I have been working to enable DAI in my environment the past week. We have had DHCP snooping enabled for years now but we are looking to enhance our security posture. I wanted to leave a few notes to people who are trying to enable this on their swit...
Forum Posts
HI. I running many dhcp servers in a cisco switch. I would will like to have access to the clients by hostnames from a computer. The problem is that i only can do it in the network connected to my computer. Even if i switch to another one the same ha...
Hello,i have Cisco switch c3850 connected to VTP server (Core Switch C6509) ,when i sh Vlans bref working fine , but i can't ping between Vlans also i have c3750 connected to VTP server everything is working fine.
Resolved! VSS Fast-Hello with dual connection
Hello Folks! Could you someone tell me if it's possible to use 02 interfaces (ether-channel) to VSS Fast-Hello?today I'm using one, but after someone removes the cable and the core loses all connection with access switches, I want to create redundanc...
Hi, I have a cisco 3650 switch where 3 devices are connected to its tengig ports. All 3 ports are in same vlan and are recieving same multicats. PIM-SM is configured on this vlan. my problem is when I disconnect one device then other 2 devices loses ...
I need configure PAgP and IPv6 on L3 switches, but I Can`t do this.
Hi guys, I have a question around Catalyst9400 hardware queuing. We are planning to replace C3750X stacks with Catayst9404R switches. Currently 4Q3T model (without priority queue) is deployed on C3750X and we want to retain existing QoS configuration...
Resolved! Cisco Packet Tracer
Hi, I'm using the cisco packet and I'm trying to connect the Ip Phone but I couldn't get the IP to the IP Phone. I already configured the DHCP Server including the VLAN for the data and voice. Also, I can receive IP to computers. please hel
Hi All, I have 2 questions: 1stI ordered C9200L without license when to buy to stock. My question is: will the basic funcionality work without DNA licencses? If i only need L2 switching. (cutomer is asking, if this is possible)Or is there any trial ...
I know it runs RSTP for each instance within the region, but does it run RSTP at the region boundry as well?
CDP and STP - these frames are sent to well-known MAC addresses 01:00:0c:cc:cc:cc and 01:80:C2:00:00:00, respectively. How do Cisco switches handle multicast traffic? Is layer 2 multicast traffic sent to devices that do an IGMP join to the CDP / STP ...
Hi Friends I was trying to change MTU size in Cisco SG-350-28SFP switch. The command Switch(config)# system mtu 2500 is not working. This command is not available. I want to change the MTU size from 1500 to 1600. Can anyone help how we can do this? ...
Hi Guys, I just had a doubt, does the mentioned IOS release support SSH v2, coz I checked out in the feature navigator and didn't see thee SSH v2 supported, is that true, need your help, thanks in advance.HTHKrishna
Hello all,I'm fairly new to Cisco configuration and I am looking at a problem for a client that involves the use of a Cisco 887 (wired only) as the main router/gateway.The problem I am investigating involves the allocatoni of DHCP addresses from the ...
Hi All,ok so my 350XG is all configured up and I need now to connect it to my existing (to be replaced) infrastructure.So I configured the following; interface TenGigabitEthernet1/0/7 description DELL-STACK-TEMP switchport mode trunk switchport tr...
