whether MTU sweep is possible in Brocade 7420B. This is used in Data Center and Sys Admins are refusing it . I wish to check path MTU between these two devices (including these devices) separated by transmission media (I own this). OR any other method to check path MTU in Brocade . I have allowed jumbo frames in all my DXCs.
View 1 RepliesI am trying to test the MTU between two 3750 switches I have in the lab. I've set the MTU with the command "system mtu 9000" on both switches and rebooted.
The only connections on the switches are the gig ports connecting the two switches. Each interface is a member of vlan 1.
I am doing an extended ping. I set the datagram size to 2000. When the df bit is set the ping doesn't go through. If the DF bit is not set the ping goes through.
The debug ip icmp shows, 4d00h: ICMP: dst (1.1.1.1): frag. needed and DF set.
Why is fragmentation needed when the MTU is set to 9000?
GigabitEthernet1/0/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 0015.2b7d.0d01 (bia 0015.2b7d.0d01)
MTU 9000 bytes, BW 1000000 Kbit, DLY 10 usec,
[Code].....
Let's say I have a Brocade switch, and a Cisco switch, and I've formed a VLAN trunk between the two.On the Cisco switch, I configure the trunk to utilize VLAN 3 for its native VLAN.On the Brocade switch, I utilized the command 'default-vlan-id 2'. I have configured the port going to the Cisco switch in dual mode.From my understanding, when a port is placed in dual mode, it sends frames that are untagged as the default vlan. Does this cause a native VLAN mismatch?
View 19 Replies View RelatedAt the moment our whole company is equipped with Catalyst switches ranging from 2950, 2960 to some 3560G and 3750X (Cores). Now I'm thinking of replacing some of the old 2950s (which are only fast ethernet) with some Brocade 6430 or 6450s, since they're so much less in pricing.My concerns though are: will spanning tree work problem free, access lists still work and any other problems I could encounter with interoperability.According to Brocade most of these things should work fine, but I'm searching for some facts from people who are running a heterogenic Network with these two brands (even the same product lines).
View 4 Replies View RelatedI am installing a connection between Brocade MLX and Cisco 4503 using SE and SVI's. Below is the config for each. Am I missing anything like MTU Ignore or something along that nature?
*** Cisco 4503 (v15.01) Config ***
VLAN 35
name EOC_Gi1/2
[Code].....
I have a sony bravia tv that has wifi and supports dlna. And I have a desktop in another room, running windows xp. Since they both connected to the same network, is it possible to use the tv as another screen for the pc?( duplicate the screen, whatever i do on the pc will be shown on the tv screen) I'm installing a software that might stream content from the pc to the tv, but then i'm not hoping too much on it because the tv seems to be very picky about fCPUile formats... so i figured somehow duplicating the screen would be best if all else fails i'll just hook up the CPU to the TV.
View 1 Replies View RelatedI apply extended ACL on my router cisco 1941, but it didn't work. So I tried to apply standard ACL, it's work. I'm not sure about my cisco 1941 IOS is support extended ACL. My cisco IOS is
Cisco CISCO1941/K9
c1900-universalk9-mz.SPA.151-4.M1.bin
-----------------------------------------------------------------
Technology Technology-package Technology-package
Current Type Next reboot
------------------------------------------------------------------
ipbase ipbasek9 Permanent ipbasek9
security None None None
data None None None
[code].....
Is it IOS bug or limit feature on hardware.
I have a BT broadband connection with one of their BT Home Hub 2 routers. Within the house the wireless signal is fine, however I have an outside office in the garden which is just beyond the normal range of the wireless signal. I tested this by connecting using my DELL XPS Win7 laptop and walking from the house to the office and it lost the signal about 10 feet short!
Is there any way to extend the range of the wireless signal? I cannot use homeplugs as the office is on a different fuse box from the house.
The BT Home Hub 2 is an ADSL router using n technology.
I do have a spare Netgear N150 ADSL2+ wireless router, is there any way of using it to boost the range of the signal?
I have received a router from my isp and ive connected that router to my dlink 615 the computer connects to tIhat network but theres "no internet access" and sometimes its taking longer than usual also its showing 2 signals (1 from my og router and the other from the dlink router), also i cannot use my dlink router as the main router cause my phone line is connected to my isps router
View 19 Replies View RelatedIs it possible to use a DNS entry in an extended ACL instead of an IP address range?
View 2 Replies View RelatedI have a N750Db router along with a Dual-band wireless range extender. It works great, but it created two new networks with "_xt" at the end of the SSID to denote the extended networks. This means I have to disconnect/reconnect to the base/extended networks as I move around my house. If I were to rename the extended networks to have the same SSID as the base networks, would that allow me to walk around my place without having to connect to the extended network, or will it create some sort of conflict or error?
View 3 Replies View RelatedI've got a 7200 vxr that I'm trying to create a named extended access-list in.
I got to configure it if I go into ip after that the only commands available for access-list are log-update, logging, and re sequence.
so if I go back to the main config menu access-list is an available command
but then from the main config menu, if I type: access-list extended eth0_in it says invalid input detected at the carrot marker which is under the first character of the work extended.
also, at the main config menu, if I type: ip access-list extended eth0_in it again give me the invalid input detected at the word extended.
I don't understand what I am missing to get this to work.
I tried to extend the Range of the Guest WLAN of the E2000 with several different Access Points vom TP-Link. (Last try: TL-WA901D) The Access Point recognises the WLAN and sometimes it has a connection for a short time. But then the whole WLAN is breaking down, sometimes the Router E200 hangs up, also with the LAN connections. The E200 is connected to a sky-DSL Router and works fine when no additional access point is connected. In the web-Interface of the E2000 I cant setup any specific Guest-WLAN settings.
View 1 Replies View RelatedI have an access-list that was named "extended" (without quotation marks) and the ASA will not let me remove it.
I have tried everything I know to try and get it out, but I cannot remove a single line.
ASA(config)# no access-list extended line 1 extended permit ip host 10.1.1.1 host 192.168.1.1ERROR:<1> not a valid permission
ASA(config)# no access-list extended line 1 permit ip host 10.1.1.1 host 192.168.1.1ERROR:<1> not a valid permission
I have created Different extended access-list which allow/block some specific services like IP,TCP,UDP ,ICMP etc for certain source and destination . But now I have to allow/Block all/any type of services to a certain host from a extended access-list . How can I do it ?
View 4 Replies View RelatedI'm trying to configure an extended access list on one AS5350XM but I get one way hearing on a voice calls and I can't determine why (please see the attached diagram). There is an OSPF running on both gigabit interfaces and the Loopback address is also advertised (it is actually the voip IP address). The access list is applied on both interfaces in the inbound direction. There is another gateway with IP:4.4.4.4 (no firewalls here) and the routing between gateways is working properly.
Here is part of the access list (applied on AS5350):
.
.
permit ip host 4.4.4.4 host 3.3.3.3
.
.
When I review the log of the AS5350xm I see many errors like this one:
%SEC-6-IPACCESSLOGP: list example denied udp 3.3.3.3(16638) -> 4.4.4.4(18094), 1 packet
So how it is possible to see this error since the access list is in inbound direction and the IP address (4.4.4.4) is open. I don't have problems when I do telnet or ssh from 3.3.3.3 to 4.4.4.4.
I'm trying to add an access-list rule to allow internal servers to connect an outside host on a asa 5540. The hostname translates to multiple ip's. Normally I just lookup the ip address or one of the ip's the hostname translates too and use that in the access-list as the host. For some reason the actual ip's, which are a few, are not always available so using a specific ip sometimes does not work, thus the reason I have to use the hostname instead of the ip. I have 2 hostnames. www.hostname.com and subdomain.hostname.com.
This is how I normally add these rules (the ip addresses are fictive): access-list internet_access extended permit tcp host 192.168.50.5 host 84.115.57.121 eq www log
When I try to add this using the hostname on our asa I get an error: access-list internet_access extended permit tcp host 192.168.50.5 host www.hostname.com ?ERROR: % Unrecognized command
I've tried it without the 'www', so hostname.com but same error.
I was wondering why can't we no longer use the multiple ports within an extented ACL like I use to do it in a CAT3750E.I have IOS-XE Software, Catalyst 4500 L3 Switch Software (cat4500e-UNIVERSALK9-M), Version 03.02.00.SG.I wanted to create an ACL like so [code] But when I do, it tells me that I cannot do it.... I can only add 1 tcp port to my ACL line. I tried to search the "object-group" concept also but it's not implemented in this IOS.Can this be done in IOS-XE ?I'm migrating my enviroment from a CAT3750E stack to a C4510-E.
View 1 Replies View RelatedWe have a 3560 switch running IOS universalk9-mz.150-1.SE3.bin.Recently, we saw two problems with this switch:-
1. if we try to enable subinterface on any routed interface , for eg. gig1/1, it says invalid input detected. It doesnt accept encapsulation command also. Following was done to enable subinterface:
int gig1/1
no ip address
int gig1/1.2000
ip address 1.1.1.1
under the gi1/1.2000 subinterface, it doesnt present the option of ip address.
2. we created a layer 2 vlan 2000 like: vlan 2000 When we do an exit after creating this vlan , it gives following error:-
%SW_VLAN-4-VLAN_CREATE_FAIL: Failed to create VLANs 2000: extended VLAN(s) not allowed in current VTP mode
We faced with problem after upgrade ASR from 12(2) 33 XNE2. I know that this is an old XE release but our Radius deny authization from ASR with more new XE version. Here is our radius attribute configuretion:
!
radius-server attribute 44 include-in-access-req
radius-server attribute nas-port format d
radius-server host x.x.x.x auth-port 1812 acct-port 1813 non-standard
[Code]....
How can I add in my configuration that ASR send necesserry NAS-Port-Type - VPDN
I couldn't found out any info ((( for radius-server attribute 61 extended
We have a gateway on a 4503, say on port 2/1, and we only want the other devices that are plugged into the 4503 to be able to talk to the gateway and thats it. The other devices are Motorola TUT DSL devices and they plug into the 4503 directly.
Normally "switchport protected" would make this very easy to keep stuff on one port from talking to other ports but with 4500's you are not able to do that command. So we implemented a MAC Access-List Extended ACL. Here is what we did
mac access-list extended BLAH
permit #host 0000.XXXX.YYYY any
interface range fa 2/5 - 20
mac access-group BLAH out
The MAC address 0000.XXXX.YYYY is the MAC address of the gateway that is plugged into Fa2/1 and the DSL TUT devices are plugged into ports Fa2/5-20. We would think that this config would only allow devices on the TUT DSL to talk only to the Gateway but we don't really think this is happening. The TUT devices are learning about MAC addresses that are on other TUT devices.
I am trying to write an extended ACL for the voice vlan.My scenario is the following:I have two PBXs with two Catalyst 4505 L3 switches.The C4505 are connected trough a trunk link.I have a VTP domain configured.
Voice VLANs are Vlan 100 and Vlan 101 with networks 10.2.0.0/16 and 10.4.0.0/16 Voip telephones are communicating between them self and everything is working fine.I want to secure both voice VLANs with an ACL to allow only couple of IPs to administer the phones.The PCs are connected trough a integrated switch via VOIP telephone.Here is the sample configuration of the dhcp pool for the PC VLAN:
ip dhcp pool PCs
network 10.1.0.0 255.255.0.0
default-router 10.1.1.1
dns-server 10.10.10.1
option 43 hex 010a.5369.656d.656e.7300.0000.0204.0000.0064.0000.0000.00ff
I had to implement the 43 hex option because the PCs did not get the ip from the DHCP because of the vendor specific information.The thing that worries me is will the DHCP forward the ACKs for the PCs if I implement this test ACL:
ip access-list extended VLAN100
permit ip 10.2.0.0 0.0.255.255 10.4.0.0 0.0.255.255
permit ip 10.4.0.0 0.0.255.255 10.2.0.0 0.0.255.255
permit ip 192.168.2.0 0.0.0.255 10.2.0.0 0.0.255.255
permit ip 192.168.2.0 0.0.0.255 10.4.0.0 0.0.255.255
permit udp host 0.0.0.0 eq bootpc host 255.255.255.255 eq bootps (this I am not sure do I need)
permit udp host 255.255.255.255 eq bootps host 0.0.0.0 eq bootpc (also this)
deny ip any any
I only want to allow the network 192.168.2.0/24 and maybe some other hosts to access the web based http gui to adiminister the IP phones.All PCs are connected trough the VOIP terminals. I do not want to deny the traffic to PCs.
I have a new 3560G to set up a small network for a remote site. I configured the vlan and an SVI as the gateway. The switch is also the DHCP server for the LAN. I configured Gi0/2 as L3 port, connecting to the nearest neighbor. My network runs EIGRP so i advertised the routes into the EIGRP process. The switch forms EIGRP neighbors and learns all routes in the enterprise network. The problems I'm having now are: 1. The switch learns all routes in my enterprise LAN and can ping devices in the enterprise LAN, but I can’t ping any interface on the switch from the enterprise LAN. 2.
View 5 Replies View RelatedI set this up and I can ping all the gateways but never the hosts. I was hoping I could make these links between 6500's a mix of L2 and L3. Check it out. They are connected in a linear fashion R1--->R2--->R3. I can ping from R1 to R3's SVI4 gateway but I can never ping a host on that SVI4. I was hoping that I could use the port-channels between 6500's as routed links or as trunk links depending on the type of traffic....thought it would ease the migration. I suppose I could always get rid of the port-channels and just make separate L2 and L3 links between the 6500's.
View 3 Replies View RelatedFrom My Router that connects to Cable modem i am unable to ping website 4.2.2.2I am able to ping all other websites fines.Same website i can ping from my pc and all other switches fine.Router has only 1 ACL thats for NAT.
View 25 Replies View RelatedWhen I ping an address from my windows machine, it succeeds, but when I ping to the same IP on my MAC OS X machine, it fails.
1. Why?
2. How to get successful ping on my MAC machine?
I installed window server 2003 in a old Pentium III server as a standalone test server. Now I want to use it as a print server and connected it to the domain. I can ping workstations and other servers from that test svr. But i cannot ping that test server from the work stations.
View 2 Replies View RelatedI had both a Westell 7500 and a Linksys Router working fine and had my 360 setup as an extender for Windows Media Center so I could stream TV, Music, Movies, etc from my desktop to the 360. Then I switched my modem/router out with a Zyxel PH5001Z
So now today I noticed that I can no longer find my desktop through the XBox. I have adjusted my firewall settings on the modem itself, even completely disabling it. UPnP is enabled for the 360 and the device is showing under my device table. At first I wasn't able to ping any network devices but after creating an ICMPv4 Firewall rule it worked fine. I've confirmed the XBox IP Address through Network Map, the Device Table on the modem and through Network Settings on the XBox. I've diabled my modem firewall as well as Windows Firewall, completely and I still can't ping my XBox or set it up as an Extender.
I have the XBox connected wirelessly using WPA2-Personal and it's operating in 802.11g/n mode.
I have a strange issue on my ASA 5510 (8.4). I can't ping or connect to the VPN clients but the VPN clients can ping/connect to any inside resources. I have checked all the NAT extemtion entries.
View 3 Replies View RelatedBeen racking my brains out for hours now, my remote access VPN via Cisco VPN Client is UP i can ping the RA VPN DG but cant get no further than that relevant config below i can ping 192.168.250.1 and it replies with the public ip address, but i cant ping any 192.168.101.* addresses.
View 1 Replies View RelatedIm having some Ping / MS issues lately. My ping bounce up and down from 30 to 600 in just some seconds, and its really unstable. Im using the same internet as my neightbour ( internet cable through the wall) Is there any1 who can give me some tips so I don't need to worry about my ping anymore?,I don't know much about he's internet though.
View 3 Replies View RelatedI Have 15 computer and they all are in Internet Connection.And I Have Network of C class that is 192.168.5.11.But the main Problem is that the computer are not getting ping with each other.How can I get them Pinging between them.Can any antivirus stop them?
View 1 Replies View RelatedI have Windows 7 x64 on my desktop, laptop, and HTPC. The past few months, everything worked fine. Today, I can ping my IP address but I cannot ping the host name on all 3.They also do not show anything in the network window, just the computer that I'm on.
View 1 Replies View Related