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Ok, I am working in my lab and I was adding a new L2/3 vlanvlan 555name testint vlan 555ip address shutSimple, right?I have also ensured that this vlan is added to the port channel going to my Nexus5K's.  I added the vlan to the 5K's and...

Hello,I have production stack in the following config:Switch   Ports  Model              SW Version              SW Image------   -----  -----              ----------              ----------*    1   52     WS-C3750-48P       12.2(25)SEE4            C...

forman102 by Level 1
  • 3 replies
  • 0 Helpful votes

Hi,Curious if spanning tree topology change can cause this problem. Please see graphics (2nd graphic shows vlans being forward on each switch). Core is 3750X stack and others are 3560s (no ip routing on those)Users attached to switch E1 (and/or E2, n...

lcaruso by Level 6
  • 26 replies
  • 0 Helpful votes

Hello,I been looking for this error for a while but as far as i been reading, all i know is that could be a hardweare or sofwear issue. Is this true? Or what does this means?System returned to ROM by bus error at PC 0x23C365CC, address 0xB0D0AF9 at 1...

Hello,I'm new to the forums I'm using Cisco Packet Tracer and I have two networks. and networks...I have a routers with two fast ethernet ports each connected to a switch obvisouly creating my two networks. the problem I have...

Hi all,Here's hoping someone can shed some light onto this. I have the following configured on a 7606 core-router:interface TenGigabitEthernet1/6 mtu 9216 ip address ip router isis!router isis net 49.9200.1921.6810.1028...

Hi guys..I got a issue with NTP synchronization.We got a scenario like thisaccess switches-->dist switch --> ntp serverdist switch is synchronized with serverbut all the access layer switches are not getting synchronized... on access layer switch we ...

Hello,i have enabeld DHCP snooping on a switch:ip dhcp snooping vlan 10ip dhcp snoopingThen plugged in a Cisco router (fa 0/2) that has a DHCP scope and then did an "ipconfig /release" then "ipconfig /renew" and the laptop doesn't get an IP, great.Ho...

Hi,We have a current 3-stack 3750 ( 48-P,48-TS & 3750v2-48PS ) running fine. There is a plan to introduce a fourth stack member ( 3750X-48P ) into this stack.as per cisco documentation, it suggests to use 3750X as master for a mixed stack. In this ca...

suthomas1 by Level 6
  • 5 replies
  • 0 Helpful votes

Hello,i have:two nexus 5596 connected each otherthe mgmt0 is NOT in useSVI for keepalives with IP address and /30 netmaskvpc-keepalives running over fiber in e1/1. this works welluplinks to datacenter distribution switch (Cat 6500 VSS) over fiber on ...

acontes by Level 1
  • 7 replies
  • 0 Helpful votes