[j-nsp] L2 Channel Errors

Aaron aaron1 at gvtc.com
Wed Feb 22 10:47:10 EST 2017


I'm not sure if "cdp disable" will work... you might need "no cdp enable"

Cdp, vtp, dtp, I think are cisco proprietary and you might want those
disabled facing the juniper.  Just a quick search online , I find the
following ... I'm not sure if the following info applies to the 6500 , so
please verify before using

----------------------------------------------------------------------------
----

*** cdp

http://www.cisco.com/c/en/us/td/docs/ios/12_2/configfun/command/reference/ff
un_r/frf015.html 

To enable Cisco Discovery Protocol (CDP) on an interface, use the cdp enable
interface configuration command. To disable CDP on an interface, use the no
form of this command.

cdp enable

no cdp enable 

----------------------------------------------------------------------------
----

*** vtp

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12-2SX/co
nfiguration/guide/book/vtp.html#wp1029449%0A 

 This example shows how to disable VTP mode on a port:

Router# config terminal

Enter configuration commands, one per line.  End with CNTL/Z.

Router(config)# interface gigabitethernet 3/5

Router(config-if)# no vtp

Router(config-if)# end

Router#

----------------------------------------------------------------------------
----

*** dtp


http://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-swit
ches/24330-185.html

switch(config-if)#switchport nonegotiate

!--- Set trunking mode to not send DTP negotiation packets !--- for trunks
to routers.

----------------------------------------------------------------------------
----

*** cisco loop packet --- I'm not sure about this being proprietary, I just
remember seeing this often in wireshark and maybe this could result in some
of the traffic you are seeing on the juniper....

https://supportforums.cisco.com/discussion/10816351/whats-loop-traffic-ether
eal



-Aaron




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