[j-nsp] ISIS between ERX 1440 and MX960

Payam Chychi pchychi at gmail.com
Fri May 20 11:47:58 EDT 2011


correction:
point-to-point is configured under the interface on the erx

" interface blah/0
isis network point-to-point "


-Payam

Payam Chychi wrote:
> Hey,
>
> Have you tried setting each side up as a. Point-to-point network? Its
> done under protocol isis
>
> Try that and see if it works. If so, ur dst mac on one side is getting
> filtered (by the device itself or perhaps your  provider)
>
>
> On 5/20/11, david.roy at orange-ftgroup.com <david.roy at orange-ftgroup.com> wrote:
>   
>> Hi,
>>
>> I don't know how to go on with the ERX. I tried many things without success.
>> More traces below. Thanks for your help : May be a bug ?!?
>>
>> Regards,
>> David
>>
>>
>> ERX :
>> #######
>>
>> interface loopback 50
>>  ip address x.x.x.x 255.255.255.255
>>  no ip redirects
>> !
>> interface gigabitEthernet 12/0
>>  mtu 4488
>>  ip address y.y.y.1 255.255.255.252
>>  no ip redirects
>>  ip router isis 31337
>>  isis circuit-type level-2-only
>>  isis authentication-key level-2 foo123
>> !
>> router isis 31337
>>  is-type level-2-only
>>  passive-interface loopback50
>>  net 49.0001.xxxx.xxxx.xxxx.00
>>  domain-authentication psnp
>>  domain-authentication csnp
>>  domain-message-digest-key 1 hmac-md5 foo123
>>  metric-style wide
>> !
>>
>>
>> MX :
>> #######
>>
>> ge-2/2/2 {
>>     mtu 4484;
>>     unit 0 {
>>         family inet {
>>             address y.y.y.2/30;
>>         }
>>         family iso;
>>     }
>> }
>>
>> isis {
>>     level 2 {
>>         authentication-key "xxxxxxxx"; ## SECRET-DATA = foo123
>>         authentication-type md5;
>>         wide-metrics-only;
>>     }
>>     interface ge-2/2/2.0 {
>>       level 1 disable;
>>       level 2 {
>>           hello-authentication-key "$9$fQ39yrv8xdBIs4aJDjCtpBhS"; ##
>> SECRET-DATA = foo123
>>           hello-authentication-type simple;
>>       }
>>    }
>> }
>>
>>
>> Trace on MX :
>> ##############
>>
>> show interfaces ge-2/2/2
>> Physical interface: ge-2/2/2, Enabled, Physical link is Up
>>   Interface index: 251, SNMP ifIndex: 556
>>   Description: Connection To LNS
>>   Link-level type: Ethernet, MTU: 4484, Speed: 1000mbps, BPDU Error: None,
>> MAC-REWRITE Error: None, Loopback: Disabled,
>>   Source filtering: Disabled, Flow control: Enabled, Auto-negotiation:
>> Enabled, Remote fault: Online
>>   Device flags   : Present Running
>>   Interface flags: SNMP-Traps Internal: 0x4000
>>   Link flags     : None
>>   CoS queues     : 8 supported, 8 maximum usable queues
>>   Schedulers     : 0
>>   Current address: 84:18:88:e8:c9:9e, Hardware address: 84:18:88:e8:c9:9e
>>   Last flapped   : 2011-05-20 11:54:46 EEST (01:08:11 ago)
>>   Input rate     : 6144 bps (8 pps)
>>   Output rate    : 0 bps (0 pps)
>>   Active alarms  : None
>>   Active defects : None
>>
>>   Logical interface ge-2/2/2.0 (Index 75) (SNMP ifIndex 656)
>>     Flags: SNMP-Traps 0x4000000 Encapsulation: ENET2
>>     Input packets : 27981
>>     Output packets: 600
>>     Protocol inet, MTU: 4470
>>       Flags: Sendbcast-pkt-to-re
>>       Addresses, Flags: Is-Preferred Is-Primary
>>         Destination: x.x.x.x/30, Local: x.x.x.x, Broadcast: x.x.x.x
>>     Protocol iso, MTU: 4467
>> <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<ISO MTU
>>     Protocol multiservice, MTU: Unlimited
>>
>>
>> monitor traffic interface ge-2/2/2.0 layer2-headers no-resolve size 4488
>> verbose output suppressed, use <detail> or <extensive> for full protocol
>> decode
>> Address resolution is OFF.
>> Listening on ge-2/2/2.0, capture size 4488 bytes
>>
>> TO ERX :
>>
>> 13:04:34.156857 Out 84:18:88:e8:c9:9e > 1:80:c2:0:0:15, 802.3, length 1509:
>> LLC, dsap OSI (0xfe) Individual, ssap OSI (0xfe) Command, ctrl 0x03: OSI
>> NLPID IS-IS (0x83): L2 Lan IIH, src-id 2131.3905.5002, lan-id
>> 2131.3905.5002.00, prio 64, length 1492  <<< PDU length including hello
>> padding of the MX
>>
>> FROM ERX :
>>
>> 13:04:35.450255  In 0:90:1a:41:fa:f5 > 1:80:c2:0:0:15, 802.3, length 1514:
>> LLC, dsap OSI (0xfe) Individual, ssap OSI (0xfe) Command, ctrl 0x03: OSI
>> NLPID IS-IS (0x83): L2 Lan IIH, src-id 1921.6801.6029, lan-id
>> 1921.6801.6029.01, prio 64, length 1497  <<< PDU length including hello
>> padding of the ERX
>>
>>
>>
>> Trace on ERX :
>> ##############
>>
>>
>>
>> sho int gi 12/0
>> GigabitEthernet12/0 is Up, Administrative status is Up
>>   Hardware is PMC 3386, address is 0090.1a41.faf5
>>   Primary MAU is 1000BASE-LX 10km, secondary MAU is 1000BASE-LX 10km
>>   MTU: Operational 4488, Administrative 4488
>> <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< MTU seems good
>>   Duplex Mode: Operational Full Duplex, Administrative Auto Negotiate
>>   Speed: Operational 1000 Mbps, Administrative Auto Negotiate
>>   Debounce: State is Disabled
>>   Link: Operational Primary Link Selected,
>>         Administrative Link Selected Automatically
>>   Link Failover Timeout: Operational 727 ms, Administrative default
>>   Primary link selected 258 times, Secondary link selected 252 times
>>   Primary link signal detected, Secondary link signal not detected
>>
>>   No baseline has been set
>>   5 minute input rate 1024 bits/sec, 0 packets/sec
>>   5 minute output rate 19456 bits/sec, 12 packets/sec
>>
>>   In: Bytes 789821048435, Unicast 4769999720
>>    Multicast 2224876, Broadcast 2088
>>    Errors 0, Discards 36549, Mac Errors 0, Alignment 0  <<<<<<<<<<<<<<<<<
>> IIH coming from MX are discarded
>>    CRC 0, Too Longs 0, Symbol Errors 0
>>   Out: Bytes 6824490336601, Unicast 6292729944
>>    Multicast 4577411, Broadcast 103
>>    Errors 0, Discards 0, Mac Errors 0, Deferred 0, No Carrier 0
>>    Collisions: Single 0, Multiple 0, Late 0, Excessive 0
>> Policed Statistics:
>>   In: 0, Out: 0
>> ARP Statistics:
>>   In: ARP requests 211, ARP responses 8
>>    Errors 0, Discards 6
>>   Out: ARP requests 103, ARP responses 204
>>    Errors 0, Discards 7
>>
>> Administrative qos-shaping-mode: none
>> Operational qos-shaping-mode: frame
>> queue 0: traffic class best-effort, bound to ethernet GigabitEthernet12/0
>>   Queue length 0 bytes
>>   Forwarded packets 0, bytes 0
>>   Dropped committed packets 0, bytes 0
>>   Dropped conformed packets 0, bytes 0
>>   Dropped exceeded packets 0, bytes 0
>> queue 1: traffic class control, bound to GigabitEthernet12/0
>>   Queue length 0 bytes
>>   Forwarded packets 22347807, bytes 1630937549
>>   Dropped committed packets 0, bytes 0
>>   Dropped conformed packets 0, bytes 0
>>   Dropped exceeded packets 0, bytes 0
>>
>>
>>
>> sho clns interface gi 12/0
>> GigabitEthernet12/0 is up, line protocol is up
>>   Checksums Enabled, MTU 4470, Encapsulation SNAP  <<<<<<<<<< MTU ISO
>>   Next ESH/ISH is 7 seconds
>>   Routing Protocol: IS-IS
>>     Circuit Type: level-2
>>     Interface number 0x495886, local circuit ID 0x1
>>     Level-1 Metric: 10, DIS Priority: 0, Priority: 64,
>>             Circuit ID: BRAS3-WDOO.01
>>             L1 Designated IS: Disabled
>>     Number of active level-1 adjacencies: 0
>>     Level-2 Metric: 10, DIS Priority: 64, Priority: 64,
>>             Circuit ID: BRAS3-WDOO.01
>>
>>             L2 Designated IS: BRAS3-WDOO:default.01 (not us)
>>     Number of active level-2 adjacencies: 0
>>     Next IS-IS LAN Level-1 Hello in 0 seconds
>>     Next IS-IS LAN Level-2 Hello in 6 seconds
>>     BFD disabled
>>     Mesh Group Inactive
>>     Authentication Level-2:
>>       Key-id:   0 Type: password*
>>         Start Accept:   THU MAY 19 18:08:31 2011
>>         Start Generate: THU MAY 19 18:08:31 2011
>>         Stop Accept:    0
>>         Stop Generate:  0
>>
>>
>> sho clns traffic detail
>> IS-IS: Baseline last set 28 days, 22 hours, 11 minutes, 17 seconds
>> IS-IS: Corrupted LSPs: 0
>> IS-IS: L1 LSP Database Overloads: 0
>> IS-IS: L2 LSP Database Overloads: 0
>> IS-IS: Area Addresses Dropped: 0
>> IS-IS: Attempts to Exceed Max Sequence: 0
>> IS-IS: Sequence Numbers Skipped: 0
>> IS-IS: Total LSPs Purged: 414
>> IS-IS: Own LSPs Purged: 0
>> IS-IS: System ID Length Mismatches: 0
>> IS-IS: Maximum Area Mismatches: 0
>> IS-IS: Area/Domain Authentication Failures: 0
>> IS-IS: Level-1 LSPs Sent: 0 Rcvd: 0 Dropped: 0
>> IS-IS: Level-2 LSPs Sent: 3086 Rcvd: 529403 Dropped: 0
>> IS-IS: LSP checksum errors received: 0
>>
>> Interface: GigabitEthernet12/0
>> IS-IS: Baseline last set 28 days, 22 hours, 11 minutes, 17 seconds
>> IS-IS: Protocol PDUs (in/out): 0/0
>> IS-IS: Init Failures: 0
>> IS-IS: Adjacencies Changes: 0
>> IS-IS: Adjacencies Rejected: 0
>> IS-IS: Bad LSPs: 0
>> IS-IS: Level-1 Designated IS Changes: 2
>> IS-IS: Level-2 Designated IS Changes: 11
>> IS-IS: Invalid 9542s: 0
>> IS-IS: Malformed PDU reecived: 0
>> IS-IS: Authentication Failures: 0
>> IS-IS: Level-1 Hellos (in/out/dropped): 0/0/0
>> IS-IS: Level-2 Hellos (in/out/dropped): 0/300/0   <<<<<<<<<<<<< ONLY SENT
>> IIH
>> IS-IS: Level-1 CSNPs (in/out): 0/0
>> IS-IS: Level-2 CSNPs (in/out): 0/0
>> IS-IS: Level-1 PSNPs (in/out): 0/0
>> IS-IS: Level-2 PSNPs (in/out): 0/0
>> IS-IS: LSPs Retransmitted : 0
>>
>>
>>
>> David Roy
>> Orange - IP Domestic Backbone - TAC
>> Tel.   +33(0)299876472
>> Mob. +33(0)685522213
>> Email. david.roy at orange-ftgroup.com
>> JNCIE-M/T  #703 ; JNCIS-ENT
>>
>> -----Message d'origine-----
>> De : sthaug at nethelp.no [mailto:sthaug at nethelp.no]
>> Envoyé : jeudi 19 mai 2011 21:35
>> À : ROY David DTF/DERX
>> Cc : kalirajv at gmail.com; juniper-nsp at puck.nether.net
>> Objet : Re: [j-nsp] ISIS between ERX 1440 and MX960
>>
>>     
>>> 2. I tried but without success. I believe that the ISO MTU is less
>>> than the padded hello of the MX. I will try to set mtu of the gi 12/0
>>> of the ERX to 1518 : I will update you if it works
>>>       
>> We have IS-IS running between MX and ERX with no problem. Use 4 byte more
>> for the ERX MTU than the MX MTU on the physical interfaces, and you should
>> be all set.
>>
>> Example of working config below, lightly anonymized.
>>
>> Steinar Haug, Nethelp consulting, sthaug at nethelp.no
>> ----------------------------------------------------------------------
>>
>> interface gigabitEthernet 2/0
>>  mtu 4488
>>  ip address a.b.2.202 255.255.255.252
>>  ip router isis
>>  isis network point-to-point
>>  isis circuit-type level-2-only
>>
>> interface loopback 0
>>  ip address a.b.0.75 255.255.255.255
>>  ip router isis
>>  isis circuit-type level-2-only
>>
>> router isis
>>  is-type level-2-only
>>  net 47.0001.0000.0000.0075.00
>>  metric-style wide level-2
>>
>> interfaces {
>>     ge-0/0/3 {
>>         mtu 4484;
>>         unit 0 {
>>             family inet {
>>                 address a.b.2.201/30;
>>             }
>>             family iso;
>>         }
>>     }
>>     lo0 {
>>         unit 0 {
>>             family inet {
>>                 address a.b.0.78/32;
>>             }
>>             family iso {
>>                 address 47.0001.0000.0000.0078.00;
>>             }
>>         }
>>     }
>> }
>>
>> protocols {
>>     isis {
>>         level 2 wide-metrics-only;
>>         level 1 disable;
>>         interface ge-0/0/3.0 {
>>             point-to-point;
>>         }
>>         interface lo0.0 {
>>             level 2 passive;
>>         }
>>     }
>> }
>>
>>
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>
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