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Forum Posts
Resolved! STP Loops
We had a trunk link go down on a switch due to the fiber cord being bent. I replaced the cord and wanted to add a redundant link just in case this happens again. When I added the second fiber to trunk link, a loop occured instantly. Once it was unplu...
Hi, This is a newbie question. This is what I think I understand. Correct me where I am wrong please. I am trying to reach a host that is behind a firewall on a private network. I send the IP address and port for the gateway which the host I am ...
Resolved! Policy Based Routing - Assist
Hello, I require some help/advice. We have a stack of 3750, which is the default gateway for all our Vlans. The gateway of last resort pointing to our external Firewall is 10.62.0.5 We are in transition to use another firewall from a different v...
Hello, I facing difficulties on my LAN. I've a core 3850 stack, and 2960X access switches. An OEM switch is connected to the 3850 in a meeting room. When some PCs are connected on this switch, MAC Address going into 3850 mac address-table : 3850#sh...
After upgrading the IOS on a Cisco Catalyst 3850 and rebooting, the switch gives the following error and can't get out of bootloader mode: Error loading "flash:packages.conf" Interrupt within 5 seconds to abort boot process.Boot process failed... The...
Hello everyone, In our computer park we have two C3750 in stack. The rest of the switches are Cisco SG300-28P. Which way should I set for it to be compatible in both models and the C3750 model be the root?
Hi, I have 2 Nexus5000 completed with 2 nexus 2000. I am trying to get a vPC up between both. On the nexus 5000 : Int eth103/1/13 switchport mode trunk switchtrunk trunk native vlan 110 switchport trunk allowed 2,3,4 channel-group 121 mode active ...
Resolved! telnet session capturing !?
hi, If you change the tenlnet port to be something other than 23, like 2010, if this packet was captured, can it be identified as telnet packet?
I have been banging my head for a couple of hours now trying to get an APC SmartUPS 1500 to take a DHCP reservation. I have followed the doc here as well as this. I have tried placing the reservation within its own DHCP pool, as an entry under the ...
Hi, We have 2 Cisco 3750E switches. One of them is WS-C3750E-24TD-S and the other one is WS-C3750E-48TD-S. They have C3750E-UNIVERSALK9-M 15.0(2) SE1 IOS image loaded. They stacked each other and have about 15 SVIs on it. Normally everthing is ok. ...
Hi! I cannot set the hardware clock on Sup 7L-E (quad VSS) with the following SW version: 03.05.00.E.152-1.E I have tried these commands, without any effect: - calendar set- clock update-calendar- ntp update-calendarcore1#show ntp ass address ...
Hi we using the following topology 1- 2 x N9396TX vPC 2- 2 x C6800 VSS 3- HP blade system C7000 and virtual connect SW the configuration: we configured the N9300 using vPC and 6800 using VSS hp blade system is virtualized using ESXi 5.5 and we have m...
Dear Experts,My switch running is normal but suddenly it has problem with red light(Output fail) as attached file.I also try reboot but seem to switch can notThere is output while switch reboot: ******************************************************...
Hi, We have a campus network where students in their hostels are connected to the network through 2960 switches. On theses switches were have port fast and bpduguard enabled. But since past few days we are observing that a particular users' port is b...
I want to make secondary ip address effective on the happening (say reachability failure using ip sla) of certain condition/event. e.g. ip sla 1 icmp-echo 123.12.1.1exitip sla schedule 1 life forever start-time now!track 1 ip sla 1 reachability !int...
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