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First post in the forum here, really hoping for some assistance. Here's the background: Until last year, we were using Cisco 3560G as edge switches and 3750E for distribution at each school site. No QoS was configured. No issues with the Polycom IP ...

I have the following weird behavior that I would like to understand. I am setting up (stage) a group of 3850 switches and a 4500x core. One of the stacks (3850) has the following repeating connections. VAN-SRV3850#debug ip tcp packet address 192.168....

Hi, Can any one provide me the alternate CAT OS command for below IOS commands  Switch(config)#ip access-list extended 100Switch(config-ext-nacl)#10 permit tcp host 192.168.1.1 any eq 22Switch(config-ext-nacl)#20 permit tcp host 192.168.2.1 any eq ...

Hi I am hoping someone can help. I have inherited the Cisco infrastructure for a number of our customers. I have had to replace a Cisco 877W with a new 887W. It is a multiple SSID setup with2 Vlans.  Vlan 1 - Management Vlan 2 - Guest. Now everythi...

richard by Level 1
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Resolved! Invalid ARP

Offten in switch logg we see Feb 13 12:30:21.418 GMT: %SW_DAI-4-DHCP_SNOOPING_DENY: 1 Invalid ARPs (Res) on Fa0/14, vlan 159.([xxxx.9b4f.645c/xx.240.9.159/xxxx.742d.5400/xx.240.9.190/12:30:20 GMT Sat Feb 13 2016]) and dhcp snooping binding says: 1#s...

eXPlosion by Level 1
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HI, We deals with 1000s of vlans and we need to take few logs from the desktop from 10-30 Vlans at a time. We are looking for an option like once the traces/required logs taken from one vlan, the interface which is connected to the system nee dto ge...

Resolved! Ping

How i can stop pinging particular computers from different networks even routing is configured properly and without using acl?

Hi, I currently have 2 4500X switches current independent with a trunk link between them in production. I want to configure them for a VSS and I have a couple questions. 1. What will happen to the existing configuration of both switches? Will it al...