[c-nsp] reacheability issue in MEL link

[Ahmed Mohamed]

Hello,

this is a real life problem still occuring, and have no idea what may be
causing it ..

we are providing an internet direct service to our customer vial MEL (Metro
Ethernet Link)

CE (CS-7206 VXR) fe2/0.36 ------------------Etherlink(local
carrier)---------------- WS-3759G-24TS--PE(CS-7000)

the solution is providied using a carrier to link the customer CE to an
aggregated switch, using Metro Ethernet
configuring vlan 36 and using dot1q encapsulation
then from the aggregating switch to the PE router using also encapsulation
dot1q for vlan36

all interfaces are up-up , and still ping fails !!

i tried everything, resetting ports, switches, reconfigure interfaces ..etc.
still no joy

any idea what could be causing the problem ?

========================================================================
CE:
-----
interface FastEthernet2/0.36
 bandwidth 61440
 encapsulation dot1Q 36
 ip address 57.78.2.6 255.255.255.252
========================================================================
Agg. switch:
------------------
interface GigabitEthernet1/0/9
 switchport trunk encapsulation dot1q
 switchport trunk native vlan 3109
 switchport trunk allowed vlan 36,3109
 switchport mode trunk
 switchport nonegotiate
 duplex full
 speed 100
 mls qos trust cos
 spanning-tree bpdufilter enable
========================================================================
PE:
------
 interface FastEthernet5/1/1.36
 bandwidth 61440
 encapsulation dot1Q 36
 ip address 57.78.2.5 255.255.255.252
 no ip redirects
 no ip proxy-arp
 no ip route-cache
 no cdp enable
========================================================================
bmil305#sh int FastEthernet5/1/1.36
FastEthernet5/1/1.36 is up, line protocol is up <<<<<<
Hardware is cyBus FastEthernet Interface, address is 0003.fe91.b8a9 (bia
0003.fe91.b8a9)
  Internet address is 57.78.2.5/30
  MTU 1500 bytes, BW 61440 Kbit, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation 802.1Q Virtual LAN, Vlan ID  36.
  ARP type: ARPA, ARP Timeout 04:00:00
========================================================================
pmil2534#sh int Fa2/0.36
FastEthernet2/0.36 is up, line protocol is up  <<<<<<
  Hardware is i82543 (Livengood), address is 0022.be8b.1038 (bia
0022.be8b.1038)
  Description: --- To bmil305 - FE5/1/1.5
  Internet address is 57.78.2.6/30
  MTU 1500 bytes, BW 61440 Kbit, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation 802.1Q Virtual LAN, Vlan ID  36.
========================================================================
ping pe to CE fails:
----------------------------
bmil305#ping 57.78.2.6   <<<<<<,
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 57.78.2.6, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
========================================================================
PE to internet (google) successfully:
------------------------------------------------------
bmil305#ping 216.239.59.147 source fast 5/1/1.36 repeat 100 size 500
Type escape sequence to abort.
Sending 100, 500-byte ICMP Echos to 216.239.59.147, timeout is 2 seconds:
Packet sent with a source address of 57.78.2.5
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Success rate is 100 percent (100/100), round-trip min/avg/max = 36/40/112 ms
========================================================================