Filling In Routing Table

Dec 8, 2012

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

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Cisco Switching/Routing :: VLAN 600 And 700 / HSRP Filling Up Logs?

May 3, 2012

It looks like both my HSRP Interfaces (VLAN 600 & 700) cycle through standby --> active ---> speak continuously on one of the two switches.  What can be causing this?
  
*May  4 06:41:24.883: %HSRP-5-STATECHANGE: Vlan700 Grp 0 state Speak -> Standby
*May  4 06:41:33.671: %HSRP-5-STATECHANGE: Vlan700 Grp 0 state Standby -> Active
*May  4 06:41:33.671: %HSRP-5-STATECHANGE: Vlan700 Grp 0 state Active -> Speak
*May  4 06:41:34.251: %HSRP-5-STATECHANGE: Vlan700 Grp 0 state Speak -> Standby
*May  4 06:41:47.691: %HSRP-5-STATECHANGE: Vlan700 Grp 0 state Standby -> Active
*May  4 06:41:47.703: %HSRP-5-STATECHANGE: Vlan700 Grp 0 state Active -> Speak

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Cisco WAN :: WS-SUP720-3B - 2 Full BGP Table - Maximum Routing Table?

Jan 16, 2013

In 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..

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Cisco DHCP Conflict Log Filling Up?

Mar 15, 2011

I have a Cisco 3750 running DHCP. We have a lot of guest users on the network, so the DHCP conflict table fills up quickly, and when it does, users can not get on the wireless network. I have to go in and clear the DHCP conflict log. (clear ip dhcp conflict *) and the problem is resolved. I see in the Cisco documentation if you don't have a DHCP database agent configured you should disable that log. I just want to make sure what the steps are and the ramifications are of disabling that log. Would IP address's still be freed up to use on the network? It also said about enabling 'ip dhcp ping' so DHCP will ping the address first to see if it's available.

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Cisco Switching/Routing :: 3560E - HSRP Gateway Failover And Routing Table

Nov 12, 2012

We have two Cisco 3560E layer 3 switches at the core of our network. The switches are configured as an HSRP pair and the clients on our network point to the HSRP address as their default gateway. So if CORE-A dies, then CORE-B will pick up the address and the default route for the clients will continue to be available.We also need to specify a few static routes on the core switch to allow us to get to specific networks. Is there a way to do this so that the routes failover in the same way that the default gateway does?

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Cisco Routers :: RV 042 V3 Advance Routing Feature Causes Static Routing Table Not To Appear

Jan 31, 2012

I tried the "Advanced Routing" Feature over the RV-042 V3 Dual WAN VPN Router , And the New IP Subnet i added ( 10.0.7.0 ) in the Static Routing Table does NOT Appear in the Routing Table of the Router. Please review the attached Print Screen for both the Static Routing Entry Configuration & the Routing Table of the RV-042 Router.

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Cisco Switching/Routing :: RIPv2 Routers Setting Routing Table For R3

Dec 5, 2012

I started using RIPv2 on Packet Tracer. I got two subnets to connect with two routers. After I completed that, I decided to add a third router. How to setup the Routing Table for atleast R3 ?

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Cisco Switching/Routing :: 2911 With IOS Version Is 15.1 - Routing Table Not Updating

Oct 2, 2012

I am using Cisco 2911 & IOS version is 15.1. My problem is that after some days (e.g. 15-20 days), the routing table suddenly stops updating & then I have to enter the default route again to make it up. I am using Track 1 to track default route here. After primary link goes down, the Track is also going down but after coming the primary link up, the track is not coming up. So, I have to add the default route again to make it up.

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Cisco Switching/Routing :: GNS3 - Stub Router Not Updating Routing Table - EIGRP

Nov 14, 2012

We have small which I'm looking to implement and have built this on GNS3.
 
We have:
 
Router A in site 1
Router B in site 2
Router C in site 3
 
Router A and B are connection via a point to point 100M link and from Router C we have a 2 point to point one of which is 5Mpbs and going to Router A and Router B.
 
For Router C to reach Router A network it will go via Router B and these are 100M connection. When the link between Router A and B goes down. Router C should update and start using the 5m route.
 
For some reson, the routes are not updating. I have to do 'clea ip eigrp ne' for the routes to update and if I reload the routers all works well, it seems the problem is intermittent.

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Cisco Switching/Routing :: Filter A Specific Host(s) From OSPF Routing Table On A ASA 5550 (ABR)?

May 22, 2013

I am attempting to filter a specific host(s) from my OSPF routiing table on a ASA 5550 (ABR) using LSA prefix lists.  However, when I look at the other routers in that area, I notice that ALL LSA type-3's are being removed (10 hosts are now missing from the routing table). I have verified the filter is working on the ABR, but I can't figure why ALL hosts/routes that were coming into the area are now being filtered instead of the specific one that I want to filter out.
 
Here is the config on the ABR:
 
prefix-list pdm_pl_000 seq 10 permit 206.253.180.137/32
!
!            
router ospf 1
network 10.0.0.0 255.255.255.0 area 0
network 10.150.10.0 255.255.255.0 area 10
network 10.150.252.0 255.255.255.224 area 10

[code]....
 
The 206.253.180.137 host is actually coming from Area '3'.  Am I doing something that is removing all type-3 LSA's?

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Understanding NAT Table And Its Chains (pre-routing / Post-routing And Output)?

May 28, 2011

I'm learning about iptables, but I don't fully understand the chains of NAT table (prerouting, postrouting and output).I'm specially in doubt about prerouting and postrouting. As far as I know, DNAT can be made with prerouting and SNAT can be made with postrouting, so I think prerouting is for input and postrouting is for output, but the material I'm reading (and another sources) are not clear.

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Cisco :: BGP Routes Not In Routing Table?

Feb 4, 2013

We 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.

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Data Structure For Routing Table

Feb 22, 2011

Which data structure used to preparation of a routing table.

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Routers And Static Routing Table

May 9, 2012

I 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)

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Cisco :: How To Remove These L Routes In Routing Table

Apr 2, 2013

viewtopic.php?f=33&t=24000

How can you remove these "L" routes in routing table?

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Cisco WAN :: 7200 Series NPE-G2 BGP Routing Table?

Jul 2, 2012

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?

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Cisco WAN :: Routing Table Size In 800 Series

May 26, 2013

What is the size of the routing table in the 800 series?

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Protocols / Routing :: Corrupt ARP Table On Quidway R1760

Dec 10, 2012

I have a problem on a router of mine, a Quidway R 1760.The problem occurs as follows. On Friday I rebooted the device and the ARP table looked right, in other words there were only a hand fully of lines that looked like this.

[code]...

I have two requests/questions.how can I prevent it.to a software manual for a Quidway R 1760 or simlar? I need to access the routers OS but have no password for it and cannot find any commands on the internet.

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Removing Default Entry In Routing Table For Windows XP?

Jan 23, 2011

I need to remove (or change) the default entry in the routing table for Windows XP, which routes packets with a destination equal to the adapter's address to localhost. The reason for this is I want the PC to be able to send packets to a device (with IP address A) connected to one adapter on the PC with IP address B, even though a second adapter on the PC has IP address A.

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Cisco WAN :: Routing Table Entries Support On 1921 / K9?

Nov 27, 2012

Is there a Table which the list the route table entries on Cisco ISR Router especially ISR 1921 Router.

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Cisco Switching/Routing :: 6509 Mac Table Held

Feb 6, 2013

On the 6509, with normal 67xx cards installed, where is all the mac table held, is it held on the card itself or on the supervisor? And if I use dcef cards, I gather the MSFC copies the mac table to the DFC ?

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Cisco Switching/Routing :: 1812 - Mac Address Table

Jan 11, 2012

Cisco 1812, Version 12.3(8)YI1..What does "none" mean ?Most of mac adressess in cam has specified interface, but several has none.

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Cisco :: Routing Table - Items Listed Variably Subnetted

Jul 7, 2012

I know its probably got something to do with EIGRP no auto-summary, I was wondering if I could get some input as to why a route would change from being variably subnetted, which is usually the case until no auto-summary is deployed. Or am I totally lost? I attached a screen shot for a closer observation.

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Cisco Switching/Routing :: 2800 / Clear Arp Table Every 5 Seconds?

Feb 19, 2012

I am in need to have the arp table cleared every 5 seconds or so on a 2800 router.  I was wondering how I might be able to accomplish this.

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Cisco Switching/Routing :: 2821 Bogus Arp Table Contents

Jul 23, 2012

My 2821 router has an arp table with the wrong ip to Mac mappings.  The impact is that I can reach any host in the 10.1.1.1 subnet.   I can reach hosts in the 192.168.35.0 just fine. [code] It is as if the 192.168.35.1 device is answering all arp requests as a proxy arp or something. Clear arp-cache nor clear ip arp on my 2821 have any affect. 

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Cisco Switching/Routing :: 6500 Not Showing Mac Address Table

Apr 8, 2013

we have 6500 cisco switch as a backbone switch in universty. When ı want to look mac addres table , it does no show all mac address.ı mean if ı type ;show mac address-table there are not all mac address.

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Cisco Switching/Routing :: 3750 IP Addresses Are Not Being Released From Table

Feb 21, 2012

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.

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Cisco Switching/Routing :: 3750 MAC Table Missing For One VLAN

Jan 18, 2012

I have one VLAN on a 3750 where I do not see any MAC addresses even though it is in use.  This is an unrouted VLAN between a WLC on a port- channel /LAG and an access port to an ASA for guest traffic.  When I do a show MAC add I get nothing for VLAN 60 (guest DMZ) but all other VLANs seem to be OK. Spanning tree is not showing TC counters incrementing either. 
 
I also was told when put a port on this VLAN the laptop did not get a DHCP address form the ASA, but the wireless guest clients are working fine.  I can see the DHCP leases and ARP entries in the ASA and the ASA ARP in the WLC so some traffic is passing fine.  I'm not onsite right now so troubleshooting is all remote which limits some options.

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Cisco VPN :: 2621 VPN Tunnel Drops Routes Out Of Routing Table

Dec 11, 2011

My main issue was trying to connect virtuelly via GNS3 and my router setup on it. I have three Cisco 2621 XM routers set up. They all came with 2 Fast Ethernet ports. However, only one of them has a Serial port. So, what I'm doing is connecting the routers together with the fast ethernet ports using crossover cables. So, I baselined two routers to start with. Very simple AAA, set up IP HTTP server, IP HTTP Secure Server, etc. Privledge lvl 15 access, etc.
 
I then set my Router A's inside Fa0/1 port with a 192.168.1.0/24 network. The outside port Fa0/0 is 10.0.0.0/30 network.Router B is set up similar, 192. 168. 2. 0/24 insice Fa0/1, Fa0/0 is 10.0.0.0/30 network outside. So, three networks 192.168.1.0, 192.168.2.0, 10.0.0.0 network. [code] I then repeated the same on Router B, just transposing 2.0 network for interesting traffic, and Peer 10.0.0.2 for the Fa0/0 interface on Router A.When I "test" the tunnel, I get an error message. So, since I'm connected to Router B (which was working, had routing, and had Router A's network 1.0 in it's routing table), the error msg says that I need to add a route into the routing table (192.168.1.0). It was there up until I attempted to put the VPN in place. It's like it stopped the routing.
 
At face value, it looks like this should be working! But when I debug the ospf process, it looks like hello packets aren't tranversing across to the other side. Is it because I just have the 192.xxx.xxx.xxx networks as "interesting" traffic? Can I have multiple networks marked as "interesting"? I thought that's what the peer statements were doing to allow the tunnel to be established.

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Cisco Switching/Routing :: Timeout For Mac Address Table In 3750E

Dec 6, 2011

I have 3750E swiches with IOS v. 12.2(55)SE3. Couple servers connect to ths switch, after ping of IP this servers I can see mac addresses in mac address table.
 
For instance:
sw1#show mac address-table vlan 20
          Mac Address Table
-------------------------------------------
 
Vlan    Mac Address       Type        Ports(code)
----    -----------       --------    -----
 
When ip generate traffic to this server this mac address appear in table again on shot time (less than 10 seconds).

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Cisco WAN :: Cat3560X - EIGRP Entries Missing In Routing Table

Sep 19, 2012

I have got two L3 switches, Cat3550 and Cat3560X. Cat3550 is present at head office and Cat3560X at the branch office. Both connected by 10MB LES link and have VLAN74.
 
[code]...

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Cisco Switching/Routing :: 2960 - Software For Testing MAC Table Count

Feb 23, 2012

A Network Lab (governmental) did not let our cisco 2960s switches to be imported to the country and said "according to my lab tests, the maximum mac that your switch can learn is about 500 but as cisco says it should be about 8000"
 
they did not give me their software but i like to test it myself
 
Is there a software which generates thousands of MAC and inject them into switch to test the real amount shown in show mac count ?

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Cisco Switching/Routing :: SW2960G - Server Is Not In Mac Address Table But Can Ping Its IP

Oct 28, 2012

I have the switch ============>>>>>        
 
sw2960g============server linux
 
As u see above , the inetrface Gi0/6  , Gi0/7  are  connected directly to linux server  by two redundent links .
 
I mean that Gi0/6 is connected to interface0 in linux server
and Gi0/7 is connect to interface interface1 in linux server
 
Gi0/6===>vlan 1
Gi0/7===>vlan 2
 
each interface of linux server has a different ip and different gateway .
 
Now  from switch, I  make ping to interface 0 of linux server and i have a reply , every thing is ok but when i type the command :
#sh mac address-table  | i Gi0/6
 
There is no Mac addresses and seems no Mac address relative to Gi0/6, I mean that doesn't it mandatorty to learn the mac address of linux server and write in mac table  relative beside  interface Gi0/6 ? How I could ping the server but no mac beside Gi0/6 ?

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