MLPPP Problems between J-Series and Cisco

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MLPPP Problems between J-Series and Cisco

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1. MLPPP Problems between J-Series and Cisco

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Erdem
Posted 05-13-2009 20:33

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We are trying to bring up two t-1 via multlink on a J6350 to ATT Cisco Router.

Using the same config to Qwest I have our ISP links up.

I spent a week with ATT and JTAC, getting no where fast.

All the wiring been double verifed and we loop to the carrier and loop to the router and no errors.

The Physical T-1 show admin and oper up. But LS-0/0/0.1 shows down.

Is their any tweaks I can do the config ,, ATT also sent me a sample of their config.... Help !!

I'm open to any suggestion at this point ...

interfaces {
    ge-0/0/0 {
        vlan-tagging;
        unit 1 {
            vlan-id 101;
            family inet {
                address 192.146.127.4/29;
            }
        }
    }
    ls-0/0/0 {
        unit 0 {
            description ATT_3Mbps_PVTCkt_;
            encapsulation multilink-ppp;
            family inet {
                address 10.103.63.2/30;
            }
        }
        unit 1 {
            description ATT_3Mbps_Internet;
            encapsulation multilink-ppp;
            family inet {
                address vvvvvvvvvvvv;
            }
        }
    }
    ge-0/0/1 {
        unit 0 {
            family inet {
                address 192.168.50.11/24;
            }
        }
    }
    t1-1/0/0 {
        description ATT_PVT_T1_;
        clocking internal;
        encapsulation ppp;
        unit 0 {
            family mlppp {
                bundle ls-0/0/0.0;
            }
        }
    }
    t1-1/0/1 {
        description ATT_Internet;
        clocking internal;
        encapsulation ppp;
        unit 0 {
            family mlppp {
                bundle ls-0/0/0.1;
            }
        }
    }
    t1-2/0/0 {
        description ATT_PVT_T1_;
        clocking internal;
        encapsulation ppp;
        unit 0 {
            family mlppp {
                bundle ls-0/0/0.0;
            }
        }
    }
    t1-2/0/1 {
        description ATT_Internet;
        clocking internal;
        encapsulation ppp;
        unit 0 {
            family mlppp {
                bundle ls-0/0/0.1;

show interface:

Logical interface ls-0/0/0.0 (Index 71) (SNMP ifIndex 140)
    Description: ATT_3Mbps_PVTCkt_
    Flags: Point-To-Point SNMP-Traps 0x4000 Encapsulation: Multilink-PPP
    Last flapped: 2009-05-13 16:09:23 MDT (00:59:58 ago)
    Bandwidth: 3072kbps
    Bundle links information:
      Active bundle links       2
      Removed bundle links      0
      Disabled bundle links     0
    Statistics         Frames        fps         Bytes          bps
    Bundle:
      Multilink:
        Input :          9420          0       1336881          464
        Output:          5790          0       3686814          288
      Network:
        Input :          9422          0       1271045            0
        Output:          5790          0       3654762            0
    Link:
      t1-1/0/0.0
        Up time: 00:59:58
        Input :          4716          0        664308          232
        Output:          2897          0       1839424            0
      t1-2/0/0.0
        Up time: 00:59:51
        Input :          4704          0        672573          232
        Output:          2893          0       1847390          288
NCP state: inet: Opened, inet6: Not-configured, iso: Not-configured, mpls: Not-configured
    Security: Zone: ATT_pvtckt_
    Allowed host-inbound traffic : bfd ospf ping traceroute
    Protocol inet, MTU: 1500
      Flags: None
      Addresses, Flags: Is-Preferred Is-Primary
        Destination: 10.103.63.0/30, Local: 10.103.63.2

Logical interface ls-0/0/0.1 (Index 72) (SNMP ifIndex 143)
    Description: ATT_3Mbps_Internet
    Flags: Hardware-Down Point-To-Point SNMP-Traps 0x4000 Encapsulation: Multilink-PPP
    Last flapped: 2009-05-13 16:24:00 MDT (00:45:21 ago)
    Bandwidth: 0
    Bundle links information:
      Active bundle links       0
      Removed bundle links      0
      Disabled bundle links     0
    Statistics         Frames        fps         Bytes          bps
    Bundle:
      Multilink:
        Input :             0          0             0            0
        Output:             0          0             0            0
      Network:
        Input :             0          0             0            0
        Output:             0          0             0            0
NCP state: inet: Not-configured, inet6: Not-configured, iso: Not-configured, mpls: Not-configured
    Security: Zone: Null
    Protocol inet, MTU: 1500
      Flags: Protocol-Down
      Addresses, Flags: Dest-route-down Is-Preferred Is-Primary
        Dest

Physical interface: t1-1/0/0, Enabled, Physical link is Up
Interface index: 142, SNMP ifIndex: 131
Description: ATT_PVT_T1
Link-level type: Multilink-PPP, MTU: 1510, Clocking: Internal, Speed: T1, Loopback: None, FCS: 16, Framing: ESF
Device flags   : Present Running
Interface flags: Point-To-Point SNMP-Traps Internal: 0x4000
Link flags     : None
Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3
Keepalive: Input: 353 (00:00:08 ago), Output: 355 (00:00:05 ago)
LCP state: Opened
CHAP state: Closed
PAP state: Closed
CoS queues     : 8 supported, 8 maximum usable queues
Last flapped   : 2009-05-13 16:09:23 MDT (00:58:52 ago)
Input rate     : 232 bps (0 pps)
Output rate    : 0 bps (0 pps)
DS1   alarms   : None
DS1   defects : None

Logical interface t1-1/0/0.0 (Index 74) (SNMP ifIndex 138)
    Flags: Point-To-Point SNMP-Traps 0x4000 Encapsulation: PPP
    Security: Zone: Null
    Protocol mlppp, Multilink bundle: ls-0/0/0.0, MTU: 1506

Physical interface: t1-1/0/1, Enabled, Physical link is Up
Interface index: 143, SNMP ifIndex: 132
Description: ATT_Internet
Link-level type: Multilink-PPP, MTU: 1510, Clocking: Internal, Speed: T1, Loopback: None, FCS: 16, Framing: ESF
Device flags   : Present Running
Interface flags: Link-Layer-Down Point-To-Point SNMP-Traps Internal: 0x4000
Link flags     : None
Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3
Keepalive: Input: 0 (never), Output: 10 (00:04:24 ago)
LCP state: Down
CHAP state: Closed
PAP state: Closed
CoS queues     : 8 supported, 8 maximum usable queues
Last flapped   : 2009-05-13 17:08:07 MDT (00:00:08 ago)
Input rate     : 0 bps (0 pps)
Output rate    : 0 bps (0 pps)
DS1   alarms   : None
DS1   defects : None

Logical interface t1-1/0/1.0 (Index 75) (SNMP ifIndex 144)
    Flags: Hardware-Down Device-Down Point-To-Point SNMP-Traps 0x4000 Encapsulation: PPP
    Security: Zone: Null
    Protocol mlppp, Multilink bundle: ls-0/0/0.1, MTU: 1506

Physical interface: t1-2/0/0, Enabled, Physical link is Up
Interface index: 144, SNMP ifIndex: 136
Description: ATT_PVT_T1_SanJose_CA
Link-level type: Multilink-PPP, MTU: 1510, Clocking: Internal, Speed: T1, Loopback: None, FCS: 16, Framing: ESF
Device flags   : Present Running
Interface flags: Point-To-Point SNMP-Traps Internal: 0x4000
Link flags     : None
Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3
Keepalive: Input: 354 (00:00:02 ago), Output: 351 (00:00:08 ago)
LCP state: Opened
CHAP state: Closed
PAP state: Closed
CoS queues     : 8 supported, 8 maximum usable queues
Last flapped   : 2009-05-13 16:09:25 MDT (00:58:50 ago)
Input rate     : 280 bps (0 pps)
Output rate    : 0 bps (0 pps)
DS1   alarms   : None
DS1   defects : None

Logical interface t1-2/0/0.0 (Index 76) (SNMP ifIndex 139)
    Flags: Point-To-Point SNMP-Traps 0x4000 Encapsulation: PPP
    Security: Zone: Null
    Protocol mlppp, Multilink bundle: ls-0/0/0.0, MTU: 1506

Physical interface: t1-2/0/1, Enabled, Physical link is Up
Interface index: 145, SNMP ifIndex: 137
Description: ATT_Internet
Link-level type: Multilink-PPP, MTU: 1510, Clocking: Internal, Speed: T1, Loopback: None, FCS: 16, Framing: ESF
Device flags   : Present Running
Interface flags: Link-Layer-Down Point-To-Point SNMP-Traps Internal: 0x4000
Link flags     : None
Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3
Keepalive: Input: 0 (never), Output: 10 (00:39:33 ago)
LCP state: Down
CHAP state: Closed
PAP state: Closed
CoS queues     : 8 supported, 8 maximum usable queues
Last flapped   : 2009-05-13 17:08:14 MDT (00:00:01 ago)
Input rate     : 0 bps (0 pps)
Output rate    : 232 bps (1 pps)
DS1   alarms   : None
DS1   defects : None

Logical interface t1-2/0/1.0 (Index 77) (SNMP ifIndex 145)
    Flags: Hardware-Down Device-Down Point-To-Point SNMP-Traps 0x4000 Encapsulation: PPP
    Security: Zone: Null
    Protocol mlppp, Multilink bundle: ls-0/0/0.1, MTU: 1506

Cisco Sample Config...

service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname MISCOS01
!
enable secret l1nguin
!
ip subnet-zero
no ip domain-lookup
ip cef
!
interface Multilink1
ip address 12.89.77.146 255.255.255.252
no keepalive
no cdp enable
ppp multilink
ppp multilink fragment disable
ppp multilink group 1
!
interface FastEthernet0/0
description connection to customer LAN
ip address 12.232.17.193 255.255.255.240
no ip redirects
no ip unreachables
no ip proxy-arp
no ip mroute-cache
speed auto
duplex auto
no cdp enable
no shut
!
interface fastEthernet0/1
no description
no ip address
shutdown
!
interface Serial0/0/0
no ip address
max-reserved-bandwidth 100
encapsulation ppp
no cdp enable
ppp multilink
ppp multilink group 1
!
interface Serial0/1/0
no ip address
max-reserved-bandwidth 100
encapsulation ppp
no cdp enable
ppp multilink
ppp multilink group 1
!
interface Serial0/2/0
no ip address
max-reserved-bandwidth 100
encapsulation ppp
no cdp enable
ppp multilink
ppp multilink group 1
!
ip classless
ip route 0.0.0.0 0.0.0.0 Multilink1
no ip http server
!
2. RE: MLPPP Problems between J-Series and Cisco

0 Recommend
Erdem
Posted 05-13-2009 20:53

Reply Reply Privately
LCP is in down state. Try setting no-keepalives on your link (Cisco has this set this way based on the configs). If still no luck, then try running 'monitor traffic interface t1-1/0/1 extensive' (can also run on t1-2/0/1 as well). That should show the LCP negotiation between the Juniper and the upstream device. Note that keepalives lost could cause logical interface to be down especially if only one side has keepalives enabled (Juniper has keepalives enabled by default).

-Richard
3. RE: MLPPP Problems between J-Series and Cisco
Best Answer

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Loup2
Posted 05-14-2009 05:22

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Hi Bowling

You say that there is another multilink PPP bundle working with you ISP and it's working.
Do you have exactly the same configuration there.

I can see in the traces provided that you are running an Enanced service immage with some allowed traffic on the interface:

Logical interface ls-0/0/0.0 ...
...
    Security: Zone: ATT_pvtckt_
    Allowed host-inbound traffic : bfd ospf ping traceroute

and I can see that it's not the same config on the other one.

   Logical interface ls-0/0/0.1 ...
...
    Security: Zone: Null

Please have a look at or provide us your config under security!

Hope This will Help You
4. RE: MLPPP Problems between J-Series and Cisco

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Erdem
Posted 05-14-2009 06:46

Reply Reply Privately
Good catch on the security zone. I pulled that yesterday during loopback testing and forgot to re-ad.

I'm going to try the keepalive and see if that does it.

Logical interface ls-0/0/0.1 (Index 72) (SNMP ifIndex 143)
    Description: ATT_3Mbps_Internet
    Flags: Hardware-Down Point-To-Point SNMP-Traps 0x4000 Encapsulation: Multilink-PPP
    Last flapped: 2009-05-13 16:24:00 MDT (15:19:32 ago)
    Bandwidth: 0
    Bundle links information:
      Active bundle links       0
      Removed bundle links      0
      Disabled bundle links     0
    Statistics         Frames        fps         Bytes          bps
    Bundle:
      Multilink:
        Input :             0          0             0            0
        Output:             0          0             0            0
      Network:
        Input :             0          0             0            0
        Output:             0          0             0            0
NCP state: inet: Not-configured, inet6: Not-configured, iso: Not-configured, mpls: Not-configured
    Security: Zone: ATT_Internet
    Allowed host-inbound traffic : bgp ping
    Protocol inet, MTU: 1500
      Flags: Protocol-Down
      Addresses, Flags: Dest-route-down Is-Preferred Is-Primary
5. RE: MLPPP Problems between J-Series and Cisco

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Erdem
Posted 05-14-2009 07:38

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I treid the no-keepalives and saw one ckt come up. But then drop.
Then I asked ATT their setting and they said they have to run keepalives and refused to change the config.

ATT is about 35 min from losing our buisness.

Thanks for the great tips.....

Routing

MLPPP Problems between J-Series and Cisco

Erdem05-13-2009 20:33

Erdem05-13-2009 20:53

Loup205-14-2009 05:22Best Answer

Erdem05-14-2009 06:46

Erdem05-14-2009 07:38

1. MLPPP Problems between J-Series and Cisco

2. RE: MLPPP Problems between J-Series and Cisco

3. RE: MLPPP Problems between J-Series and Cisco Best Answer

4. RE: MLPPP Problems between J-Series and Cisco

5. RE: MLPPP Problems between J-Series and Cisco

3. RE: MLPPP Problems between J-Series and Cisco
Best Answer