dataplane status rcvd: no fault
Last local SSS circuit status rcvd: no fault
Last local SSS circuit status sent: no fault
Last local LDP TLV status sent: no fault
Last remote LDP TLV status rcvd: not sent
MPLS VC labels: local 17, remote 22
Group ID: local 0, remote 0
MTU: local 1550, remote 1550
Remote interface description: CN_10.76.0.2_Te1/3.1111 to BRAS
Sequencing: receive disabled, send disabled
VC statistics:
packet totals: receive 22648, send 20967
byte totals: receive 18187297, send 12609294
packet drops: receive 0, send 0
Тест
ping X.X.X.X rep 100
Type escape sequence to abort.
!!!!!.!!!!!!!.!!!!!.!!!!!.!!!!!.!!!!!.!!!!!.!!!!!.!!!!!.!!!!!.!!!!!.!!
!!!.!!!!!.!!!!!.!!!!!.!!!!!.!!
Success rate is 84 percent (84/100), round-trip min/avg/max = 1/1/31 ms
ping X.X.X.X rep 100 si 1500
Type escape sequence to abort.
!!.!!.!!.!!.!!.!!.!!.!!.!!.!!!!!!.!!!.!!.!!.!!.!!.!!.!!.!!.!!.!!.!!.!!
.!!.!!.!!.!!.!!.!!.!!.!!.!!.!!
Success rate is 69 percent (69/100), round-trip min/avg/max = 1/3/33 ms
