Switching

Hi I work for a small ISP and ran into loop problem few weeks ago and like to see how different other engineers would tackle the problem that I faced .I am a firewall engineer and does not have much knowledge on switching and routing.Servers in clien...

Dear all,  Is there a specific design guide when using ASA clustering with Nexus vPC? Basically I have two ASA which will be deployed in a clustering manner. The two ASA will then connect to two Nexus 5K in vPC mode. The security team wants to connec...

Hi all,I am working on a design using a pair of Cisco 4507R+E and two WS-X45-Sup7-E per chassis. I want to setup VSS between the two chassis and have supervisor redundancy per chassis. I plan to create a VSL between the two supervisors and also two 1...

We have this case study in school wherein we are required to build a network for a school. We decided that we are going to use the three layer hierarchical model. I need your insights about choosing between a layer 2 and layer 3 configurations/switch...

Before I begin, let me say that I've scoured both the Cisco forums as well as the internet at large (Google is my friend)... I cannot for the life of me figure out what this process is, or why it is consuming half of the CPU on average on two of our ...

            Hi. i have two SUP 720 in cisco 6500 switch running in IOS mode.  ( Recently upgraded from CAT to OS )show redundancy is showing different Image set in Image Version ( 12.2 - 18 Active ) and ( 12.2- 33 Standby )My question is, do i need t...

Hi All,I need your help to clarify and verify as below scenario questions:1.I couldn't ping one the unix based server,but i can able to ping after server ping my laptop IP address.2.Same laptop able ping all the while another unix based server with s...

HI ,I have a problem with port security. Although i had disabled port security it is still blocking my ports with more than 1 mac adress. When i enable and configure port security to allow 3 mac adresses and violation behaviour to restrict it still d...

Hi,I get this message on my Cisco 6500 VSS.I cannot find what this message is about.This message come every 10-15 minuttes in my log.%EARL_L2_ASIC-SW2_SPSTBY-4-DBUS_HDR_ERR: EARL L2 ASIC #0: Dbus Hdr. Error occurred. Ctrl1 0xB08D0E3DThis is my hardwa...

Hi all,Anybody has seen message like this before?   Can you explani what does it mean     Aug 24 18:15:56 core.schmid.local 753: Aug 24 18:15:55: %FIB-2-FIBDISABLE: Fatal error, slot 41/0 (41): XDR disabledI got it from VSS , running on IOS:s2t54-ipb...

Hi All,I'm facing a strange issue, Data transfer through UDP is very slow wheras data transfer through TCP is very fast for the same source and destination.I have the wireshark output captured from the client and server. Can anybody help me to know h...