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ERSPAN Header Documentation

Work has begun on the dissection of the new 'header-type 3' ERSPAN Type-III header.  The current release version of Wireshark does not decode this format at all. We currently have the copy of Wireshark in SVN decoding the new header and identifying t...

jasonfmic by • Level 1
  • 5927 Views
  • 2 replies
  • 0 Helpful votes

Sup Engine not powering up

we connected two supengine(WS-X45-SUP6-E)to two 4506-E chasis core switches(primary and secondary).But one sup engine is not powering up.checked again by swapping the sup engine.then the one which was not powered earlier comes up and the one which wa...

anva12345 by • Level 1
  • 1084 Views
  • 5 replies
  • 0 Helpful votes

dual SUP720 with 10G line card

Maybe its by design but just my curiosity since this our first 10G line card...  After insert 10G and put in production, when I ran show mac-add from 10g interface I only see list off mac address from module 9 (slot i had 10g line card insert).  but ...

ARP

Hi,PC and switch use ARP to discover the destionation MAC address. When a packet reaches routers, do routers use ARP to discover the next hop router's MAC address?thx,Jingyi

Resolved! connecting 6509 to a 3550 vlan/switching

I am connecting a 6509(10.x.x.x network) to a 3550(192.168.x.x network).  I enabled ip routing.  What else would I need to do to have the 2 switches communicate with each other, and other end devices  too?Also on the 3550, all the porst besides fa0/1...

ajmadriaga by • Level 1
  • 1005 Views
  • 11 replies
  • 0 Helpful votes

Resolved! BGP "show ip bgp summary" output question

Dear All,My name is Michael, I'm working at SkyVision golobal ip connectivity company.Recently when doing show ip bgp summary i've discovered something new:<neighbor IP>  4        <neighbor as>      10   21914        1    0  599 00:06:19        1 (SE...

VLAN filtering with mac

Hi,I'm trying to filter a mac address on a vlan using VACL/VLAN access map but i can't get it working om my 4510R. None of the traffic from the host seems to be filtered.I want to filter mac 001c.7ec8.e7b2 on vlan 11. Here's the configuration:mac acc...

dennisv99 by • Level 1
  • 701 Views
  • 3 replies
  • 0 Helpful votes

4507-Cisco Network Assistant-No VLAN

I am trying to figure out why I cannot configure VLAN's on the ports of my 4507 through CNA.  I am using CNA 5.5   I was able to a while ago then we put in a new VOIP system and now I do not even see the VLAN option for my 4507.  My other switches in...

Resolved! Traffic Traversing VSL

We just bought some new toys,  2 x 6506 with VSS supsthey are connected by 2 x 10gig linksI keep reading in the documentation that traffic should never traverse the VSL links , because you use etherchannels everywhere,  but what if you have devices w...

2921 router can't ping

I have a 2921 Router and I can ping my entire network from the router but nothing can ping it from either side of the router. I know this is something simple but I can't figure it out.Let me know what stupid thing I missed.Thanks,Dan

ddevecka by • Level 1
  • 1108 Views
  • 6 replies
  • 0 Helpful votes

Resolved! User logon

Hi! i create somes users with level 15 of privilege but i can only access with the admin user using ssh, telnet o http service. When i try using other users i can not access. Thank

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