Hi, We use Cisco Nexus 3550-F Fusion switch product in our HFT firm. Currently, we have two separate physical market data feed connections to exchange market, namely primary and secondary, which carries exact the same data. These two separate fiber l...
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Resolved! Spanning Tree with vPC and non VPC
Hello dear community,I am currently trying to understand an existing topology and its spanning tree (screenshot attached).This is probably a topology that deviates from best practice.We have two nexus switches and a cat switch in use. nex4(secondary)...
Hello Friends! In IBNS 2.0 Deployment Guide I read that we can define IDLE timeout for our access-session in policy If we use additional "probe" parameter switch have to check availability of silent endpoint(arp probing) I defined service template ...
Resolved! Nexus 5K VPC saving config
We have a Nexus 5K setup as a vPC pair. I can log into the "primary" do a config update and copy run start saves the config. If I log into the Secondary and make a config change, doing a copy run start results in: Sec# copy run start[##############...
Hi,If I have core , aggregation , access . Access is layer 3 ( vlan interface on access switch ).In that case what is the role of aggregation Thanks
Resolved! Why DHCP option has "magic cookie" ?
In RFC 951, the format of BOOTP packet was legislated, but the vendor information was not legislated in this document, so the authors of this document had described that :"If the 'vend' field is used, it is recommended that a 4 byte 'magic number' b...
Hi, I have a Cisco Catalyst Switch C9200 that I'm using as a DHCP relay agent on VLAN 5. The DHCP server is on a different subnet (hence the reason to use DHCP relay). VLAN 5 has an IP address with IP helper address configuration as you can see:inter...
Hi,Between stackvise1 and 2 l3 connectivity ,between core 5 and core 6 l3 between site 1 and site 2 l3 connectivity . any pros and cons with the below topology ? Thanks
Group,Is there a way to or a command line to use that will allow me to extract / uncompress a .tar file in Flash while in ROMMON mode?Thanks,Doug
Hi Hope you doing great seniors, I don't know if this is a valid question but i was trying to google and all but couldn't find anything related or maybe its not possible, just for my clarification kindly guide me if this is possible. is there any way...
Hi,If I order catlays 9600 , 2 x10G line card will be free with the chasis ? Thanks
Resolved! 9300-24S and GLC-TE issues
Hi, We're having issues with a couple of Catalyst 9300-24S switches that we've recently deployed as a stack. When we insert an official Cisco GLC-TE, the interface instantly goes into err-disable with:- "The inserted SFP module with interface name G...
what is top Tech interview question for network engg L2 to crack interview ?
Resolved! SSH to broadcast address possibility
Can you SSH to a broadcast address? For example, is it possible to SSH to 10.0.1.15 that's falling inside 10.0.1.0/28 subnet as a broadcast address? or it makes sense to SSH to a router with an IP adds that's considered to be a "Host" IP adds?
Hi,I have 28 access (stack with 4 ) is connected with 10 g Uplink to one core switch ?what switching capacity should i look for , and forwarding rate 500 Mpps is enough ? Thanks
