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1500 questions
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1 answer

What is the jsrv.1 interface for?

I have a Juniper EX2200 switch running JunOS 10.4R4.5. Under Configure -> System Properties -> Management Access, I can configure which interface allow management access. There is a mystery interface call jsrv.1. jsrv.1 is not listed in the…
myron-semack
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3 answers

Sending less data than the TCP buffer could take

The accepted answer of this question explains: When you send data, your TCP buffers it. So if you send a character it won't send it immediately but wait to see if you've got more. But what if I don't have that much data to send? How does TCP…
TimSch
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1 answer

Cisco 3750X Power Cable

I received a Cisco 3750X the other day. I went to go plug it in for testing and found that the standard three prong female power connector is no longer compatible with the power supply. Cisco has added a notch to their power supply port making the…
Craken
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6
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0 answers

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 help from community otherwise last option is…
Satish
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6
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1 answer

VPN client to multiple locations simultaneously

I need to connect to 15+ locations to run network scans weekly. All the locations have Fortigate firewalls over which I have full control. The current solution I have is to connect via IPSec VPN to each location one by one to run my scans. I have…
freb
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6
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2 answers

Change Ping Response for Traffic Blocked by Access Control List

I am trying to ping a host, let's say 10.1.1.1, from 20.1.1.1. I have created the ACL: R1(config)#access-list 1 R1(config)#Deny 20.1.1.1 R1(config)#Permit any R1(config)# int s0/0 R1(config-if)#ip access-group 1 in Never mind the configuration, I…
user3146180
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6
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2 answers

APIPA and LAN Broadcast Domain

I just want to know can a Local Area Network broadcast domain be operated by only relying on APIPA?
Pooja Rajput
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5 answers

Reset admin password on Fortinet FortiWiFi 60D

I've tried to log in to this device by doing the following. Default credentials username: admin password: Maintainer credentials in the FortiExplorer console interface. username: maintainer password: bcpb + serial number Holding the reset…
Nick C.
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6
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3 answers

Why do all the intermediary routers need to run iBGP without tunneling?

I'm trying to understand the configuration behind iBGP - I understand you can run full mesh to prevent loops, run confederation or route reflectors, if you don't want full mesh, else run tunneling like GRE or MPLS for BGP free core. However what I…
JuniorPenguin
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1 answer

What does routing an IP address mean?

From https://stackoverflow.com/a/40189197/156458 Blocking 0.0.0.0 makes no sense. In IPv4 it is never routed. What does "routing" a IP address mean? Why is it the reason that blocking 0.0.0.0 does not make sense? Thanks.
Tim
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Can non-recursive BGP route be used to determine next-hop for recursive BGP route?

In BGP recursive scenario, the recursive route is taking an unexpected next-hop. Here is the routing table: S* 0.0.0.0/0 [10/0] via 10.10.10.1, wan B 172.16.5.0/24 [20/0] via 172.80.80.1, MPLS, 2d18h20m B 192.168.250.0/24 [20/0] via 172.16.5.1…
onlyforthis
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6
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2 answers

VLAN Interface is down, protocol is down

I have Cisco Layer 3 switch with IP routing enabled on it. I have different VLANs configured on it and its working perfectly. Now i have added another VLAN (SVI) and assigned that VLAN to one of the port , but VLAN interface is still showing…
Junaid
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6
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8 answers

What do the positive and negative (+/-) transmit and receive pins mean on Ethernet cables?

So I'm trying to understand the pin layout of an Ethernet port, specifically for 8P8C which to my understanding is the most common. Of the eight pins, only four are apparently used for communication, as depicted below where pin 1 and 2 are TD+ and…
haxonek
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6
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1 answer

Bandwidth limit Cisco 3400 ME problem

I want to limit bandwidth (speed) of interface of Cisco 3400 ME switch. I did these: policy-map parent class class-default shape average 64000 And in gi0/2 interface I apply it: service-policy output parent It gives me this error: QoS:…
it dev
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3 answers

Are network protocols and routing protocols different things?

When reading about network protocols it says they are a set of rules and format for communication between devices over a network, so basically an agreed way of how to communicate over a network. But then I came across routing protocols which are…
The_Bear
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