Newest Questions
16,963 questions
1
vote
3
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BGP between peers that are 1 hop away?
I was wondering the need for a static route in the example below where its from AS65100 directly to AS65200 - 1 hop away. A BGP is established, so would there be a need/requirement for a Static Route ...
- 115
0
votes
1
answer
57
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3 firewalls on a layer-2 switch, 1 acts as a default gateway for all devices
I am currently trying to setup a network madeup of a large layer-2 switch, some computers connected to that switch, 3 Cisco Firepower 1120 ASA Firewalls, and other networks beyond 2 of the firewalls, ...
1
vote
0
answers
25
views
Does switches have MAC address? [duplicate]
I need help.
Do traditional (unmanaged) switches have their own MAC address? I know that for normal functionality it doesn’t need one, but do they have one anyway to identify the switch in a network? ...
- 11
0
votes
1
answer
55
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M-LAG: After migrating the VLAN, network accessibility is limited to one switch
colleagues.
I am solving the task of migrating several VLANs from MikroTik to a newly deployed core network, built from two Huawei CE6863E switches combined using M-LAG.
Objective: remove all internal ...
2
votes
0
answers
98
views
Server redirecting packet via gateway in local LAN
I have Cisco Nexus tor switch connected with multiple servers on 25G nic. When I am pinging from server1 to server2 I am seeing higher latency in ping. After tcpdump found server replying ping reply ...
- 4,431
0
votes
1
answer
43
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PBR Traffic back to the interface it came from
I am working on deploying a policy based routing. I created the PBR on the router as follows:
ip access-list extended HAIRPIN_NAT
10 permit tcp 10.0.226.0 0.0.0.255 host 212.25.30.227 eq 443
route-...
- 3
1
vote
1
answer
34
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Arista 7130: How to use authorized_keys with MOS?
I tried ssh-copy-id but I get errors:
Password:
^
% Invalid input detected at '^' marker.
^
% Invalid input detected at '^' marker.
^
I believe MOS doesn't support that command.
How can I ...
- 408
1
vote
1
answer
45
views
juniper qfx10002-36q and 10G ports
I have a Juniper QFX10002-36Q, and I want to install a QSFP-40G-LR4 MPO module in port 9, then connect this optic to a 40G-to-4x10G cassette. Can I use ports 10 and 11 as 40G?
Ports 9, 10, and 11 are ...
- 755
0
votes
2
answers
73
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Inter Router Communication
I'm doing some background reading on OSPF and EIGRP and Inter Router Communication.
This may sound silly but just wanted a wider perspective. From a routing perspective, all hops would be considered '...
- 115
2
votes
1
answer
125
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Adding a new WIC port to Router errors - Packet Tracer
I'm trying a new Fa Port to my router using HWIC-4ESW, for Example the new port is Fa0/1/0, whenever i try to assign in ip to that interface using the command =>
Router(config)# interface fa0/1/0
...
- 23
0
votes
1
answer
30
views
Optimal method to redirect sniffed data from a TCP stream to a third receiver
what would be the best way to solve the issue as depicted below?
In short, I have a running TCP session between server and client - and I need to send the data coming from the server side to a second ...
- 55
6
votes
3
answers
285
views
Cisco Catalyst Switch: Trunk Configuration Not Allowing Communication with multiple VLANs
I have a Cisco Catalyst Ethernet switch.
I would like to setup this configuration:
Ports 18 and 19 are on VLAN 10.
Ports 20 and 21 are on VLAN 20.
I would like port 22 to have access to both VLANs 10 ...
- 163
9
votes
3
answers
2k
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Is 223.1.2/24 (sic) correct way to label a subnet?
I ask this because I am reading a famous book Computer Networking, A Top-Down Approach 8th edition, by Kurose and Ross.
On page 352 (pdf) I have this paragraph:
The mentioned figure 4.23 looks like ...
- 193
1
vote
1
answer
85
views
Cisco vPC election process
Quite a bad scenario. I had a power outage after which only one of two Nexus switches came online. It couldn't establish peer link (of course). I believe I have to elect the master manually, but don't ...
- 111
0
votes
0
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31
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How do DS1, DS2, and DS3 differ from ITU-T G.704?
I like to go to the source documentation to deeply understand topics.
I see the DS1 and DS3 data rates mentioned here:
ITU-T G.704: Synchronous frame structures used at 1544, 6312, 2048, 8448 and 44 ...
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