CH-E1 LSQ 512k Subrate Juniper -> Cisco IP Connectivity Problem

[Erik_TSI]

Hi there,

this is my lab setup:

<Cisco_2921> ----- CH-E1 (512k) ----- <Juniper_M320>

Cisco Interface Config:

controller E1 0/0/0
 channel-group 1 timeslots 1-8
 no shutdown
!
interface Serial 0/0/0:1
 description *** ce57 : 0000400001.000172 : ce1 ***
 bandwidth 1984
 no ip address
 encapsulation frame-relay IETF
 frame-relay lmi-type ansi
 keepalive 5
 load-interval 30
 no shutdown
!
interface Serial 0/0/0:1.100 point-to-point
 description *** PE223 : 1/2/2 ***
 bandwidth 512
 ip address 172.16.1.2 255.255.255.252
 frame-relay interface-dlci 100 ietf
 ntp broadcast client

Juniper Interface Config:

interfaces {
   ce1-1/2/2 {
      e1-options {
         framing g704;
      }
      partition 1 timeslots 1-8 interface-type ds;
   }
   replace: ds-1/2/2:1 {
      description "*** ce1 : ce57 : #COUNTRY_CODE#,   ***";
      no-keepalives;
      dce;
      encapsulation frame-relay;
      lmi {
         lmi-type ansi;
      }
      unit 100 {
         description "*** ce57 : 030049 ***";
         point-to-point;
         bandwidth 512k;
         dlci 100;
         family mlfr-end-to-end {
            bundle lsq-0/1/0.20;
         }
      }
   }
   lsq-0/1/0 {
      per-unit-scheduler;
      replace: unit 20 {
         description "*** ce57 : 030049 ***";
         bandwidth 512k;
         encapsulation multilink-frame-relay-end-to-end;
         link-layer-overhead 1.6;
         family inet {
            address 172.16.1.1/30;
         }
      }
   }
}

I'm using a lsq-interfce because i need to apply a fragmentation-map to the lsq-interface for packet fragmentation to support quality of service for voice over the low speed link (512k).

Just for the background, this is the class of service config:

class-of-service {
   schedulers {
      replace: sch-EC-lsq-030049-lsq-0.1.0-20 {
         transmit-rate percent 18;
         buffer-size percent 18;
         priority low;
      }
      replace: sch-ST-lsq-030049-lsq-0.1.0-20 {
         transmit-rate percent 24;
         buffer-size percent 24;
         priority high;
      }
      replace: sch-BU-lsq-030049-lsq-0.1.0-20 {
         transmit-rate percent 18;
         buffer-size percent 18;
         priority high;
      }
      replace: sch-VO-lsq-030049-lsq-0.1.0-20 {
         transmit-rate percent 40;
         buffer-size percent 40;
         priority strict-high;
      }
   }
   scheduler-maps {
      scm-lsq-030049-lsq-0.1.0-20 {
         forwarding-class Economy scheduler sch-EC-lsq-030049-lsq-0.1.0-20;
         forwarding-class Business scheduler sch-BU-lsq-030049-lsq-0.1.0-20;
         forwarding-class Stream scheduler sch-ST-lsq-030049-lsq-0.1.0-20;
         forwarding-class Voice scheduler sch-VO-lsq-030049-lsq-0.1.0-20;
      }
   }
   fragmentation-maps {
      frm-lsq-030049-lsq-0.1.0-20 {
         forwarding-class {
            Economy {
               fragment-threshold 320;
            }
            Stream {
               fragment-threshold 320;
            }
            Business {
               fragment-threshold 320;
            }
            Voice {
               no-fragmentation;
            }
         }
      }
   }
   interfaces {
      replace: ds-1/2/2:1 {
         scheduler-map scm-lsq-030049-lsq-0.1.0-20;
      }
      replace: lsq-0/1/0 {
         unit 20 {
            scheduler-map scm-lsq-030049-lsq-0.1.0-20;
            fragmentation-map frm-lsq-030049-lsq-0.1.0-20;
         }
      }
   }
}

OK, that being said - here is the problem:

Cisco:

Router#show interfaces Serial0/0/0:1   
Serial0/0/0:1 is up, line protocol is up
  Hardware is DSX1
  Description: *** ce57 : 0000400001.000172 : ce1 ***
  MTU 1500 bytes, BW 1984 Kbit/sec, DLY 20000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation FRAME-RELAY IETF, loopback not set
  Keepalive set (5 sec)
  LMI enq sent  35974, LMI stat recvd 33986, LMI upd recvd 0, DTE LMI up
  LMI enq recvd 0, LMI stat sent  0, LMI upd sent  0
  LMI DLCI 0  LMI type is ANSI Annex D  frame relay DTE  segmentation inactive
  FR SVC disabled, LAPF state down
  Broadcast queue 0/64, broadcasts sent/dropped 2838/1, interface broadcasts 0
  Last input 00:00:04, output 00:00:04, output hang never
  Last clearing of "show interface" counters 2d02h
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: weighted fair
  Output queue: 0/1000/64/0 (size/max total/threshold/drops)
     Conversations  0/1/256 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
     Available Bandwidth 1488 kilobits/sec
  30 second input rate 0 bits/sec, 0 packets/sec
  30 second output rate 0 bits/sec, 0 packets/sec
     35471 packets input, 642481 bytes, 0 no buffer
     Received 0 broadcasts, 16 runts, 0 giants, 0 throttles
     6917 input errors, 34 CRC, 0 frame, 6883 overrun, 0 ignored, 0 abort
     38922 packets output, 1490989 bytes, 0 underruns
     0 output errors, 0 collisions, 341 interface resets
     0 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out
     9 carrier transitions
  Timeslot(s) Used:1-8, SCC: 0, Transmitter delay is 0 flags

Router#sh ip int brief
Interface                            IP-Address      OK? Method    Status                             Protocol
GigabitEthernet0/0         unassigned      YES NVRAM  administratively down down   
GigabitEthernet0/1         unassigned      YES NVRAM  administratively down down   
GigabitEthernet0/2         unassigned      YES NVRAM  administratively down down   
Serial0/0/0:1                    unassigned      YES manual   up                                    up     
Serial0/0/0:1.100            172.16.1.2        YES manual   up                                    up     
Router#ping 172.16.1.2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.1.2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
Router#

Juniper:

xxx@dssd-pe223> show interfaces lsq-0/1/0.20
  Logical interface lsq-0/1/0.20 (Index 87) (SNMP ifIndex 256)
    Description: *** ce57 : 030049 ***
    Flags: Point-To-Point SNMP-Traps 0x4000 Encapsulation: Multilink-FR
    Last flapped: 2011-07-07 15:41:10 CEST (00:03:48 ago)
    Bandwidth: 512kbps
    Bundle links information:
      Active bundle links       1
      Removed bundle links      0
      Disabled bundle links     0
    Statistics         Frames        fps         Bytes          bps
    Bundle:
      Multilink:
        Input :            13          0          2046            0
        Output:            10          0          1080            0
      Network:
        Input :            10          0          1000            0
        Output:            10          0          1000            0
    Link:
      ds-1/2/2:1.100
        Up time: 00:03:49
        Input :            13          0          2046            0
        Output:            10          0          1080            0
    Protocol inet, MTU: 1500
      Addresses, Flags: Is-Preferred Is-Primary
        Destination: 172.16.1.0/30, Local: 172.16.1.1

xxx@dssd-pe223> ping 172.16.1.1
PING 172.16.1.1 (172.16.1.1): 56 data bytes
64 bytes from 172.16.1.1: icmp_seq=0 ttl=64 time=0.165 ms
64 bytes from 172.16.1.1: icmp_seq=1 ttl=64 time=0.030 ms
64 bytes from 172.16.1.1: icmp_seq=2 ttl=64 time=0.028 ms
^C
--- 172.16.1.1 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max/stddev = 0.028/0.074/0.165/0.064 ms

xxx@dssd-pe223>

I'm not able to bring any ip traffic over the link. Layer 2 is up.

Any Ideas?

[aarseniev]

Hello,

Your JNPR side is set up with FRF.16 (MLFR) whereas CSCO side uses plain Frame Relay.

Please check in CSCO Feature Navigator if MLFR is supported in your IOS image and then configure FRF.16 on CSCO side.

HTH

Rgds

Alex

[Erik_TSI]

Hi, thanks for your reply.

From my point of view i'm not configuring FRF.16 (MLFR) -> encapsulation multilink-frame-relay-uni-nni

I'm configuring FRF.15 (MLFR) -> multilink-frame-relay-end-to-end

I just have one CH-E1 connection to the cisco where i only use the timeslots 1-8. Therefore no multilink-bundle in that sense. For the cisco this is just a plain Frame Relay connection.

The Cisco Config should be correct.

[aarseniev · Accepted solution]

Hello there,

Yes, it's FRF.15 of course

See http://www.broadband-forum.org/technical/download/FRF.15/frf15.pdf page 8

However, the point still stands: there is a Fragmentation header after NLPID which must be interpreted correctly on both ends. Therefore CSCO, having a plain FR config , cannot dissect Fragmentation header properly.

You can try FRF.12 config on CSCO since FRF.15 encapsulation is compatible with FRF.12:

interface Serial 0/0/0:1
frame-relay fragment 320 end-to-end

HTH

Rgds

Alex 

[Erik_TSI]

Hi there,

thats it! Thx!

But there´s one strange thing. I forgot to post this part of the Cisco Config which i used:

map-class frame-relay cos-frm-lsq-030049-e1-0.0.0-1-100
 frame-relay fragment 320
!
interface Serial 0/0/0:1.100 point-to-point
 frame-relay interface-dlci 100 ietf
  class cos-frm-lsq-030049-e1-0.0.0-1-100

Whith this configured, it does not work.

With your statement on the Serial Main Interface it works:

interface Serial 0/0/0:1
frame-relay fragment 320 end-to-end

Router#sh ip int brief
Interface                  IP-Address      OK? Method Status                Protocol
GigabitEthernet0/0         unassigned      YES unset  administratively down down
GigabitEthernet0/1         unassigned      YES unset  administratively down down
GigabitEthernet0/2         unassigned      YES unset  administratively down down
Serial0/0/0:1              unassigned      YES manual up                    up  
Serial0/0/0:1.100          172.16.1.2      YES manual up                    up  
Router#ping 172.16.1.2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.1.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 8/10/12 ms
Router#ping 172.16.1.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/5/8 ms
Router#

Thanks, Anyway.

Cheers

Erik

[agutierrez]

I'm having same issue , with cisco C2600 Software (C2600-I-M), Version 12.2(8)T5, but this kind of box do not have "fragment 320 end-to-end" option just

Juniper(config-if)#frame-relay ?
  address-reg            ELMI address registration
  broadcast-queue        Define a broadcast queue and transmit rate
  class                  Define a map class on the interface
  congestion-management  Enable Frame Relay congestion management
  de-group               Associate a DE group with a DLCI
  interface-dlci         Define a DLCI on an interface/subinterface
  interface-queue        configure PVC interface queueing
  intf-type              Configure a FR DTE/DCE/NNI interface
  inverse-arp            Enable/disable inverse ARP on a DLCI
  ip                     Frame Relay Internet Protocol config commands
  lmi-n391dte            set full status polling counter
  lmi-n392dce            LMI error threshold
  lmi-n392dte            LMI error threshold
  lmi-n393dce            set LMI monitored event count
  lmi-n393dte            set LMI monitored event count
  lmi-t392dce            set DCE polling verification timer
  lmi-type               Use CISCO-ANSI-CCITT type LMI
  local-dlci             Set source DLCI when LMI is not supported
  map                    Map a protocol address to a DLCI address
  multicast-dlci         Set DLCI of a multicast group
  payload-compression    Use payload compression
  policing               Enable Frame Relay policing
  priority-dlci-group    Define a priority group of DLCIs
  qos-autosense          enable QOS autosense
  route                  frame relay route for pvc switching
  traffic-shaping        Enable Frame Relay Traffic Shaping
  traps-maximum          set max traps FR generates at link up or when getting
                         LMI Full Status message

Juniper(config-if)#frame-relay

could you help me on this, thank you.

Alfredo

[agutierrez]

Hi All, upgraded CIsco box we could able to do this configuration, thank you.

Alfredo