Switching

why no loop in topology but the trunk port (uplink) have error SPANTREE-2-LOOPGUARD_BLOCK is it safe to remove loop guard config to resolve this network problem which sometimes online and sometimes offline

Hi all,   It is known that normal/basic EIGRP calculation =   (minimum bandwidth + (sum of all delay)) * 256 Let's say there a 2 hops from source A to destination B A --bw1--> [R1] --bw2--> [R2] --bw3--> B q1) why does it only use the minimum bandwid...

We currently have a pair of Catalyst 3750 switch stacks that have been configured to talk to one another through a trunk. This solution works perfectly. Recently we were faced with the need to extend the network at specific locations for specific VLA...

Hello all, I performed on several WS-C2960+24TC-L  a downgrade from 15.0(2)SE6  to 12.2(55)SE9.When the switch reloads all seems to be ok but the flash are not recognized (unknown file system).Neither is possible to configure the switch because it is...

We have a 4500x VSS at the core of our network. Up until this point, we have had one default route out to the Internet for the many vlans/subnets that terminate on the core switch. I've introduced a second gateway and am trying to selectively point v...

Hello,I am doing a review of a network and looking for some clarity on the current switch configuration There are 2 L2 switches – SW1 and SW2 VLANS have been configured as:Network Data – VLAN 555DMZ 1 – VLAN 600DMZ 2 – VLAN 700 The two switches are c...

EDIT: Hello guys,   what a stupid mistake from me! I've forgot that i have applied some basic security configuration, which included command to drop all IP packets with Options field set:   ip options drop Because IGMP Membership Report packets use R...

Hi All,Recently i had attended an interview in which there was a tricky question, PC A -- Sw 1 ---- Sw2 -- PCB Let us suppose if we are not running STP and Sw1  & Sw2 have 2 links connected to each other. Unfortunately PCA pings to the wrong ip and a...

Please help me to cisco software (CAT 3650 LDTE Universal K9 image-S3650ULPEK9-37E) activation.

I am getting the following output when I run a traceroute to a specific IP, all other IPs are ok. 10.255.3.252 is the WAN interface on the router.  I am getting the same result when I run a trace on the Standby router.  Any ideas what might be causin...

Hello Team, Today i got one case regarding the Router reboot. Output pasted below.***************************************************------------------ show version ------------------Cisco IOS Software, c7600s72033_rp Software (c7600s72033_rp-ADVIPSE...