Do you know why there are two MAC addresses in iPad's interface table? Only the first digit is changed from a 4 to a 6. MAC address sites recognize one and not the other. I am trying to figure out if I have been networked into a neighbor's security/surveillance system and thus mapping out what is linking to what. I am using IT tools app as well as searching many websites.
View 2 RepliesIn setup for old RV042 (V1), when updating / adding Mac addresses, the table is always sorted by IP addresses. But in the new oneRV042 (V3) I have, even with latest firmware 4.2.1.02 the list is random, thereby increasing the chance of user entering DUPLICATE IP addr with diff Mac addr. That will result in conflict.If the firmware sorts the DHCP entries by ip addresses, user would be able to catch duplicate ip errors even if the system does not flag the errors. All Cisco smart engineers can you all get the dhcp entries SORT by ip addresses.
View 2 Replies View RelatedWe have an issue in which some of our public IPs will not work from outside. We have a couple of subnets/29. We allow traffic via access rules and they point to internal servers (nat to nat). So I requested an ARP table from our ISP router. The table shows that the non working IPs have a differect MAC address than the working IPs. Our ISP blames our equipment (CIsco ASA 5510) for this. I spoke to Cisco support. They looked at our configuration, and tested it. They say our configuration is correct and the ISP's equipment is doing it.
IPSMAC address*.*.*.5*.*.4cd8*.*.*.4*.*.4cd8*.*.*.3*.*.4cd8*.*.*.2.*.*.4cd8*.*.*.204*.*.4cd8*.*.*.205*.*.4cd9
As you can see above, the IP ending in 205 has a different MAC address ending in 4cd9. It should end in 4cd8. This seems to happened randomly with all IPs. Like if I restart the ASA. Some of the IPs will not work, and will show a different MAC address.We then have to wait a couple of hrs for them to start work again.
we have a 3750 and use dhcp services on the switch. every so often we run out of ip's even though we have much less users than the size of the allocated dhcp pool. I've noticed that the dhcp bind table is full but a ping-sweep only shows very few ip's being assinged and used. It looks like the IP addresses are not being released from the table even though I have decreased the lease time to 8 hours.
View 2 Replies View RelatedI'd like to add a name to a few ip addresses in the DHCP client table currently there is an asterix for a couple client names. the router is an ea3500.
View 2 Replies View RelatedWe have Cisco ASA 5505 box.We have a /29 subnet available.At this moment one of IP addresses in this rage is assigned to VLAN2 used for outside interface all outgoing traffic from VLAN10 (for employees) will go out using one IP, xxx.xxx.xxx.1all outgoing traffic from VLAN20 (for visitors) will go out using second IP, xxx.xxx.xxx.2all outgoing traffic from VLAN10 host yyy.yyy.yyy.yyy (mail server, webmail, ...) will go out using third IP, xxx.xxx.xxx.3all specified incomming traffic to xxx.xxx.xxx.3 will be NATted to internal host yyy.yyy.yyy.yyy in VLAN10 .The main purpose is to have specific public IP address for mail server only not to get to any black list,and to give visitors different outgoing IP address than for our internal users.
View 3 Replies View RelatedHow do i tell my firewall to start listen also on another outside ipadress assigned by my ISP? I have it used on other firewall right now. So my steps would be shutting down ip address assignment off old firewall interface. Assign that ip address to ASA5510 outside interface and configure NAT.
View 13 Replies View RelatedIn datasheet of WS-SUP720-3B - link- was said that are only supported around 256K routes (fib?rib?).With this value I can't get 2 full bgp - that is around 850K ..
The supervisor is that control this or just memory ? I said this because I have a 7204-npe-g1 whith 2 fullrouting and 1G of and he are ok..
I have verizon fios business line with 5 static IP addresses and am configured for ethernet wan. I can use EA6500 as the router instead of using Verizon's own router, however I can't figure out how to assign all 5 static IP addresses on internet interface. I have already assigned first IP to internet interface but don't see a way to add more IPs either in internet interface or from NAT section where I can create static NAT.
Is this even possible with EA6500? If so, how?
Haveing issue with DHCP server handing out IP addresses to client connected to VLAN5 interface.ISP Router>Firewall -(WatchGuard Drop-in mode) I have several 3750 switches and one acting as a L3 switch. The L3 is configured as follow: [code]
If I connect a laptop to int fa1/0/10 I DO NOT get an IP address from the 10.100.0.8 scope. If I connect to another interface within the VLAN 1, I get an address from the 10.100.0.0 range.
I have this routing table which I need to fill in for the network shown in the image attached. guide me to some good resources to understand
View 1 Replies View RelatedCan someone throw me a bone on what might be occurring here?
View 7 Replies View RelatedWe have a BGP / OSPF configuration as shown in the topology picture. When the connection towards Internet is taken down, we expect the traffic to be forwarded toward WAN 2 (preferred) or WAN 1. The problem is that the BGP learned routes disappears when the Internet connection is taken down. The IP routing table on R2 only shows internal networks and the networks between R2 and WAN 1 and 2. No routes to internet is shown. We run "show ip bgp neighbors <ip-to-wan-1-router> received-routes" it contain internet routes. And when we run "show ip bgp neighbors <ip-to-wan-1-router> routes" it contains no routes at all.
View 2 Replies View RelatedTrying to get a Cisco ASA 5505 to show me all the current dynamic PAT. (I don't want to see hard-coded port forwarding, just dynamic stuff the router is doing to allow various hosts on the network to talk to the WAN.)
View 8 Replies View RelatedWhich data structure used to preparation of a routing table.
View 6 Replies View RelatedI'm having problems with a linux box we're using as a VPN/IPtables firewall. The setup is such that we're sitting this thing behind a basic Comcast cable modem will all the pass through options set. The outside facing interface is set to DHCP and grabs an IP address from Comcast. Inside interface is statically set with the same being said for the CIPE interface. The inside interface works until we plug up the outside. When we plug up the outside interface, all network traffic to the box effectively shuts down and the /var/log/messages is flooded with "neighbor table overflow" messages. Sometimes, this takes a few seconds to appear, and when that happens I can track some traffic hitting the far side of the tunnel, I.E. it works for a few fleeting seconds.
View 6 Replies View RelatedI am currently using 2 routers. One is a 2wire router with stock firmware it is connecting to the internet and can't be altered all too much, it also has a PC connected to it. The other is a WRT54GL with Tomato on it with pretty much EVERY other PC and device connected to it, it is also connected to the 2wire and DMZ'd through it.What I want to do is somehow allow everything on the Tomato router to have access to the 2wire router's PC. (For media access or printers or whatever on Windows 7)
View 13 Replies View RelatedI JUST got this router. For the longest time, I have been using the DGL-4100 ( Rock solid for years ). One of the things I noticed in the description of the 4100, is the "oversized NAT table" .. Better for torrents?
So, upon using the 655, after a solid day of heavy torrenting, I had to reboot it. Next day same thing. 3rd day, no torrents. It was fine for the entire day.
Are there any tricks to get this 655 to be solid for torrenting like my old 4100? If not, what wireless product does D-Link make now that can support many concurrent connections without having a heart attack? I could have 20 torrents open at once with the 4100 and it would not die!
Any good link to find how to configure MAB table on acs 5.3? I cannot find one by myself. If it is possible a guide with picture in it.
View 7 Replies View RelatedWhen we configure a SG 300-10 switch in layer 3 mode to do so some static routing, I would like to know the ARP table limit (association between IP address and MAC address) ? The documention talks about MAC (association between MAC and port) table limit, routing entries limit ... what about ARP limit ?
View 1 Replies View RelatedMy comany is planning get full bgp table from our providers we have mutliple egress providers in order to load balance we are looking for a full table from all of them what would be minumu requiremts we have all edges as 6500 with sup 720 ,is there any memory requrements that need to be upgraded ??
View 4 Replies View RelatedWhere can the following information be found?
1. CEF table capacity (maximum)
2. Route table capacity (maximum)
I can issue "show ip cef sum", "show ip route sum" to see the current usage.
I've inherited a project building an internet connectivity solution for a large corporate. It has its own AS and its own PI space. They are putting in 100Mbit connections from 5 different Tier1's , taking full internet routing from each. Cisco ASR1002's have already been specified and purchased for the job. I'm not familiar with the ASR platform at all - is it up to the job with full routing tables? multiple instances of full tables ? (not likely to put all 5 into one box!)
View 2 Replies View RelatedThe problem is the memory available in common BGP-routers. A sup720-3BXL for example, a widly used sup-engine for handling BGP as far as I know, is getting to the limit of its memory size, depending on the number of upstream-providers connected to it.What are you doing, what are major ISPs doing, to circumvent this problem? setting up some server, working as route-reflector, and with a high level of summarizing routes, above supernetting? But at the cost of stability? Or buying new hardware, supporting bigger table? For example the RSP720-3CXL-10GE with up to 4GB memory? But how long will it last? Or a ASR-9001 with 8GB memory or even the ASR9k6 + RSP440 with 12GB mem?
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How can you remove these "L" routes in routing table?
I have an RV082 10/100 8-Port VPN Router and have configured the NAT table to allow for remote users, however I've run into an issue. It seems like there is a limited number of entries that you can put in the table,10, and I need to configure about 5 more IPs. Any way to expand the NAT table, or alternatively recommend a different router. I would also be willing to add another router to the network, but I have little experience doing that.
View 3 Replies View RelatedI am looking how to see the mac table on a Nexus 5000 switch running NX-OS and confirm the mac address on a certain port. Similar to the Sh mac-address-table in IOS and sh cam in Cat-os.
I am sure this is simple I just cannot find the command.
how I can get to the DHCP client table on a Cisco 891 Router ? We just upgraded our router from a WRVS4400N to the Cisco 891. THe WRVS4400N has the feature DHCP client table that I can see the Client host Name and IP address,Mac Address I have CCP and CCP express installed on my system?
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?
What are the rough figures that a NPE-G2 is able to hold for the BGP routing table?
378475 network entries using 51472600 bytes of memory 378482 path entries using 21194992 bytes of memory 63008/63003 BGP path/bestpath attribute entries using 8065024 bytes of memory BGP using 82975730 total bytes of memory
Are these 3 memories different memory allocated or are they are a sub-set of each other? If a NPE-G2 has 1GB RAM, does it mean that the routing table limit is depending on the RAM availability?
trying to fetch the equivalent of the mac-address-table on a 1811 with SNMP. I want a mapping between active MACs to a port ifIndex (not a VLAN interface ifIndex).
- I've snmpwalked every MIBs on this device (including all the proprietary MIBs supported by the IOS)
- I've upgraded to latest IOS from the 12.4(24)T series and also tried latest from 12.4(15)T series
- I am aware of the community index (@ sign in read-only community to split per vlan)
- I've exhausted all my google skills
On 29xx, 35xx, we obtain that information using the BRIDGE-MIB, community indexing and the following OID:
1.3.6.1.2.1.17.4.3.1.2 (dot1dTpFdbPort)
ex:
# snmpwalk -v 2c -c public@1 192.168.1.61 1.3.6.1.2.1.17.4.3.1.2
SNMPv2-SMI::mib-2.17.4.3.1.2.0.23.89.208.164.62 = INTEGER: 24
SNMPv2-SMI::mib-2.17.4.3.1.2.0.23.101.255.67.177 = INTEGER: 12
SNMPv2-SMI::mib-2.17.4.3.1.2.0.24.25.113.78.52 = INTEGER: 11
We have a couple of 6500 series switches and have 3 BGP peerings to each. The 6500 series switches are loaded with WS-SUP720-3B Supervisor Engine. I believe there is a limit to the number of IPv4 routes WS-SUP720-3B supports(256,000). We also have "soft-reconfiguration inbound" configured on the BGP peerings. Thus when I do a "show ip bgp A.B.C.D" it displays three routes from 3 BGP peers and it displays an additional 3 "received-only routes" which I think is due to the "soft-reconfiguration inbound" configuration. We currently filter inbound routes from the BGP peers to be between /0 and /27
We are now looking to add another 2 BGP peerings. I am not too sure if the WS-SUP720-3B will be able to handle all the BGP routes. Is this limit of 256,000 IPv4 routes due to Processor memory limitation or is it software related? Would removing the "soft-reconfiguration inbound" save me some memory ?
We are running with Cisco ACS v4.0 AAA server, Here I need the use of Proxy distribution table.
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