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1500 questions
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2 answers

What is the 802.11 MTU?

I keep reading it is 2304 bytes. Wikipedia states it is 7981 bytes. On my WiFi AP, I can set the RTS threshold with a value of 0-2346 bytes (I guess it's MTU + the MAC/PHY header ?) Where does this 7981 bytes come from, and can we have a definite…
pHeoz
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HP Procurve 3500 with K.14 - strange MAC search issue

I have strange issue with HP ProCurve J8692A 3500yl-24G. If I display MACs on port I see it: 3500(config)# sh mac 10 | inc 5cf3fc-a53456 5cf3fc-a53456 But if I try to find where is this MAC then I have no luck: (config)# sh mac 5cf3fc-a53456 …
dsznajder
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3 answers

How to put special characters on ssid

Refer to the picture above. I would like to add the word "FREE" for my SSID. How do I do that? I've seen this ssid around my area but I don't know how to implement it on my router.
nodeffect
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2 answers

Injecting routes in to BGP for advertisement: BGP network command

I am a complete newbie at BGP configurations.Need some clarification on understanding BGP network command. One of our MPLS site routers have the following config : (Pasting only config snippets ) " R1# interface Loopback0 ip address 10.129.110.157…
Indu Reddy
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1 answer

What is the relationship between "System version" and CUCM update versions?

I am writing code to verify that the version I retrieved from CUCM/CallManager (e.g. 7.1.5.34900-7) includes a security fix found in a particular patch/update (e.g. 7.1(5b)su6a). Given that these two versions are of different formats, I am having…
chao-mu
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2 answers

"Local Policy Denied Prefixes" in 'show ip bgp neighbor' output

I've been spending the last week or so troubleshooting some (maybe related, but probably not) issues with Quagga. I have a test router - 7204VXR-NPEG2 running 12.4(24)T6 - with a single BGP session to a Quagga host. The only BGP session on the 7204…
John Jensen
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7
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2 answers

F5 session timeouts

Our F5 load balancers run version 10.2.4. We migrated from Cisco load balancer cards on the Catalyst 6500 and used to be able to run xterm sessions to our solaris and linux servers without the sessions dying after 15 minutes. Our boss is afraid of…
user2561
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6 answers

Users want to work remotely, but need to use the same LAN IP addresses

I have users that need to be able to work remotely. In their current environment they use workstations with unique software that requires their IP address remain the same. Now that they are working remotely, they are assigned a new DHCP subnet for…
raidORlostark
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4 answers

MAC Address table brings several different mac addresses for one port

i have a CAT2960 switch from which i am polling mac address tables the cable from the ethernet socket to the switch is placed in port 24, and i have 2 more pc ethernet cables in port 3 and port 7. when i use the command [sosytee@20090886~]$…
sosytee
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2 answers

Cisco 2960X is 'normal' IOS CLI or not?

I asked a previous question "Low end cisco switch with 'regular' CLI - which led me to look at the 2960X platform as an affordable access layer switch at a branch office.. I know on the older 2950's managing them was the same as managing any other…
A L
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1 answer

Why is routing not working on my Dell N2048 switch

I am in the process of replacing some older Dell Powerconnect switches with a some Dell N2048 switches. While doing this I wanted to go ahead and segregate certain areas of my network using VLANs. Here is a simple example of what I'm trying to…
Michael Haynes
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7
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1 answer

How are ping times computed

I have been graphing ping (IPV4) responses times/vs packet size. I was expecting to see a discontinuity of around 2*MTU/BandWidth in response time around the MTU boundary (actually, around 1464 byte, MTU is 1492 on this particular segment). The…
Alien Life Form
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7
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3 answers

Alternatives to multiple Service Providers

I have one SP right now that serves 100 Sites and we are currently planning to migrate all the sites to a new SP. However, this will be a phased migration, so we will have some sites in the new SP cloud and others in the old one. The SPs will not be…
Brown Taylor
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1 answer

Position of source and destination IP in an IP packet

In an Ethernet frame header, the destination MAC (DMAC) is placed before the source MAC for obvious reasons (stations accept based on DMAC). But why is not the same thing maintained for destination IP (DIP) and source IP (SIP) in the IP Header? Why…
john
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4 answers

what is the difference between a CSU/DSU and a modem?

I'm so confused, both do the same function, converting the analog to digital, but what's the difference?
ahmad fakeer
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