[j-nsp] Ugh, another ISIS problem

Tony Li tony.li at tony.li
Wed Jun 23 16:18:28 EDT 2010


The MRV is treating the adjacency like it's a P2P link and you're thereby not getting a bidirectional adjacency.  Perhaps the MRV is being 'smart' about having a /30 on the link.

Tony


On Jun 23, 2010, at 11:08 AM, Eric Van Tol wrote:

> Hi all,
> I am in my lab trying to test out ISIS between a J2320 running 9.5R2.7 and an MRV Optiswitch 9000 and I'm having an incredibly difficult time getting routes to show up in either device.  The config is so simple, I'm confused as to why it's not working and thinking there's a bug.  The *only* time I was able to get the loopbacks to show up in the devices' respective route tables was when I configured traceoptions for ISIS policy on the 2320 (?!).  After I bounced the adjacency, it never worked again.  The prefixes are in the databases on both devices.  The other odd thing I noticed is that if I configure 'level 2 hello-interval 5' on the 2320, the output of 'show isis interface extensive' on that router shows the hello-interval to be 1.66 seconds and the hold timer to be 5 seconds (another wtf?!).  Configs of both devices are below, as well as output of 'show isis database detail'.
> 
> Thoughts?
> evt
> 
> interfaces {
>    ge-0/0/0 {
>        unit 0 {
>            family inet {
>                mtu 1500;
>                address 192.168.1.1/30;
>            }
>            family iso {
>                mtu 1497;
>            }
>        }
>    }
>    lo0 {
>        unit 0 {
>            family inet {
>                address 10.0.0.1/32;
>            }       
>            family iso {
>                address 49.0001.1000.0000.0001.00;
>            }
>        }
>    }
> } 
> protocols {
>    isis {
>        traceoptions {
>            file isis.log size 1m files 2;
>            flag error detail;
>            flag lsp detail;
>            flag lsp-generation detail;
>            flag route detail;
>            flag policy detail;
>        }
>        level 1 disable;
>        level 2 wide-metrics-only;
>        } 
>        no-ipv6-routing;
>        interface ge-0/0/0.0 {
>            level 1 disable;
>        }
>        interface lo0.0 {
>            level 1 disable;
>        }
>    }
> }
> 
> MRV:
> interface vlan vif1
> tag 1
> ip 192.168.1.2/30 
> ports 24
> ip router isis
> isis circuit-type level-2-only
> isis hello-interval 3
> !
> interface dummy dummy1
> ip 10.0.0.2/32 
> ip router isis
> isis circuit-type level-2-only
> !
> router isis
> is-type level-2-only
> metric-style wide level-2
> passive-interface dummy1
> net 49.0001.1000.0000.0002.00
> 
> -------------
> admin at j2320-lab# run show isis database extensive 
> IS-IS level 1 link-state database:
> 
> IS-IS level 2 link-state database:
> 
> j2320-lab.00-00 Sequence: 0x7f, Checksum: 0x4909, Lifetime: 1145 secs
>   IPV4 Unicast IS neighbor: j2320-lab.02     Metric:       10
>     Two-way fragment: j2320-lab.02-00, Two-way first fragment: j2320-lab.02-00
>   IP IPV4 Unicast prefix: 10.0.0.1/32        Metric:        0 Internal Up
>   IP IPV4 Unicast prefix: 192.168.1.0/30     Metric:       10 Internal Up
> 
>  Header: LSP ID: j2320-lab.00-00, Length: 154 bytes
>    Allocated length: 1492 bytes, Router ID: 10.0.0.1
>    Remaining lifetime: 1145 secs, Level: 2, Interface: 0
>    Estimated free bytes: 1288, Actual free bytes: 1338
>    Aging timer expires in: 1145 secs
>    Protocols: IP
> 
>  Packet: LSP ID: j2320-lab.00-00, Length: 154 bytes, Lifetime : 1198 secs
>    Checksum: 0x4909, Sequence: 0x7f, Attributes: 0x3 <L1 L2>
>    NLPID: 0x83, Fixed length: 27 bytes, Version: 1, Sysid length: 0 bytes
>    Packet type: 20, Packet version: 1, Max area: 0
> 
>  TLVs:
>    Area address: 49.0001 (3)
>    Speaks: IP
>    Topology: unicast
>    Topology: ipv6 unicast
>    IP router id: 10.0.0.1
>    IP address: 10.0.0.1
>    Hostname: j2320-lab
>    IS neighbor: j2320-lab.02, Internal, Metric: default 10
>    IS extended neighbor: j2320-lab.02, Metric: default 10
>      IP address: 192.168.1.1
>      Local interface index: 69, Remote interface index: 0
>    IP prefix: 192.168.1.0/30, Internal, Metric: default 10, Up
>    IP prefix: 10.0.0.1/32, Internal, Metric: default 0, Up
>    IP extended prefix: 192.168.1.0/30 metric 10 up
>    IP extended prefix: 10.0.0.1/32 metric 0 up
>  No queued transmissions
> 
> j2320-lab.02-00 Sequence: 0x7d, Checksum: 0xb12c, Lifetime: 1145 secs
>   IPV4 Unicast IS neighbor: j2320-lab.00     Metric:        0
>     Two-way fragment: j2320-lab.00-00, Two-way first fragment: j2320-lab.00-00
>   IPV4 Unicast IS neighbor: 1000.0000.0002.00 Metric:        0
>      Two-way first fragment: j2320-lab.00-00
> 
>  Header: LSP ID: j2320-lab.02-00, Length: 76 bytes
>    Allocated length: 1492 bytes, Router ID: 0.0.0.0
>    Remaining lifetime: 1145 secs, Level: 2, Interface: 0
>    Estimated free bytes: 1349, Actual free bytes: 1416
>    Aging timer expires in: 1145 secs
> 
>  Packet: LSP ID: j2320-lab.02-00, Length: 76 bytes, Lifetime : 1198 secs
>    Checksum: 0xb12c, Sequence: 0x7d, Attributes: 0x3 <L1 L2>
>    NLPID: 0x83, Fixed length: 27 bytes, Version: 1, Sysid length: 0 bytes
>    Packet type: 20, Packet version: 1, Max area: 0
> 
>  TLVs:
>    IS neighbor: j2320-lab.00, Internal, Metric: default 0
>    IS neighbor: 1000.0000.0002.00, Internal, Metric: default 0
>    IS extended neighbor: j2320-lab.00, Metric: default 0
>    IS extended neighbor: 1000.0000.0002.00, Metric: default 0
>  No queued transmissions
> 
> 1000.0000.0002.00-00 Sequence: 0x66, Checksum: 0x6847, Lifetime: 1046 secs
>   IPV4 Unicast IS neighbor: j2320-lab.00     Metric:       10
>   IP IPV4 Unicast prefix: 10.0.0.2/32        Metric:       10 Internal Up
>   IP IPV4 Unicast prefix: 192.168.1.0/30     Metric:       10 Internal Up
> 
>  Header: LSP ID: 1000.0000.0002.00-00, Length: 75 bytes
>    Allocated length: 284 bytes, Router ID: 0.0.0.0
>    Remaining lifetime: 1046 secs, Level: 2, Interface: 69
>    Estimated free bytes: 209, Actual free bytes: 209
>    Aging timer expires in: 1046 secs
>    Protocols: IP
> 
>  Packet: LSP ID: 1000.0000.0002.00-00, Length: 75 bytes, Lifetime : 1093 secs
>    Checksum: 0x6847, Sequence: 0x66, Attributes: 0x3 <L1 L2>
>    NLPID: 0x83, Fixed length: 27 bytes, Version: 1, Sysid length: 0 bytes
>    Packet type: 20, Packet version: 1, Max area: 0
> 
>  TLVs:
>    Area address: 49.0001 (3)
>    Speaks: IP
>    IP address: 10.0.0.2
>    IS extended neighbor: j2320-lab.00, Metric: default 10
>    IP extended prefix: 192.168.1.0/30 metric 10 up
>    IP extended prefix: 10.0.0.2/32 metric 10 up
>  No queued transmissions
> 
> ----------
> OS9024C-lab# sh isis data ver
> Area (null):
> IS-IS Level-2 Link State Database:
> LSPID                 LSP Seq Num  LSP Checksum  LSP Holdtime      ATT/P/OL
> 1000.0000.0001.00-00  0x0000007F   0x4909        1017              0/0/0
>  Area Address: 49.0001
>  NLPID:        0xCC
>  Router ID:    10.0.0.1
>  IP Address:   10.0.0.1
>  Hostname:     j2320-lab
>  Metric:   10         IS 1000.0000.0001.02
>  Metric:   10         IS-Extended 1000.0000.0001.02
>    IPv4 Interface Address: 192.168.1.1
>    Unknown Sub-TLV type 4 length 8
>  Metric:   10         IP 192.168.1.0 255.255.255.252
>  Metric:   0          IP 10.0.0.1 255.255.255.255
>  Metric:   10         IP-Extended 192.168.1.0/30
>  Metric:   0          IP-Extended 10.0.0.1/32
> 1000.0000.0001.02-00  0x0000007D   0xB12C        1017              0/0/0
>  Metric:   0          IS 1000.0000.0001.00
>  Metric:   0          IS 1000.0000.0002.00
>  Metric:   0          IS-Extended 1000.0000.0001.00
>  Metric:   0          IS-Extended 1000.0000.0002.00
> 1000.0000.0002.00-00* 0x00000066   0x6847        921               0/0/0
>  Area Address: 49.0001
>  NLPID:        0xCC
>  IP Address:   10.0.0.2
>  Metric:   10         IS-Extended 1000.0000.0001.00
>  Metric:   10         IP-Extended 192.168.1.0/30
>  Metric:   10         IP-Extended 10.0.0.2/32
> 
> Thanks,
> evt
> 
> _______________________________________________
> juniper-nsp mailing list juniper-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/juniper-nsp




More information about the juniper-nsp mailing list