I'm running into a weird issue with a few CSR1000v routers running on ESXi 5.1. I've created 10 VMs and of those 10 instances, I have 1 router that seems to insert an extra line (or carriage return) in the CLI whenever I hit 'enter'. This issue has...
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Forum Posts
If anyone has a working ERSPAN config between two nexus 7k switches or between two nexus switches, can I take a look? I seem to be having some difficulties configuring it, and the source monitoring session refuses to go up. Thanks!
Hello!Jan 19 20:57:46 MSK: %SIBYTE-DFC3-4-SB_EXCESS_COLL: Excessive collisions on mac 1 (count: 263)Jan 19 20:57:46 MSK: %SIBYTE-DFC8-4-SB_EXCESS_COLL: Excessive collisions on mac 1 (count: 268)Jan 19 20:57:46 MSK: %SIBYTE-DFC7-4-SB_EXCESS_COLL: Exce...
Hi, I have using a switch cisco 2960s-48ts-l. the cpu utilization of the switch more than 95% every times. There is no dynamic arp inspection in enable but still HULC DAI process about 45%. How to stop this ? thanks debabrata
Resolved! 1:1 static NAT vs port forwardng.
Hi all, I understand NAT is taking 1 internal IP, translating it into a routable public IP to the internet when going out of the router public facing interface.While port forwarding is more for incoming traffic, whereby access to a pubic IP's port is...
I have a 2960X POE switch that I have used to isolate a server. I am using an ACL to limit user access to it and also have a backup appliance that needs to connect to the server to keep the backup's up to date. BUT... the backup server keeps losing c...
Hi we are getting the above error, we have issued the no ip cef optimize neighbor resolution command and cleared all the ARP tables yet we are still getting this error for 3 IP's Any ideas how we can fix this we are running ios 15.0(2)SE9
Cisco IOS Software, C2960X Software (C2960X-UNIVERSALK9-M), Version 15.2(2)E3, RELEASE SOFTWARE (fc3) Trying to accomplish the following on a 2960XR Takes this command: track 10 ip sla 11 reachability ip route 10.200.250.0 255.255.255.0 10.1.10.1 tra...
I am new to smart licensing. So i have registered these switches 9500 switches. But I have few questionsWhat if they loose communication to cloud, would the device fall back to eval?If it fallbacks's to eval/expires, do we get a notification of any ...
Hello Friends, I have a question about how the switch can learn the mac address in a common network. I know that when we have a router on the network when we communicate through IP addresses it also helps to get the MAC address of a device but how do...
Resolved! Understanding routing between VLANs
Hi there,I hope this forum is ok for posts like this in which I ask for clearance in a topic...So in order to send a packet between vlans i understand we need to change the switchport to trunk, But what is actually happening "behind the scenes" when ...
Hello everyone, How do I get the manufacturing date of N2200-PAC-400W PSUs?
Help needed! We have 7004 Nexus switch and 3850 switch(C3850-24S-S) with 10GE Network Module(C3850-NM-2-10G) installed. The Nexus 7004 has 1/10 Gbps Ethernet Module, N7K-F248XP-25E. We bought 2 SFP-10G-LR from OSI. And they both show up from the "sh ...
I installed a 3850 switch and it can not activate NTP, TACACS services from external servers and I can not telnet out L2 network. My connection is through routed port. Could you help me?Networking
We have installed a C9300-48P and the downlink is on C9300-NM-4G/1000baseSX which is connected via MM.The link connects to WS-C4507R-E and the uplink is on WS-X4306-GB/1000baseSX. UDLD is enabled globally on theWS-C4507R-E and C9300-48P and is const...
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