Ask Me Anything Event Welcome to the Cisco Community Ask Me Anything conversation. Submit your questions from Monday, November 4, 2024 through Friday, November 15, 2024. Our colleagues Rohit Chopra, Vaibhav Aggarwal, Anuraag Majumdar, Saquib Zeya...
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Hi experts.When i turn on eigrp on 2 routers connected via ethernet interfaces, i see them exchanging hellos and then exchanging null update packets (using wireshark). Why is that so ? By null means, no prefixes are exchanged just a simple update pac...
Resolved! some fundamental questions
Hi All,I understand how a root bridge is selected - that is the one with the lowest Bridge ID.But this is easily seen when we know how many switches there are in deployment and what bridge ID each switch has, my question is how does a switch figure i...
A customer trying to implement PVLAN in the network. It's a simple setup, see attachment, with one dot1q trunk in with two secondary PVLAN and one trunk with a primary PVLAN. This works well if only one secondary VLAN is used and configured as “isola...
Hi Is it possible to migrate L2 switch to L3 switch. If possible so ple tell how, what is step for this.....Regards ...
Hi,I've connected several 2960G switches to a 3560 "core" switches. They have been connected using a port-channel consiting of two gigabit ports, like this:2960G Config:interface GigabitEthernet0/21 + 22 description TO_3560 switchport trunk allowed v...
Resolved! ethetnet with snap header
Hi every body.I have few questions about Snap header in the 802.3 ethernet.My book says" another popular option exits for the protocol type field,particularly when sending ip packets. If the 802.3 type/length has a value less than 1536,the type/leng...
Hi all.I have a 3845 router with 256 DRAM and 64 flash. IOS is 12.4(20)T advsecurity. This router is serving as a hub to more then 150+ branches. Firewall is connected to this router and beyond the firwall are 2 internet connections as well.At peek t...
dear alli have user in vlan20 and all datacenter servers in vlan1 inedd to give permission to this user so he can access only one server in another vlan1how can i add this server to both vlan 1 and vlan 2
Resolved! Basic router config
Hi,I must be losing it. I'm setting up a 1721 router internally on my nework. I've configured both interfaces and both are up up. I've configured a default route and a name server but I can't seem to get it to route. can anyone see anything obvious?R...
im wondering if there is anything to be gained by having 2 trunks running across my distribution layer switches, where each will allow only the vlans for each switch block....so switch block 1 which includes access layer switches 1 and 2 will support...
Hi,I need to limit bandwidth or Reserver bandwidth for a network, Eg:Iam having 1Mbps connection and there are two vlansNetworkA128 is for Voice128 for Web256 for dataandNetwork B256 for Voice in this network256 for data in this networkB.So any netw...
I have a 3550 ans 3560 switches connected together over three link, so I configured switch port mode to be desirable on the 3560 and switch port mode auto on the 3550. they trunk normaly, but when i configure portchannel like the config below, they p...
By default there are three types of traffic that pass through Catalyst switches:Control trafficManagement trafficEnd-user trafficControl traffic includes CDP, VTP ,PAgPManagement traffic includes end-to-end and IP-based protocols such as Telnet, SNMP...
Resolved! port fast and 3500 XL Switch
Hi,i got 2 3500 series XL switches for labing. I already know that I can't use int range for configs because of the old IOS 12-0-5.WC17, its actually the highest one that can run on it, memory limitations for higher IOS i gather.Anyway, is there a wa...
I've got a problem I can't quite pin down.I have two 6500s running VRRP on 12.2(33)SXH3. One particular svi on Core2, interface vlan20, is having some trouble.Core 1:interface Vlan20 description Server VLAN ip address 10.100.20.2 255.255.255.0 ip fl...
