Switching

Hello folks,

I am just trying to figure out why my setup does not work like I expect it to do.
Maybe there are some limitations i missed, maybe some of the stuff works in another way (by design os whatever).

Please have look at my drawing, which is a usual classroom setup:

     vlan.11 172.23.11.10/24 (l3 in vlan vr11)
     vlan.12 172.23.12.10/24 (l3 in vlan vr12)
                
                SRX240 (switched)
                  |
                  |
        Trunk     |    ge-0/0/8 (both ends)
                  |
                  |
                EX4200
                  /\
                 /  \
    ge-0/0/6    /    \ ge-0/0/7
   vlan vr11   /      \  vlan vr12
             vr11    vr12
			 
172.23.11.100/24     172.23.12.100.0/24

I tried to setup the following on EX4200 switch:

- classify packets from vr11 to forwarding-class "test" by a MF classifier
- build a scheduler-map
- assign scheduler map
- rewrite marker with ieee802.1p defaults on egress trunk

When I generate traffic from vr11 to 172.23.11.10, the packets have to pass the switch (obviously).
Inspecting the outgoing interface (ge-0/0/8) statistics one can see transit packets in the expected
forwarding-class, but the packets are not assigned to the output queue. While using the pcap module
on the SRX, I cannot find any priotity bits set on incoming packets.
So i assume that the packets aren't rewritten with a marker.
What is wrong with my configuration?

### code for EX4200
set class-of-service schedulers nc transmit-rate percent 5
set class-of-service schedulers nc buffer-size percent 5
set class-of-service schedulers nc priority strict-high
set class-of-service schedulers test transmit-rate percent 20
set class-of-service schedulers test buffer-size percent 20
set class-of-service schedulers test priority strict-high
set class-of-service schedulers ef transmit-rate percent 30
set class-of-service schedulers ef buffer-size percent 30
set class-of-service schedulers ef priority strict-high
set class-of-service schedulers be transmit-rate percent 45
set class-of-service schedulers be buffer-size percent 45
set class-of-service schedulers be priority low

set class-of-service scheduler-maps test forwarding-class network-control scheduler nc
set class-of-service scheduler-maps test forwarding-class best-effort scheduler be
set class-of-service scheduler-maps test forwarding-class assured-forwarding scheduler test
set class-of-service scheduler-maps test forwarding-class expedited-forwarding scheduler ef

set class-of-service interfaces ge-0/0/8 scheduler-map test
set class-of-service interfaces ge-0/0/8 unit 0 rewrite-rules ieee-802.1 default
set class-of-service interfaces ge-0/0/10 scheduler-map test
set class-of-service interfaces ge-0/0/10 unit 0 classifiers ieee-802.1 default
set class-of-service interfaces ge-0/0/10 unit 0 rewrite-rules ieee-802.1 default
set class-of-service interfaces vlan unit 11 rewrite-rules ieee-802.1 default

set firewall family ethernet-switching filter base term vr11 from source-address 172.23.11.0/24
set firewall family ethernet-switching filter base term vr11 then forwarding-class expedited-forwarding
set firewall family ethernet-switching filter base term vr11 then loss-priority low
set firewall family ethernet-switching filter base term rest then accept

set interfaces ge-0/0/6 unit 0 family ethernet-switching port-mode access
set interfaces ge-0/0/6 unit 0 family ethernet-switching vlan members v11
set interfaces ge-0/0/6 unit 0 family ethernet-switching filter input base
set interfaces ge-0/0/8 unit 0 family ethernet-switching port-mode trunk
set interfaces ge-0/0/8 unit 0 family ethernet-switching vlan members all


## code on SRX
set class-of-service interfaces ge-0/0/1 unit 0 classifiers ieee-802.1 default
set class-of-service interfaces ge-0/0/1 unit 0 rewrite-rules ieee-802.1 default
set class-of-service interfaces ge-0/0/2 unit 0 classifiers ieee-802.1 default
set class-of-service interfaces ge-0/0/2 unit 0 rewrite-rules ieee-802.1 default
set class-of-service interfaces ge-0/0/8 unit 0 classifiers ieee-802.1 default
set class-of-service interfaces ge-0/0/8 unit 0 rewrite-rules ieee-802.1 default
set class-of-service interfaces ge-0/0/10 unit 0 classifiers ieee-802.1 default
set class-of-service interfaces ge-0/0/10 unit 0 rewrite-rules ieee-802.1 default

Statistical output on EX and SRX:

lab@exA-1> show interfaces statistics ge-0/0/8 detail | find "ss que"
  Egress queues: 8 supported, 4 in use
  Queue counters:       Queued packets  Transmitted packets      Dropped packets
    0 best-effort                    0                  381                    0
    1 assured-forw                   0                    0                    0
    5 expedited-fo                   0                 1125                    0
    7 network-cont                   0                    0                    0
  Queue number:         Mapped forwarding classes


lab@srxA-1> show interfaces statistics ge-0/0/8 detail |find "ss que"
  Egress queues: 8 supported, 4 in use
  Queue counters:       Queued packets  Transmitted packets      Dropped packets
    0 best-effort                    0                    0                    0
    1 expedited-fo                   0                    0                    0
    2 assured-forw                   0                    0                    0
    3 network-cont               37074                37074                    0

Any ideas, I am completely lost.

Thanks in advance,

Klaus

Hi Klaus,

One thing I notice is that your output from the SRX isn't going to show you the marked packets - you're looking at an egress queue for port ge-0/0/8.  That would be traffic FROM the SRX, hence why everything is Network Control - probably STP BPDUs or something similar.

The line: 

set class-of-service interfaces vlan unit 11 rewrite-rules ieee-802.1 default

will do nothing unless you're routing through the RVI vlan.11 on the EX4200 which I assume you're not from the diagram.

 Can you add the output of the following commands from your EX4200:

show class-of-service interfaces ge-0/0/8

show class-of-service interfaces ge-0/0/6

show interfaces queue ge-0/0/8

HI,

thanks for your replay.

I found my mistake on SRX, which is the forwarding device.

I missed to specifiy a classifier to sort the BA tagged packets to the right forwarding class. After I defined one, the packets got sorted to the correct queue.

Thanks

Klaus

Hi,

it was only a lab setup and the tests are month and month ago.

Sorry - I don't have any configs anymore.

Klaus