VLAN 10 (IP range 10.10.X.100 - 1.200)F0/1,F0/2,F1/1,F1/2 --> Belongs to VLAN10 of L2 SW (all access ports)HostA(10.10.X.110) -----> [F0/1] (SW) [F1/1] ----> RouterHostB(10.10.Y.300) -----> [F0/2] (SW)[F1/1] -----> RouterImagine a situation where I h...
Forum Posts
How to see whether port-fast is enabled on a port or not ?Here port fast is disabled globally.switch0#sh span sumSwitch is in pvst modeRoot bridge for:Extended system ID is enabledPortfast Default is disabledO/p of show spanning...
IOS-XE Software, Catalyst 4500 L3 Switch Software (cat4500e-UNIVERSALK9-M), Version 03.07.00.E RELEASE SOFTWARE (fc4) Following this guide which doesn't line up to what I am seeing in the CLI: http://www.cisco.com/c/en/us/td/docs/switches/lan/cata...
Resolved! VLAN Information across L3 network
Hi Everyone! I need to clarify myself about VLANS. I have a topology like below. My question is that, does the vlan information from HostA travel across the L3 network and reach the otherside to HostC? Because I tried this topology and the hosts ar...
Linux1 [eth1.20] --------[F1/1](SW1)[F1/2] --------[F1/2](SW2)[F1/1] ----------[eth1.20] Linux2When we configure VLAN on any NIC in Linux does the server tags the packet with the VLAN?Linux1 & Linux2 part of VLAN 20. They are configured as eth1.20. W...
Hi, I am now trying to add an ASA firewall to my network simulation. But I am having issues with it as I have not done much firewall configuration, I have spent all day trying to configure it, I removed the configurations i added as it only seemed to...
I am verifying an inventory for a client for which my company is upgrading the network equipment. I have a few serial numbers without the model number on my inventory and wanted to know how I can look up a device and get the model number. I do not ha...
Hello,I am on a 48 port switch and I have shutdown ports 20-40 using the interface range command, now I need remove the lines of config from those ports. Normally I use the no command but it takes ages as the ports are quite specific, is there a qui...
Hello all, I currently have a Cisco Nexus 3172 that was rebooted and link failures began to happen shortly after. ETH_PORT_CHANNEL-5-FOP_CHANGED: port-channel100: first operational port changed from Ethernet1/5 to none%ETH_PORT_CHANNEL-5-PORT_DOWN: p...
We recently upgraded our switch stack to new ios. Now, when we try to save the config we get the following errorsnv_done: unable to open "flash:/config.text.new"nv_done: unable to open "flash:/private-config.text.new"nv_done: unable to open "flash:/...
hey guysi have a questioni´d like to prevent duplicate ip add in the network.for examplo, if the user setup the ip address of gateway , are there any mechanism that can prevent it , to minimize the impact ?thanks
Resolved! HSRP
Hello,As per the below topology. I have 3 switches connected to each other.Port has been blocked between S1 and S2 due to STP.All three switches have IP's configured as the gateways.Host H1 is connected to S3 and has it's default gateway configured a...
Hello All, My network team updated layer 2 security configs on a Nexus Switch 3172(not stacked) and some of the configs (ip verify source, dhcp snooping, ip arp inspection, block unicast) knocked off connectivity to some VMhosts on VCenter. VCenter ...
Hi in nxos 9.3.12 i have many routes /24 /21 /20 have bgp community no-exportNow i want Create bgp Session with ASX and announce all routes to ASX ASX is ebgpHow can do this by route-map ?? route-map no-export, permit, sequence 10Match clauses:ip add...
I have a DHCP server in my project which gives all ip, also I need to make 4 pc which will have static ip, and I need to ping them with pc which has dhpc setting on pc with static ip how can I do it? I have one router. for examplePC59 > PC30PC30 ping...
