[j-nsp] Multilink Frame Relay between Juniper M20 and Cisco 2621
Nilesh Khambal
nkhambal at juniper.net
Fri Aug 20 18:38:35 EDT 2010
Hi Jim,
In FRF.16, you bundle multiple DLCIs on a single bundle. The bundle is
mapped to multiple physical links. You Juniper configuration reflect the
correct the way of enabling FRF.16. However, I don't think your cisco side
is enabled correctly. On Cisco you have created 2 different bundles MFR0 and
MFR1 and you have assigned the physical links serial0/0 and serial0/1 to
these 2 different bundles. On juniper side, same bundle, ls-3/0/0:0, is
assigned to the 2 t1- links. This looks like a mis-config to me.
I would suggest fixing the configuration from Cisco side. Please do share
this configuration on the Cisco community to confirm if my above observation
is correct.
Another thing is both sides are enabled in DCE mode. One side should DCE
while other should be DTE for back to back connection.
Thanks,
Nilesh.
On 8/20/10 9:34 AM, "Jim Lucas" <lists at cmsws.com> wrote:
> First off, sorry for such a long email. But I figured I would give as much
> information as possible upfront to try and give a clear picture about what I
> have and what I am currently running.
>
> Central Office Equipment:
> Juniper M20 running v7.5R1.12
> 1x Link Services module (ls-3/0/0)
>
> Customer Equipment:
> Cisco 2611 running c2600-ipbase-mz.124-23
> 2x Eth (e0/0, e0/1)
> 4x T1 wic (s0/0, s0/1, s1/0, s1/1)
>
> The following is the important parts of the config of the Cisco router
>
> interface MFR0
> description my interface
> no ip address
> frame-relay lmi-type ansi
> frame-relay intf-type dce
>
> interface MFR0.16 point-to-point
> ip address 66.39.177.130 255.255.255.252
> no cdp enable
> frame-relay interface-dlci 16 IETF
>
> interface MFR1
> description Loop2
> no ip address
> load-interval 30
> frame-relay lmi-type ansi
>
> interface MFR1.16 point-to-point
> ip address 66.39.177.126 255.255.255.252
> no cdp enable
> frame-relay interface-dlci 16 IETF
>
> interface Ethernet0/0
> ip address 66.39.177.133 255.255.255.252
> half-duplex
>
> interface Serial0/0
> no ip address
> encapsulation frame-relay MFR0
> no arp frame-relay
>
> interface Serial0/1
> no ip address
> encapsulation frame-relay MFR1
> no arp frame-relay
>
> If I place a cross over cable connecting S0/0 and S0/1, all the links come up.
> So I am pretty sure that I have it all configured correctly. I think the
> problem is with my Juniper setup, hence the reason I am posting this here.
>
>
>
>
> Here is my Juniper config:
>
>> show configuration chassis fpc 3 pic 0
> mlfr-uni-nni-bundles 32;
>
>> show configuration interfaces t1-1/1/0:0
> description "Bendtel Test leg #1";
> encapsulation multilink-frame-relay-uni-nni;
> lmi {
> lmi-type ansi;
> }
> unit 0 {
> family mlfr-uni-nni {
> bundle ls-3/0/0:0;
> }
> }
>
>> show configuration interfaces t1-1/0/0:19
> description "Bendtel Test leg #2";
> encapsulation multilink-frame-relay-uni-nni;
> lmi {
> lmi-type ansi;
> }
> unit 0 {
> family mlfr-uni-nni {
> bundle ls-3/0/0:0;
> }
> }
>
>> show configuration interfaces ls-3/0/0:0
> dce;
> encapsulation multilink-frame-relay-uni-nni;
> unit 16 {
> dlci 16;
> family inet {
> address 66.39.177.129/30;
> }
> }
> unit 17 {
> dlci 17;
> family inet {
> address 10.100.100.1/30;
> }
> }
>
> Here is the current status of all these interfaces
>
>> show interfaces ls-3/0/0:0
> Physical interface: ls-3/0/0:0, Enabled, Physical link is Down
> Interface index: 349, SNMP ifIndex: 953
> Link-level type: Multilink-FR-UNI-NNI, MTU: 1508
> Device flags : Present Running
> Interface flags: Hardware-Down Link-Layer-Down Point-To-Point SNMP-Traps
> Last flapped : 2010-08-13 19:39:56 GMT (6d 20:20 ago)
> Multilink Frame Relay UNI NNI bundle options:
> Device type DCE
> MRRU 1508
> Fragmentation threshold 0
> Red differential delay limit 10
> Yellow differential delay limit 6
> Red differential delay action Remove link
> Reassembly drop timer 0
> Links needed to sustain bundle 1
> LIP Hello timer 10
> Acknowledgement timer 4
> Acknowledgement retries 2
> Bundle class A
> LMI type ANSI
> T391 LIV polling timer 10
> T392 polling verification timer 15
> N391 full status polling count 6
> N392 error threshold 3
> N393 monitored event count 4
> Input rate : 0 bps (0 pps)
> Output rate : 0 bps (0 pps)
> Multilink Frame Relay UNI NNI bundle statistics:
> Frames fps Bytes bps
>
> Fragments:
> Input : 0 0 0 0
> Output: 0 0 0 0
> Packets:
> Input : 0 0 0 0
> Output: 0 0 0 0
> Multilink Frame Relay UNI NNI bundle links information:
> Active bundle links 0
> Removed bundle links 2
> Disabled bundle links 0
> Multilink Frame Relay UNI NNI active bundle links statistics:
> Frames fps Bytes bps
> t1-1/0/0:19.0 <-- down
> Input : 0 0 0 0
> Output: 0 0 0 0
> Current differential delay 0.0 ms
> Recent high differential delay 0.0 ms
> Times over red diff delay 0
> Times over yellow diff delay 0
> LIP:add_lnk lnk_ack lnk_rej hello hel_ack lnk_rem rem_ack
> Rcv: 0 0 0 0 0 0 0
> Xmt: 15 0 0 0 0 0 0
> t1-1/1/0:0.0 <-- down
> Input : 0 0 0 0
> Output: 0 0 0 0
> Current differential delay 0.0 ms
> Recent high differential delay 0.0 ms
> Times over red diff delay 0
> Times over yellow diff delay 0
> LIP:add_lnk lnk_ack lnk_rej hello hel_ack lnk_rem rem_ack
> Rcv: 0 0 0 0 0 0 0
> Xmt: 197 0 0 0 0 0 0
>
> Logical interface ls-3/0/0:0.16 (Index 230) (SNMP ifIndex 954)
> Flags: Device-Down Point-To-Point SNMP-Traps Encapsulation:
> Multilink-FR-UNI-NNI
> Statistics Frames fps Bytes bps
> Bundle:
> Fragments:
> Input : 0 0 0 0
> Output: 0 0 0 0
> Packets:
> Input : 0 0 0 0
> Output: 0 0 0 0
> Protocol inet, MTU: 1500
> Flags: None
> Addresses, Flags: Dest-route-down Is-Preferred Is-Primary
> Destination: 66.39.177.128/30, Local: 66.39.177.129
>
> Logical interface ls-3/0/0:0.17 (Index 305) (SNMP ifIndex 955)
> Flags: Device-Down Point-To-Point SNMP-Traps Encapsulation:
> Multilink-FR-UNI-NNI
> Bandwidth: 625152kbps
> Statistics Frames fps Bytes bps
> Bundle:
> Fragments:
> Input : 0 0 0 0
> Output: 0 0 0 0
> Packets:
> Input : 0 0 0 0
> Output: 0 0 0 0
> Protocol inet, MTU: 1500
> Flags: None
> Addresses, Flags: Dest-route-down Is-Preferred Is-Primary
> Destination: 10.100.100.0/30, Local: 10.100.100.1
>
>
>> show interfaces t1-1/1/0:0
> Physical interface: t1-1/1/0:0, Enabled, Physical link is Up
> Interface index: 444, SNMP ifIndex: 310
> Description: Bendtel Test leg #1
> Link-level type: Multilink-FR-UNI-NNI, MTU: 1518, Clocking: Internal, Speed:
> T1, Loopback: None, FCS: 16, Mode: C/Bit parity,
> Framing: ESF
> Device flags : Present Running
> Interface flags: Point-To-Point SNMP-Traps Internal: 0x4000
> Link flags : None
> CoS queues : 4 supported, 4 in use
> Last flapped : 2010-08-19 18:42:37 GMT (21:24:58 ago)
> Input rate : 0 bps (0 pps)
> Output rate : 0 bps (0 pps)
> DS1 alarms : None
> DS3 alarms : None
> DS1 defects : None
> DS3 defects : None
>
> Logical interface t1-1/1/0:0.0 (Index 214) (SNMP ifIndex 429)
> Flags: Hardware-Down Point-To-Point SNMP-Traps Encapsulation:
> Multilink-FR-UNI-NNI
> Protocol mfr, Multilink bundle: ls-3/0/0:0, MTU: 0
> Flags: None
>
>> show interfaces t1-1/0/0:19
> Physical interface: t1-1/0/0:19, Enabled, Physical link is Up
> Interface index: 501, SNMP ifIndex: 211
> Description: Bendtel Test leg #2
> Link-level type: Multilink-FR-UNI-NNI, MTU: 1518, Clocking: Internal, Speed:
> T1, Loopback: None, FCS: 16, Mode: C/Bit parity,
> Framing: ESF
> Device flags : Present Running
> Interface flags: Point-To-Point SNMP-Traps Internal: 0x4000
> Link flags : None
> CoS queues : 4 supported, 4 in use
> Last flapped : 2010-07-09 18:35:02 GMT (5w6d 21:32 ago)
> Input rate : 0 bps (0 pps)
> Output rate : 24 bps (0 pps)
> DS1 alarms : None
> DS3 alarms : None
> DS1 defects : None
> DS3 defects : None
>
> Logical interface t1-1/0/0:19.0 (Index 91) (SNMP ifIndex 625)
> Flags: Hardware-Down Point-To-Point SNMP-Traps Encapsulation:
> Multilink-FR-UNI-NNI
> Protocol mfr, Multilink bundle: ls-3/0/0:0, MTU: 0
> Flags: None
>
>
> Here is the show chassis
>
> jim at b1-bend-re0> show chassis hardware
> Hardware inventory:
> Item Version Part number Serial number Description
> Chassis 20934 M20
> ...
> FPC 3 REV 01 710-001292 AE7635 FPC
> PIC 0 REV 01 750-007924 HM0123 1x Link Service(32)
> ...
>
>
> For both t1s you can see that they show connected, but for some reason (that
> escapes me) the ls interface shows "Hardware-Down" Does this mean the Link
> services module is not turned up? To me it isn't clear.
>
> Any help would be great!
>
> Thanks
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