Minimum Acceptable Size For Preamble In Ethernet Packet
Jun 5, 2012I want to know that what is the minimum acceptable size of preamble in ethernet frame. if it is less than 7 bytes before sfd begins , will the packet drop?
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Cisco WAN :: 7204 - Small Packet Size And Full BGP Table
Feb 7, 2012I'm looking for a Cisco device to run a full BGP table with a 60Mb link. And one of the main restrictions is that my traffic is almost 100% real-time (voip). So the average packet size is small. Today we own a Cisco 7204 NPE400 with 512Mb RAM. I think even though I upgrade it to a G2, due to the small average packet size, the router will be near to its limit. Maybe a Cisco 7300 NSE-150? Or should I think about a switch?
View 3 Replies View RelatedCisco VPN :: Cannot Ping Packet Size Larger Than 9200 Over IPSec On ASR
Feb 22, 2011I have an existing site-2-site VPN between a Cisco 2621 router (IOS 12.3) and Cisco 1841 (IOS 12.3) and I can ping packet size of 17000 over the IPSec tunnel without any issue:c2621#ping 192.168.230.254 source f0/1 repeat 20 size 17000,Type escape sequence to abort.Sending 20, 17000-byte ICMP Echos to 192.168.230.254, timeout is 2 seconds:Packet sent with a source address of 192.168.208.254!!!!!!!!!!!!!!!!!!!!Success rate is 100 percent (20/20), round-trip min/avg/max = 144/146/148 msc2621#I replaced the Cisco 2621 with a more powerful ASR 1002 running IOS version asr1000rp1-adventerprisek9.03.01.00.S.150-1.S.bin. However, I can not ping packet size larger than 9200 over the IPSec tunnel:Feb 24 02:42:52.362: %IOSXE-3-PLATFORM: F0: cpp_cp: QFP:00 Thread:015 TS:00000015834854465792 %IPSEC-3-PKT_TOO_BIG: IPSec Packet size 10072 larger than maximum supported size 9216 hence dropping it.Success rate is 0 percent (0/10)asr1002# Why is not working? Basically the more expensive ASR router can not perform the same task as the old Cisco 2621 router.
View 6 Replies View RelatedCisco :: ASA5540 - Run Firewall To Display MTU Packet Size Being Received On Interface?
Jul 5, 2012I have a ASA5540 firewall set-up with an interface MTU of 1500.
I suspect that we are receiving packets with a larger MTU but have not found an easy way of confirming this. Any command that can be run on the firewall to display the MTU packet size being received on an interface?
We are also running Solar Winds so could query an OID if such a variable exists.
Difference Between Long And Short Preamble And When To Use Each Of Them
Oct 22, 2011What's the difference between Long and Short Preamble and when to use each of them?
View 3 Replies View RelatedCisco WAN :: 3825 - Packet Loss On Ethernet P2p Link
May 7, 2013I have two routers, Cisco 3825 and 2811 connected via a p2p ethernet link. The two sides of the links have Huawei muxes with 100/ full duplex set on their interface. I am facing almost 40% packet loss but the supplier is unable to identify any issues at their end. We have tried setting different combinations of duplex and speed settings but no improvement. When set to auto/auto the interfaces are negotiating to half duplex and I am sure this is the cause of the packet loss. Also I heard of auto-negotiation on MUX ports but supplier confirmed no such settings but only 100 Full duplex. If the router iterface is negotiating to half duplex so I suppose there is some thing with the negotition problem with MUX and router port ?
On C3825 I have a Gig interface whileas C2811 has fastEthernet. I guess Gig interface should not negotiate ? Is there a way to pin point the exact fault to supplier ? Also is there work around for this?
Acceptable Characters In Ping?
Apr 16, 2012I took a SANS 401 class a few years back, and I remember them showing us how you could break PING (buffer- overflow? memory stack?)by pinging things you wouldn't normally.This was on WinXP I can't duplicate this on Win7, and have forgotten what exactly it was we typed in....I think it was some ALT-code characters, or a tick, 0x33 or something....I realize PING can take octal, decimal, and hexadecimal values?
View 5 Replies View RelatedCisco WAN :: 7206vxr Acceptable CPU Level
Jan 18, 2012We have a 7206VXR with an NPE-G1 processor. We're running the standard stuff on it, but here are the highlights.We just enabled netflow on it to send the data to an external source for analysis and the overall CPU level increased, but not significantly. About what should we expect for the overall CPU level? At this point, it's averaging close to 40% during peak hours.
View 4 Replies View RelatedCisco VPN :: 876 Phase 2 SA Policy Not Acceptable
Oct 16, 2012I want to setup a vpn tunnel from a Cisco VPN Client in the internet over a fritzbox to the Cisco 876 (Version 15.1(4)M3) so that the vpn tunnel terminates at the Cisco 876.For that reason I used the command "crypto map mymap" on the int fastethernet 1. When I try to connect, the VPN Client opens the window for username and password but then ends with the message "not connected". When I do "debug crypto isakmp" the Cisco 876 shows the message: "phase 2 SA policy not acceptable!". [code]
View 3 Replies View RelatedCisco :: Can Set Exception To Acceptable Use Policy On 5508
May 7, 2013On our public wi-fi network we have an acceptable use policy page that users must accept in order to access the internet. However I would like to exclude a few devices from having to do this. We have a couple of Kindle devices from a vendor that they configured to automatically connect to the internet for updates twice a day. But they cannot accept the policy so they are blocked.
View 3 Replies View RelatedCisco Wireless :: 5508 Acceptable Signal Strength?
Feb 19, 2012I find myself having to venture out into the realm of wireless (I'm more of a UC/DC engineer...) and i've got a problem i'm trying to track down. Installed two WLC 5508s, WCS, 3502i APs (123 of them...) in a 4-floor high school. What i'm finding is lousy throughput from a lab of PCs with little USB b/g/n adapters. I took my Macbook in and ran iStumbler to get an idea of the SNR but honestly, i'm not sure what i'm looking for.
For the particular room/SSID/band that i was looking at, i found that in the 2.4 range, i was getting 53% signal strength and about 16% noise. Is that a good level? In WCS, i can see close to a dozen APs in relation to the AP in question, so i'm wondering if the SNR is too high..
Cisco Routers :: Acceptable Number Of Wireless Connections To WRVS4400N?
May 1, 2013What would be an acceptable number of wireless connections to a WRVS4400N router? I'm working in the IT department for a new company, and one of the offices complains that using VoIP and doing large file transfers are constantly a problem. They are all connecting wirelessly to the WRVS4400N. I managed to vpn in and connect to the web interface of the router, and it shows that there are 30 devices connected wirelessly to it. However, when people plug into the wall jack VoIP and data seem to work fine.I can't find any info on what a best practice would be for number of wireless connections to the router. There's no Vlans setup on it from what I can tell, so that may be my next step, to separate data and voice traffic.
View 2 Replies View RelatedCisco Wireless :: How To Determine What An Acceptable Throughput Rate Is For AP1241AG
Jun 17, 2012I have a client devices constantly sending data (~ 13 kb per second) to a server through a Cisco AP1241AG (802.11g).I use Iperf to test throughput, but I am having a difficult time determining what an acceptable throughput rate would be.I know in "theory" the best throughput rate I could get is 54 Mbps, but since my client devices only send 13 kbps is 1 Mbps more than enough? or is 13 kbps the low limit for my throughput test?
View 1 Replies View RelatedCisco Switching/Routing :: 1900 Acceptable Memory Leaks Quantity And CPU
Apr 24, 2013I am troubleshooting memory leaks and buffers issues on my 1900 and had some doubts regarding the problems that my router causes.Intermitently during the day for no reason the gig0/0 interface connected to ISP stops responding from our management network (log shows that the interface goes down). The ISPs modem responds fine from my management network.The issue goes away by itself in 20 minutes, sometimes more or after a hard reboot.Sometimes a router would increment a throttle value to 1. When running for 4 days without a reboot, the router raised 39 throttles and 57 input drops. [code] The router is running Version 15.1(2)T4 and I was not able to find any caveats on cisco web page (although I havent used the bug finder tool)Is this only leak I found a reason to start worrying or I can disregard it and continue basic troubleshooting (change cable and plug my ISP to another port)
View 3 Replies View RelatedWireless :: Set Router's Coverage To Minimum?
Jun 10, 2011belkin n wireless router minimum coverage ?
View 1 Replies View RelatedSetting A Cyber Cafe With Minimum Of 5 Pcs
Nov 28, 2011what are the things needed in setting a cyber cafe with minimum of 5pcs eg the most most profitable model, fast.
View 10 Replies View RelatedCisco :: LMS (4.1) Server Minimum Requirements
Jul 29, 2012in LMS (4.1) installing guide, table 'Software and Hardware Requirements for Soft Appliance', it is stated Memory and CPURequirement:
• 4 GB, 2 virtual CPU (< = 500 devices)Host CPU Core clock speed:
• Minimum 2.26 GHz Minimum Virtual CPU Reservations: Number of recommended virtual CPUs x 2.26 GHz:
• 4520 MHz (< = 500 devices)
I have HP server with 6 core CPU 2.0GHz - does it mean it does not meet the minimum system requirements (2.26Ghz)? Will I be able to go pass the installation?
Cisco WAN :: 2921 - Minimum Requirements For IOS Image?
Jul 5, 2011Got a question regarding 2921 modules. Can I use VWIC2-2MFT-T1/E1 along with NM-HDV2-2T1/E1 on 2921 and what is the minimum requirements for IOS image?
As I understand, NM-HDV2-2T1/E1 is supported on 2921, however VWIC2-2MFT-T1/E1 is not, VWIC-2MFT-T1/E1 only. But VWIC-2MFT-T1/E1 is not supported on 2921.
Cisco :: Minimum Software To Support WISM2 WCS 7.0.172.0
Feb 23, 2012I am confused about the cisco docs:What is the minimum WLC/WCS version to support WISM2 controllers ?
The datasheet of WISM2 says "minimum 7.0.116.0"
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However the release notes of 7.0.116.0 do not mention the WISM2 module ?
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The release notes of 7.0.220.0 do mention the WISM2:
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I need to be absolutely sure as there are other software dependencies between 7.0.116.0 and 7.0.220 (regarding required MSE and Aeroscout versions).
With WCS 7.0.172.0 and WLC 7.0.116.0, will we have WISM2 support ?
Cisco WAN :: Minimum Parameters To Configure T1 Between Two 1841?
Oct 16, 2011I configure two WIC-1DSU-T1-v2 interfaces with a T1 crossover cable. What are the mimimum configurations to do to communicate from LAN1 (int fa0/0 of one 1841 router) to LAN2 (int fa0/0 of the second 1841 router) ?
Do I need a routage protocole ? And if yes wich one ? Interne or externe (RIP or BGP) Or static route is enough ? Also, is that I should put a encapsulation, like ppp ? Is it neccessary on a point to point line ?
Finally what about the following commands, do I need it ?
service-module t1 clock source internal
service-module t1 timeslots 1-24 speed 64
service-module t1 framing esf
service-module t1 linecode b8zs
Cisco Switching/Routing :: Minimum UPS For Catalyst 3560G-48-Poe?
Oct 2, 2012We have 2 catalyst 3560g-48-PoE protected by a 1000Va 800Watt tripp-lite and I was cheking to see if that is really sufficient. Looking at the charts from Cisco suppport I would think I should have more, but have not had any issues with a few power outages
View 1 Replies View RelatedCisco VPN :: 861 - Minimum Platform That Supports GETVPN Over DMVPN
Aug 15, 2011What is the minimum platform that supports GETVPN over DMVPN?
I have been looking around cisco website but couldn't find a document with the supported platforms.
We have branch offices with Cisco 861 routers and i would like to know if we could use GETVPN with these routers.
Cisco Switching/Routing :: What Should Be Minimum IOS Version On WS-C6509-E
Sep 26, 2012what should it be the minimum IOS version that I require on my WS-C6509-E equipments to support "logging origin-id" command?
Cisco documentation says that this command was introduced in 12.2(15)T, and integrated into 12.2(33)SXH.
BUT my Cisco switches have 12.2(33)SXH5 IOS version......and they do not support "logging origin-id".
(config)#logging ? Hostname or A.B.C.D IP address of the logging host buffered Set buffered logging parameters buginf Enable buginf logging for debugging cns-events Set CNS Event logging level console Set console logging parameters count Count every log message and timestamp last occurance esm Set ESM filter restrictions event Global interface events exception Limit(code)
Minimum Distance To Be Maintained While Laying Power And Data Cable?
Oct 1, 2012What is the minimum distance to be maintained while laying Power cable ( light and fan power points) and Data cable?
View 1 Replies View RelatedCisco :: 4402 Access Point Configured In User Minimum
Mar 13, 2012need an access point configured in the user minimum because I was looking and some had up to 49 LAP connections at the same time. I have a WLC 4402 VERSION 7.0.98
View 1 Replies View RelatedCisco :: WCS 150.3.101.7 Does Not Meet Minimum Hardware Requirements For Disk Space
Apr 5, 2011I'm running WCS 7.0 on a WLSE appliance. Lately WCS has produced the following alarm:WCS 150.3.101.7 does not meet the minimum hardware requirements for disk space. Available: '29'GB. Minimum requirement: '30'GB. I have old WCS versions (3, 4, 5 and 6) so could delete those but I'm wary in case I take out the data too.
View 2 Replies View RelatedCisco Switching/Routing :: Minimum Code Version For N55-M16UP?
Apr 28, 2013give me a link to where I can find the minimum code version for N55-M16UP expansion card for a Nexus 5k?
View 1 Replies View RelatedCisco VPN :: ASA 5505 - Minimum Privilege To Local Account For AnyConnect
Oct 17, 2012 what is the minimun privilege level to assign at username account on ASA 5505 to grant the access with AnyConnect?
username ... privilege ?
Cisco Wireless :: AIR-CAP1552I - Minimum WISM Support Code?
Feb 15, 2012I am looking to install 2 1552I outdoor AP's. I can't find what the minimum code version is on the WISM controller that supports this AP.I am running 7.0.98.0 on the WISM. Where can I find this information?
View 4 Replies View RelatedCisco Switches :: Minimum Fiber Patch Cable Length For MGBSX1
Dec 14, 2011I want to "stack" a couple 300 series gigabit switches with fiber using a pair of MGBSX1 GBICs and a single LC to LC patch cable.Is there a minimum supported patch cable length in this configuration?
View 2 Replies View RelatedCisco Switching/Routing :: Minimum Power / Voltage Of Switch 3750
May 20, 2013I want to know how much minimum power required for swicth catalyst 3750.I want to know cause in my building place, the power in unstable so it make my switch corrupt/damage even i add power consistancy....
How much amount power to the ups and ups to switch?
Cisco WAN :: VS Based 720 Supervisor As Minimum To Support Full BGP On Catalyst 6509-E
Nov 18, 2011I'm currently in the process of evaluating potential equipment options for a Core Router/Switch that will be running BGP with several Tier 1 ISP's, the table download from each ISP will be full (300,000+ Routes). I was looking at a 6509-E with dual SUP720-3BXL supervisors but after reading the below link I'm a little concerned by the maximum routes table: [URL]
Do I have to go to the VS based 720 supervisor as a minimum to support full BGP on a 6509-E? Does any experience of the above switch + supervisor combination under a full BGP table, how well does it work? I'm looking at long term using this as a consolidated core (i.e. a VRF for the Global Internet routing table + a VRF for internal data center traffic, plus maybe some more shared VRF's).
Would I be better keeping a Core switch by itself and just buying edge routers to run BGP?
Cisco Routers :: RV042 Setup To Grant HTTP Traffic Minimum Bandwidth?
Jul 24, 2011I am trying to set up my router to grant http traffic a minimum bandwidth of - for example - 5,000 kBit (if there is any http traffic).
So I set http min. rate to 5,000 while I set nntp min. rate to 1 However, when I run nntp downloads on several connections (e.g. 10) my single http download never goes above 1,000 kBit. Without any other connections I reach 8,000 kBit.
I am using a single 12 MBit line.