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1500 questions
6
votes
4 answers
What is the difference between distance vector protocol and path vector protocol
Can anyone explain me what is the difference between distance vector protocol and path vector protocol.
Why we are calling BGP as Path vector protocol .
In Best path selection we use the AS_path length as 4th parameter ..
This is not a silly…
user2720323
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6
votes
2 answers
How does a router know the MTU of a network?
I've done several exercises where you're given the MTU of a net or subnet, but I wonder how routers know the MTU of the nets they're connected. I've learnt that in OSPF protocol this information is excanged among routers. However, is there another…
Josemi
- 185
- 3
6
votes
1 answer
Two boot system images in cisco router
on my router I have two boot lines:
boot-start-marker
boot system flash c1900-universalk9-mz.SPA.157-3.M3.bin
boot system usbflash0:c1900-universalk9-mz.SPA.157-3.M3.bin
boot-end-marker
I have a feeling that there should be only one line, and it…
TelePuzik
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6
votes
2 answers
Policy Based Routing for VPN connections with VPN Client configuration
We have a Cisco 2800 router in our company that also serves as a VPN server. We use the VPN Client to connect to our corporate network (pls don't laugh, I know that it is very obsolete but I haven't had the time lately to switch to SSL VPN).
The…
Spirit
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6
votes
2 answers
How to connect a special device in a network
I have a question which is puzzling me.
I have a couple of custom electronic devices (are identical, one is a master and the other is a slave) which implement only up to level 2 of the ISO/OSI layer, so they have only a (different) MAC address
If I…
Lukariello
- 61
- 3
6
votes
1 answer
TX-ring-limit Values
So, I am getting deep into my CCIE study and I just read about the TX-ring-limit interface command. I have used QoS a bit to oversubscribe software buffers to prevent frame loss on switches and whatnot, can you use the "TX-ring-limit" in a similar…
John Kennedy
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6
votes
3 answers
Session layer vs Transport layer
It seems both do the same thing (or establishing a session between two hosts differs from establishing a connection between two?) So what exactly is the difference here that make us consider them as two separate layers?!
Ang
- 63
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6
votes
3 answers
What's the difference between Serial DCE and Serial DTE link?
In the Cisco Packet Tracer we also see the Serial DCE and Serial DTE:
but I don't know what's the difference between them.
26334_zeal
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6
votes
3 answers
Why is the BGP base on TCP 1027 rather than 179?
Why is the BGP foreign address port 1027?
I use BGP to connect Router1 and Router2, but when I show the TCP progress:
Router1>show tcp brief
TCB Local Address Foreign Address (state)
4E976890 10.0.0.1.179 …
three-blocks
- 863
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- 18
6
votes
2 answers
Internet structure and ISP networks in detail
I am studying about internet structure, ISPs and their interconnection. However, I have trouble connecting some terms and understanding the greater infrastructure of internet in more detail. I will explain my view below so let me know if I am…
konstantinosAR
- 179
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6
votes
3 answers
Is there any relation between MAC addresses of a dual band (2.4 and 5 GHz) router?
I have a use case where I need to determine whether two MAC addresses belong to the same router with dual band connection 2.4 GHz and 5 GHz.
When I did some study, I found that the MAC address of all WiFi APs serving 2.4 GHz and that of 5 GHz…
DHARIN PAREKH
- 163
- 1
- 4
6
votes
1 answer
Cisco 3172 asks for LAN_ENTERPRISE_SERVICES_PKG license to enable OSPF and PIM when they are LAN_BASE_SERVICES_PKG license features
I have several Nexus 3100 switches in which I use OSPF and PIM. Cisco says that these features are included in the LAN_BASE_SERVICES_PKG which is included by default in the switches.
Switch1# sh license
license_xxxxxxxxx_5_1.lic:
SERVER this_host…
UaT
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6
votes
2 answers
Is 2 devices connected via a switch equivalent to those 2 devices connected directly?
If just considering the basic functionality of a switch, can I say that 2 devices connected (via ethernet cable) to a switch, is functionally equivalent to having those 2 devices directly connected to each other via ethernet cable?
Rufus
- 163
- 2
6
votes
2 answers
Why are 802.11n data rates for 5GHz not faster than 2.4GHz?
Same protocol, different frequency. So why does 802.11 spec not take advantage of the higher frequency to obtain higher data rates?
elin05
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6
votes
2 answers
Cascaded switches
Say I connected two 24x port Cisco switches together, to make 1 big 48 port layer 2 plane... all on the same network
Say I wanted to get off this to another network, via a router.
If that router is connected to Switch1, with the default gateway…
user10021657
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- 12