Sniffing the ISIS packets should give some more clues.
Le 19/05/2011 20:37, Kaliraj a écrit :
hi david, 1. is the erx interface configured with an ip-address? http://www.juniper.net/techpubs/software/erx/junose72/swconfig-ip-ipv6-igp/html/isis-config6.html#89040 says erx should have atleast one ip-addres/router-id configured. 2. if yes, then pls try if adjusting hello-padding attributes on both ends. it does look like mtu and padding issue. perhaps try adaptive/strict padding on junos side to see if there are mtu issues. kaliraj On Thu, May 19, 2011 at 10:24 AM,<david....@orange-ftgroup.com> wrote:Hi all, I'm trying to establish an ISIS L2 adjacency between an ERX (Junose is new for me) and 1 MX without success : I double checked the mtu, subnet, Area (not checked for L2), authentication key (I tried simple and MD5 types) The problem seems to be at the ERX side. Indeed, the MX receives well the IIH of the ERX and put its state to Init, then it sends an IIH to the ERX. At the ERX level, IIH is discarded (at the Interface level : Input Discard counter). I don't understand why. I guess there is a MTU issue with the hello padding process but I'm not sure. Config at the MX side --------------------------- ge-2/2/2.0 { family iso; faimly inet address 10.1.1.1/30 } lo0 { family iso address 49.0001.xxx } protocol isis { level 2 { authentication-key sdjskdjskd; authentication-type md5; } interface ge-2/2/2.0 { level 1 disable; level 2 { hello-authetication-key FOO; hello-authetication-type md5; } } Config at the ERX side : router isis 1234 is-type level-2-only net 49.0001.xxx domain-message-digest-key 1 hmac-md5 FOO passive-interface loopback50 int gi 12/0 ip router isis 1234 isis circuit-type level-2-only isis message-digest-key 1 hmac-md5 FOO level-2 I tried to monitor ISIS packet at the MX side. I noticed that the PDU length of the MX IIH is equal to 1492 and the ERX one is equal to 1497. Moreover, the protocol capabilities of the MX are IPv4 and IPv6 and for the ERX that are CLNP and IPv4. Any help would be most welcome. thanks Regards, David ******************************************************************************** IMPORTANT.Les informations contenues dans ce message electronique y compris les fichiers attaches sont strictement confidentielles et peuvent etre protegees par la loi. Ce message electronique est destine exclusivement au(x) destinataire(s) mentionne(s) ci-dessus. Si vous avez recu ce message par erreur ou s il ne vous est pas destine, veuillez immediatement le signaler a l expediteur et effacer ce message et tous les fichiers eventuellement attaches. Toute lecture, exploitation ou transmission des informations contenues dans ce message est interdite. Tout message electronique est susceptible d alteration. A ce titre, le Groupe France Telecom decline toute responsabilite notamment s il a ete altere, deforme ou falsifie. De meme, il appartient au destinataire de s assurer de l absence de tout virus. IMPORTANT.This e-mail message and any attachments are strictly confidential and may be protected by law. This message is intended only for the named recipient(s) above. If you have received this message in error, or are not the named recipient(s), please immediately notify the sender and delete this e-mail message. Any unauthorized view, usage or disclosure ofthis message is prohibited. Since e-mail messages may not be reliable, France Telecom Group shall not be liable for any message if modified, changed or falsified. Additionally the recipient should ensure they are actually virus free. ******************************************************************************** _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp_______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp
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