Questions tagged [network]

For questions about Networking that includes design, and use of a network, the physical cabling, hub, bridge, switch, router, and so forth. Anything in relation to networking and its technologies.

24 questions with no upvoted or accepted answers
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247 views

Cisco nexus 9396 rebooted with reason xbar_client

Today my one of cisco nexus 9396PX switch got rebooted and this is what i found, based on following logs what could be wrong? We don't have Cisco support for this switch, trying to see if i can get ...
4
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0answers
585 views

Cisco nexus STP loopguard

I have cisco nexus switches in vPC and they are connected to HP c7000 blade center switches and all my c7000 blade server has Linux Bridge is running, i believe something went wrong somewhere in Linux ...
3
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2answers
238 views

What is the advantage of Supervised Machine Learning over Deep Packet Inspection in Network Traffic Classification?

As per the definition of Deep Packet Inspection (DPI), it uses signatures for packet filtering. Supervised Machine Learning can help put a label on a packet which does not get identified by Deep ...
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71 views

EVPN+VxLAN strange silent host issue

EVPN+VxLAN very strange silent host issue I have very basic EVPN+VxLAN design where i used OSPF/Multicast/BGP/vPC technologies to build small size datacenter. L2VNI working great without any issue. I ...
1
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0answers
29 views

Mistakenly added switch configuration on Cisco router 2951 so now it is showing gibberish data on CLI

I have Cisco 2951 router in which my colleague mistakenly uploaded switch configuration from tftp server. Now it is showing gibberish data on CLI when it boots up. I tried to get into the ROMmon mode ...
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0answers
863 views

How to check vlan interface traffic on Cisco nexus 9k

I have Cisco N9K-C9396PX L3 switch which has VLAN interface configured for my LAN gateway and i want to monitor how much traffic vlanXXX handling, I have configured SNMP monitoring to pull interface ...
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0answers
274 views

Help with network setup issue (small network)

I am trying to set up a new network for a small business, and I can’t figure out what I have misconfigured. Hoping someone can provide me with some ideas. I have 6 VLANs set up. 10.10.10.0/24, 10....
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0answers
238 views

Simple Token Bucket - Policing - Terms - CIR, CBS

I have gone through token bucket algorithm. However, I am struggling to apply this knowledge into the real devices like CISCO, etc. So, for QoS policing, interface meter. I am trying to understand ...
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0answers
51 views

QOS - the need for it and verifying it

Just some straightforward questions, hope gurus here can shed some light 1) show int - output queue -> this is the hardware queue (tx-ring) or this is the software queue ? if I see drop, this means ...
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0answers
652 views

Even ips pinging but odd ips not pinging

We have following network, and i have multiple host connected to TOR switches configured with public IPs. We have HSRP running on vPC switches. interface Vlan100 description *** Public VLAN *** ...
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0answers
276 views

How does a Switch Fabric Module work internally?

I am interested how does a switch fabric module work internally. What interfaces does it use to physically connect the I/O modules on switches? Where are the CAM / MAC tables of the switch? Are ...
0
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1answer
14 views

Connect to application hosted in private network on a private DNS from outside world

I have an application hosted in a 2 VMs in a private network. Out of which one application is accessible from the outside world and the other one required private DNS. So outside users are not able to ...
0
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0answers
15 views

What enables the UE to make calls to more than just an emergency number once it's registered to a cellular network?

UE can camp on to the nearby eNB and still be able to receive RSSI signals regardless of whether the SIM is inserted or not but you would only be able to make emergency calls? What really "...
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0answers
23 views

Download ExtremeXOS

I need to update the extreme switch, I found a lot of instructions but I don't know where to download the latest version of extremeXOS. Thanks a lot in advance for your help.
0
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1answer
32 views

STP Portfast Networks

I have switched network and on all access ports I've configured spanning-tree portfast edge When I enable spanning-tree portfast networks on trunk ports 1/0/51-52 every access port is blocked. Do I ...
0
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1answer
87 views

Ping to default gateway failing

I am trying to ping to a default gateway which i have configured as 171.2.0.1 but somehow the ping is failing . I am new to network domain so i have less idea about it . Any help is appreciated .This ...
0
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0answers
86 views

Untagged VLAN in EVPN+VxLAN

I am dealing with very strange issue but wanted to check with experts if i am doing anything stupid or not. I have small size EVPN+VxLAN clos network (OSFP+iBGP+Multicast+Arp-suppression (no ...
0
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0answers
107 views

vPC + HSRP load-balancing issue on Cisco CML 2.0 lab

I am playing with new cisco cml 2.0 lab simulator and seeing strange behavior not sure if its real issue or limitation of cisco lab. dist1 and dist2 is my vPC (NSOX 9000v) peers, and tor1 is IOSv ...
0
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1answer
153 views

How is the PPP protocol byte-oriented as well as bit-oriented?

Many articles considered PPP as a byte-oriented, and the others mention it as a bit-oriented. +----------+----------+----------+----------+------------ | Flag | Address | Control | ...
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0answers
52 views

Cisco Router Interface Connection Problems

I am new to networking and am configuring, I am trying to setup my connections in packet tracers for 3 different routers to talk to each other over Serial ports as attached. However, I did notice ...
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0answers
15 views

Comparing ETX with PRR with retransmissions

Expected number of transmissions (ETX) and packet reception ratio (PRR) are two routing metrics that exist. Based on my understanding, the packet reception ratio reflects the link quality. If you ...
0
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1answer
70 views

Design of 2 Lans Connected to a Watchguard m570 firewall

I have this architecture (without the firewall). I bought a Watchguard M570 as Firewall to add it in my network. My Question is : Could i use my watchguard and connect this one to my 2 LoadBlancers ...
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0answers
86 views

I'm unable to see packet drops after configuration of QoS policy

I aim to send iperf traffic from Endpoint1(Client) to Endpoint2 (Server) with the following SR path = {R1, R2, R3, R4, R3, R2, R1, R2, and R3}. First of all, the traffic generated by iperf from ...
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2answers
52 views

How to Balance SPAN Traffic from Redundant Switches

So we are wanting to deploy an IDS device to capture EAST-WEST traffic in a LAN. The actual topology is more complicated but our issue boils down to this: We are attempting to configure SPAN sessions ...