L2 MPLS VPN interworking

[kelleung]

According to Cisco document. I'm wondering why Cisco GSR series couldn't support ATM VP and port mode interworking. Is it a limitation of the technology/standard itself or simply the s/w or h/w issue of GSR router ?

http://www.cisco.com/en/US/customer/products/sw/iosswrel/ps1829/products_feature_guide09186a00801b2407.html

[atif-siddiqui]

Yes. this explains alot.

ok what about GSR, I know that only E5 cards will support, and we have that still did not work.

Thanks a million !

[atif-siddiqui]

can you suggest any other options that we can use, instead of local ethernet switching.

Tx

[atif-siddiqui]

Yes I tried with SIP-400's on 7606 and it works good.

Thanks for your help here.

Atif.

[Harold Ritter]

Could you try using the same vlan under the two interfaces.

Regards,

[atif-siddiqui]

Here it is:

I changed both interfaces to same VLAN. Still not able to ping.

interface GigabitEthernet1/1/2.3700

encapsulation dot1Q 3700

no ip directed-broadcast

end

router1#sh run interface gig 1/1/0.3600

interface GigabitEthernet1/1/0.3600

encapsulation dot1Q 3700

no ip directed-broadcast

end

VLAN trunk interfaces for VLAN ID 3700:

GigabitEthernet1/1/0.3600 (3700)

Total 39 packets, 1424 bytes input

Total 16 packets, 2914 bytes output

GigabitEthernet1/1/2.3700 (3700)

Total 240 packets, 16166 bytes input

Total 817 packets, 291688 bytes output

CE1:

sh run interface gi6/2.3600

interface GigabitEthernet6/2.3600

encapsulation dot1Q 3700

ip address 10.1.1.2 255.255.255.252

end

Ce2:

sh run interface gi6/2.3600

interface GigabitEthernet6/2.3600

encapsulation dot1Q 3700

ip address 10.1.1.1 255.255.255.252

end

Ce1 --ping -- ce2:

Ce1#ping 10.1.1.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2 seconds:

.....

Success rate is 0 percent (0/5)

PE2#

[Rahul Kachalia]

Will you be able to collect following logs, after clearing counters and then sending 50 ping pkts

- exec slot s controller event clear

- exec slot s controller event

- s int g1/1/0

- s int g1/1/2

- s connect

I assume you are running 12.0(32)SY code on GSR...

thanks,

rahul.

[atif-siddiqui]

I will soon post the results here.

I am running 12.0(32)SY3 code on the GSR with E5 Gige cards.

It worked on 7606 with SIP-400 as Harold suggested.

Atif.

[atif-siddiqui]

Configuration:

PE2 <--> GW <--> PE3

PE2#sh run interface gigabitEthernet 6/2.3600

interface GigabitEthernet6/2.3600

description Local Ethernet Switch Test

encapsulation dot1Q 3700

ip address 172.16.10.1 255.255.255.252

GW#sh ru interface Gi1/1/0.3600

interface GigabitEthernet1/1/0.3600

description **Local eth switch test** connect to PE2 g6/2.3600

encapsulation dot1Q 3700

no ip directed-broadcast

GW#sh ru interface Gi1/1/2.3700

interface GigabitEthernet1/1/2.3700

description **Local eth switch test** connect to PE3 g6/2

encapsulation dot1Q 3750

no ip directed-broadcast

PE3#sh run interface gigabitEthernet 6/2.3700

interface GigabitEthernet6/2.3700

description description Local Ethernet Switch Test ** conn. to P4 g1/1/2.3700

encapsulation dot1Q 3750

ip address 176.16.10.2 255.255.255.252

[atif-siddiqui]

RESULTS:

PE2#ping

Protocol [ip]:

Target IP address: 172.16.10.2

Repeat count [5]: 50

Datagram size [100]:

Timeout in seconds [2]:

Extended commands [n]:

Sweep range of sizes [n]:

Type escape sequence to abort.

Sending 50, 100-byte ICMP Echos to 172.16.10.2, timeout is 2 seconds:

..................................................

Success rate is 0 percent (0/50)

PE2#

GW: (P GSR )

GW#exec slot 1 s controller event

========= Line Card (Slot 1) =========

Switching Stats

Packets punt to RP: 42

HW engine punt: 2

HW engine reject: 40

RX HW Engine Reject Counters

Unrecognized Protocol ID: 32

IP TTL Expired: 8

GW#

GW#sh in

GW#sh int

GW#sh interfaces gi

GW#sh interfaces gigabitEthernet 1/1/0

GigabitEthernet1/1/0 is up, line protocol is up

Hardware is GigabitEthernet, address is 001a.e390.b076 (bia 001a.e390.b076)

MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, rely 255/255, load 1/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full Duplex, 1000Mbps, link type is force-up, media type is LX

output flow-control is on, input flow-control is on

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:09, output 00:00:09, output hang never

Last clearing of "show interface" counters 00:03:46

Queueing strategy: fifo

Output queue 0/40, 0 drops; input queue 0/75, 0 drops

Available Bandwidth 1000000 kilobits/sec

30 second input rate 0 bits/sec, 0 packets/sec

30 second output rate 0 bits/sec, 0 packets/sec

68 packets input, 12364 bytes, 0 no buffer

Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog, 16 multicast, 0 pause input

14 packets output, 4636 bytes, 0 underruns

Transmitted 0 broadcasts

0 output errors, 0 collisions, 0 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier, 0 pause output

0 output buffer failures, 0 output buffers swapped out

GW#s

% Type "show ?" for a list of subcommands

GW#

GW#

GW#

GW#sh int

GW#sh interfaces gi

GW#sh interfaces gigabitEthernet 1/1/2

GigabitEthernet1/1/2 is up, line protocol is up

Hardware is GigabitEthernet, address is 001a.e390.b078 (bia 001a.e390.b078)

MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, rely 255/255, load 1/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full Duplex, 1000Mbps, link type is force-up, media type is SX

output flow-control is on, input flow-control is on

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:01, output 00:00:01, output hang never

Last clearing of "show interface" counters 00:03:57

Queueing strategy: fifo

Output queue 0/40, 0 drops; input queue 0/75, 0 drops

Available Bandwidth 1000000 kilobits/sec

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

8 packets input, 3056 bytes, 0 no buffer

Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog, 8 multicast, 0 pause input

59 packets output, 10040 bytes, 0 underruns

Transmitted 0 broadcasts

0 output errors, 0 collisions, 0 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier, 0 pause output

0 output buffer failures, 0 output buffers swapped out

GW#

GW#

GW#sho con

GW#sho connect

ID Name Segment 1 Segment 2 State Description

============================================================================================

5 eth_sw Gi1/1/0.3600 Gi1/1/2.3700 UP

[Rahul Kachalia]

Stats are bit confusing. On GSR I see pkts coming in from G1/1/0 and going out G1/1/2 intf, now was that an ICMP pkts I m not sure because traffic was also dropped by LC.

There are couple of things you can try to identify the problem:

Step1:

- Bypass GSR, connect PE2 and PE3 back to back with same VLAN id and ping each other and that should work. If not then resolve the problem.

Step2:

- Turn on "debug ip icmp" on both PE routers. Hookup GSR between PE2 and PE3, ping again and see if it works. Ping from each side of PE and see one-way traffic works. If it still fails try step3.

Step3:

Change VLAN ID to anything below 1000 ID on all 3 boxes. (keep the icmp debugs on)

And if it still fails clear the intf counters and recollect stats from intf and LC. This time if you can also collect following show cmd would be bit helpful

s control tof wahoo phb 0 0 0

Ethernet Local switching is supported on GSR/E5 LC, definitely some basic stuff is broken...

thanks,

rahul.