I am connecting a cisco device with huawei device. The issue is when i ping with normal size packets (56 bytes) its ok. But when i increase the packet size above 1500 it doesnot works. MTU on both size is configured as 4096. I have also checked by varying MTU size, but still the same.
View 1 RepliesI have the Cisco 3560 switch. I can ping both from switch to server or from server to switch. However, I cannot ping with large size, for example,
ping 192.168.1.1 size 10000 (failed all).
I can ping 192.168.1.1 size 5000
(the size allow between <36-18024>)
It's normal or a problem with the cable or something else? Because I have the error about working with MSSQL server 2008 R2, the error is:
[DBNETLIB][Connection Write (send()).]General network error. Check your network documentation
OS: Microsoft Server 2008 R2 Standard
I have two branch offices connected with cisco routers(WAN link, leased line 2mbps). I am the NetAdmin for branch A. Sitting on branch A router or from systems behind the router, i can ping my branch B router or systems upto packet sizes of 1450bytes only. If i make packet size as 1500bytes, i cannot ping any of my systems in branch B and vice-versa.With packet size 1500 bytes, i can ping upto the serial interface of my branch A router. NetAdmin at brach B says they are no QoS configured which prevents ping at packet size of 1500 bytes. I don't have rights to access my brach B router and check the configuration. I am not able to pin point whether it is some configuration issue at my brach B router or ISP issue.
View 2 Replies View RelatedWe've had this firewall in place for years, and there haven't been changes to it in the past few months. Last week, however, we started having problems accessing one of our networks through the PIX, and after working with Microsoft, we determined it was an MTU issue. The maximum sized packet to the PIX and through the PIX is 1020 bytes, and it doesn't matter if the packets are sourced from a server or the PIX itself. From the server, we can ping 1500 byte packets to the core switch with no issues. All interfaces are set for 1500 byte.
View 1 Replies View RelatedI am attempting to FTP to a remote site through a IPSEC tunnel.When I am transfering large files the ASA5540 is showing syslog errors stating "connection timeout". What I think is happening is after about 1 hour the firewall is closing the connection control port for the FTP session and neither end is notified so eventually the transfer is stopped.What do I need to modify in the FW to accommodate these larger files?
View 1 Replies View RelatedI 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 RelatedWhen we install an HWIC-2FE card in slot 0 or slot 1 of a 3845, the interface fails to pass any ping packet greater in size than 449 bytes. It works fine up until that limit is reached, but then fails completely on a larger size packet. If we move to slot 3 or slot 4 on the 3845, the card works just fine! I have looked through the cisco official bug tracker for HWIC-2FE, but could not find a similar symptom listed. We're running advanced ip services 12.4(24)T7 code on the routers. Any software fix or if this is a platform problem with the 3800 series.
View 3 Replies View RelatedWe are testing a new 1Gbps WAN circuit between 2 sites. We have cisco 3750 and 4507 on each end. Every time we run extended ping sweep ranging from 36 to 18024 bytes the packets are being dropped randomly once the size goes above 1500 bytes. Our ISP claims Demark to Demark test are clean and they don't want to acknowledge the problem, they blame our switches. To prove the problem is not on our end we've put different switches at each end, still facing the same issue. Ping success rate is around 98 to 99 percent.
View 11 Replies View RelatedBasically a while ago last year some time in December my desktop got turned on one day and the internet wasn't working. I tried using my wireless to connect but even that was stuck on "acquiring network address". Ive played around with it abit since then and now my etherent cord shows up as connected but when I go into properties it says no packets getting sent / received. In device manager all my network adapters are cool and dont have any "!" next to them.Ive also tried the cord in my laptop and it works cool.
View 3 Replies View RelatedI have a switch that I have configured for jumbo packets, but they don't seem to be functioning. I have set system mtu jumbo 9000. The hosts are connected via 2x EtherChannel links. The hosts are jumbo frame enabled, and can ping their own local address using jumbo packets & do-not-fragment flags on the pings. They cannot, however, ping each other or the switch that way - it always says that the packet requires fragmentation. I know the attached machines (they're all VMs) and virtual switches support jumbos because I can ping within the virtual interfaces of the VMs. It's just traffic that goes over the switch that fragments.The switch is a WS-2960G-48TC. Here are the various outputs, with a section of config at the end.
hrnacancwtdevs3#show system mtu
System MTU size is 1500 bytes
System Jumbo MTU size is 9000 bytes
System Alternate MTU size is 1500 bytes
Routing MTU size is 1500 bytes
[code]....
I recently installed DHCP snooping on a 3750v2 switch (Version 12.2(55)SE4) and configured the uplink(Po2) as a trusted port. The problem is that clients cannot receive an IP address. When I disable DHCP snooping it is working properly. DHCP snooping is configured correctly but I don't have an idea how to resolve it. [code]I tested the solution on the same kind of hardware switch and firmware and it worked out fine. What is causing the clients not to receive an IP address from the DHCP server?
View 10 Replies View RelatedI have a DLink DIR-615 rev. B2 firmware 2.25. A few days ago, I started using Comodo Unite for VPN access with friends and LAN gaming. However, just recently the program stopped working correctly. I have reset my configuration, tried multiple different settings, and nothing at all has remotely worked.
View 3 Replies View RelatedI have the following LAN setup: I am trying to ping the Wireless Access point (10.60.1.1) from the Cisco Router (172.16.88.21) but I am not getting responces. I can however ping 10.60.1.1 from server (172.16.88.36). Tracert from the server shows that it is going through the Rotuer and Firewall.
View 8 Replies View Relatedi am having a very wierd problem with my current internet connection , Its wired and while accessing websites seems just fine .. Accessing ANY program on the PC that requires internet does not work .. Examples of those can be steam/origin/any messenger/skype/teamviewer/teamspeak and the list goes on.. They all act like i dont even have an internet connection. I tried pinging in CMD by using Ping Google and i always get a request timed out .. I have also tried tracert Google and after the three * * * Its always a request timed out as well.. I have no idea whats causing and its pretty annoying as i mainly use the internet for skype and steam, Also on a side not this is not a problem with my laptop as i tried connecting to some random unprotected network that was near me and it worked fine
View 5 Replies View RelatedI have two 7206 VXR routers with the VPN Service Adapter either side of a leased line (i.e. no provider between, pure layer two connectivity)A requirement is that traffic traversing the link is encrypted so I've configured an IPSec VPN between the two endpoints.During load testing we noticed a very severe performance hit when the VPN was enabled, disabling it again saw we were able to use almost 100% of the 1000Mbs line. The performance hit looks to be due to the increased MTU size when using IPSec, possible due to fragmentation.
I've read that the 7206 VXR can support 980Mbs (or there abouts) of throughput using AES providing the MTU size is 1400.Configuring this manually on each server in each data centre isn't feasible.As the link is effectively a point to point and we have control over the MTU size between the two routers, what options are available to increase the performance when the VPN is enabled?
I need to know the MTU size on my 1841 wireless connection.My router connects to the internet via a adsl connection wich is sed to MTU 1492.Internet works fine on wired ports. Although when i connect to my wireless SSID(bridged setup) i manually have to set up the MTU on my OSX machine in order for my connection to behave properly. When set to automatic i have serious fragmentation issues. Is there a way to set the MTU size for my wireless module connections in order for MTU to be 1492 or lower in order for my mac to get the settings automatically? [code]
View 4 Replies View RelatedI have a 4402 being used as a dmz anchor and we use WCS to allow our Helpdesk to create lobby ambassador accounts. Recently they have been getting error messages when attempting to create accounts. I am seeing the database maxxed out at 2048. The docs state database entries are made up of mac filters(don't use)..ap mic/ssc(don't use)..Dynamic interfaces(minimal) management users(2) local netusers (100 approx)..and excluded clients(none). So the numbers don't add up.I am on 4.2.61.0 code.. I will say also that WCS shows alot more netuser accounts than my anchor does but no where the numbers to max out the database. Is there some other criteria that hits against the datasbase number?? And what can I do on the WCS to insure it si synch'd up against the dmz anchor other than a audit..
View 3 Replies View RelatedI was asked to performe upgrade from acs 5.3 to 5.4 (vm), but i noticed that someone installed it on 80gb partition and there is 500gb as one of the requriments in upgrade and install procedure. What is strange to me is that "dir disk:" command shows such an output: 5165345067 bytes available.And under ESX i see 80gb partition. Anyway, is there any way to extend partition size to 500gb? Can I just change it under ESX? Is there any procedure to take under ACS console?
View 1 Replies View RelatedThis is a bit of an odd question because it's about a problem I ran into a year or so ago, but I wasn't aware of these forums at the time, so I thought I'd run it past you all. Unfortunately that means I can't reproduce the problem right now, so it's kind of a theoretical question.
A while ago I tried to deploy an sg300-28 in L3 mode as the "core" switch in our ~70-person office, with static routes across 5 vlans. There were probably around 250 devices on the network in total when you include phones, virtual machines, mobile devices, and so on. Over the deployment weekend things worked fantastic; when everyone came in on Monday, network performance was terribly slow.
So my theory at the time was that the switch's (L3) arp cache was full -- if I pinged a host on another vlan, the switch would send a new ARP request every second ping. We scrambled a Linux box to act as a router and disabled the L3 functionality on the switch, and it's been fine since. However, in the months since then, we've observed some STP misconfigurations, which leads me to wonder if it wasn't an ARP table size issue, but rather a topology issue. But moving routing to a different box did solve the problem immediately.
The switch has been fine as our core switch. The MAC table on that switch right now has 358 entries (we've grown since this happened). It was just on level 3 that it wasn't keeping up.
Does this ring a bell? How many arp table entries can an sg300-28 retain?
How many Ap's I can have in a 541N Cluster? I have heard 6 or 10.
View 2 Replies View RelatedWe have lms 3.2 that we are facing a problem with it. When we start the server the EDS-GCF log file size start to increasing rapidly until it consumes up all free space and it only stops when we stop the Daemon Manager service. I tried to do the pds how command but I get no output from it. I included the portion of the EDS and EDS-GCF log files. i searched and didn't find the cause of this error.
View 3 Replies View Relatedi have LMS 4.2 in Network with 100 devices, all of my devices have ACL so, there are too many logs in syslog
after a while the size of the log files in /var/log files (boot.log, messages.log) going to have huge size, something about 20G for each one
I'm looking for a way to reduce the size, is it possible to use Log Rotation or not?
I have a Problem with an an ACE4710 Setup. Between my 2 Ace's there are Switches which don't Support Jumbo Frames - Is there a way to configure the Interface on the ACE to an Standard MTU Sive (15xx) ,I'm using SW-Version A3(2.7).
View 2 Replies View RelatedI've created a Tunnel between a Cisco 2811 router and a Switch 6509, the tunnel works fine. However, I would like to run Multicast down this tunnel to avoid using a non-supported 3rd party network device that doesn't support multicast. Some of the multicast packets are above 1500 bytes. I would like figure out why the 6509 tunnel does not support frame sizes over 1500 bytes and the 2811 router does. I have applied ip mtu 1576 but this does not really come into play as the packets are UDP. problems seen below:
See the difference with MTU sh int tunnel1 - why is this
Switch config (s72033_rp-IPSERVICESK9-M), Version 12.2(18)SXF13)
interface Tunnel1
ip address 10.210.183.14 255.255.255.252
ip mtu 1576
[Code]....
What is the size of the routing table in the 800 series?
View 1 Replies View RelatedI am currently trying to upgrade a 2800 series router to the latest IOS. I have loads of space on the router but the issue seems to be that Pumkin can't handle the size of the file. Keeps failing and saying that I might want to increase my block size. I increased it to the maximum size but still didn't work.
View 5 Replies View RelatedI have VLAN X with MTU 9216 on Switch-A. I also have VLAN Y with MTU 9216 on Switch-B. But not their SVIs are MTU 9216.They are not communicating to each other on packet size of above 1500. This is because SVI VLAN X and SVI VLAN Y connect to each other through SVI VLAN Z (Point-to-point Layer-3 connection between two switches). Although SVI VLAN X and SVI VLAN Y communicate through SVI VLAN Z, this inter-link port is a trunk port carrying other VLANs but VLAN Z is a native vlan for which SVI VLAN Z is defined.In order to make it work.
1. Do I need to change SVI VLAN X and SVI VLAN Y to 9216?
2. Change MTU for VLAN Z and SVI VLAN Z to 9216?
3. DO I need to change MTU sizes for other VLANs that are on TRUNK port?
I am low on available disk space to perform backups on my LMS 4.2 installation. Is there a way to force the appliance to recognize the increased disk space allocated by ESX VMware?
View 2 Replies View Related imagine IOS image required size lists:DRAM 256 / 64 Flash
Then show ver on my router 3825 lists the below. Technically speaking the below should have the 64M flash required right? Why again it shows as 62592K and not 64000K?
I'm having a problem with a context, I have two CISCO ASA 5550 (failover) and also we have the CISCO CSM to monitoring it, but since some weeks is showing a memory usage of 100% but then it drops until reach zero and then again the graphic goes up. This is the second time that the graphic shows this
I also check this on the CLI and i'ts fine because is showing the real percent, so my question here is why is showing this kind of behavior, I mean it was working fine before.
In the other hand I checked the secondary device and this is showing a 99% of used memory, but as the other one this graphic doesn't drop
I also checked via CLI and it says that it had the 99% memory used , Is there a way that i can put more memory on the context or what do you suggest that I can check on my firewalls.
From one day to the next our UPM database (upm.db) has blown up from 4 Gb to 35 Gb.Data purging didn't reduce the size of the db.What happened ? And how can I compact the db again ?
View 4 Replies View RelatedWe have a site where uses are unable to login to an application. After running a packet trace on the traffic coming from the site to the server they are trying to access, the trace indentifies that the client pc is sending a window size of zero to the server, and it does this twice. So in essence the client is saying it is too busy. This is strange as all the other applications work for the users and it is only this one application that is experiencing issues. The only other issue is that there is some retransmitted traffic before the client sends window size.
View 2 Replies View RelatedI think that our users are at the largest capacity for attachments, twice in the past week one of our users did not received important emails because of the attachment size limit. The problem is that the sender thinks we got it b/c there is no bounce back and we have no record of the email being sent. my question is how do i increase the attatchment size for incoming emails?
View 4 Replies View Related