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- About Isaac Morgan
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Member since
03-21-2011
16
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04-26-2017
05:36 PM
Hi Rick, thanks for the post.
I just checked the 6500's and they do have the ip forward-protocol udp discard configured on them, I missed putting it in my initial post.
In regards to the packet flow this is what I have seen.
From the WOL server (SCCM 10.40.5.202) I am running wireshark and I see a WOL packet destined for the actual address of the client (10.40.110.50).
On the access switch I see the packet arrive as a broadcast t he source of 10.40.5.202 and destination of 255.255.255.255. I am using wireshark on another laptop with a monitor session mirroring the port of the client (10.40.5.202).
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04-25-2017
04:59 PM
The switch ports are configured as Trunks, but I do have spanning-tree portfast trunk enabled.
I have also tested on other switch ports that are just access ports, no difference.
Thanks for the reply.
... View more
04-20-2017
05:46 PM
Hi Georg,
The problem is that the PC's aren't waking up. It seems to be very hit and miss, more often miss.
The fact that we are seeing the packet on the switch to me says from a network perspective everything is correct. Would this be a safe assumption?
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04-19-2017
11:03 PM
I will try and make this easy to understand but it will get a bit long, however I don't want to leave anything out.
I am troubleshooting a WOL issue for a customer.
They have a core, distribution layer, and access layer.
Links between core and distribution are layer 3, links between distribution and access layer are also layer 3.
6500's are the core, 3850's distribution and 3650's are access layer.
The WOL server is in VLAN 4, 10.40.5.202/22 on the 6500's.
The Client is in VLAN 110, 10.40.110.0/24 on the 3650's.
On VLAN 4 on the 6500's I have configured the broadcast address of VLAN 110 as an ip helper 10.40.110.255
On the 3650's I have configured ip forward protocol udp discard
On the 3650's I have configured access-list 100 permit udp host 10.40.5.202 any eq discard
On the 3650's I have configured VLAN 110 with ip directed broadcast 100
There is a host connected to the 3650's in VLAN 110 with the IP address 10.40.110.50
When WOL packets are sent from the WOL server wireshark shows the packet leave the server as source 10.40.5.202 and destination of 10.40.110.50.
With a mirror port on the 3650's and wireshark monitoring the port of the host in VLAN 110 I can see a WOL packet with the source of 10.40.5.202 and destination of 255.255.255.255. The ethernet src is from the switches VLAN interface the dst is FF:FF:FF:FF:FF:FF. The packet also contains Magic packet for the real mac address of the host.
I always see the ACL on the switch got up according to how many packets are sent from the WOL server, however with a WOL packet sniffer on the host it doesn't always see the packets.
From a network perspective it all looks to be fine, anyone have any suggestions?
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- Tags:
- wol
Labels:
Created by
Isaac Morgan
in Switching
in Switching
10-28-2013
03:09 PM
10-28-2013
03:09 PM
Just an update, put this into production this week. Worked a treat. ROUTER1 no redistribute static metric 10000 10 255 1 1500 ip access-list standard redist-default-eigrp permit 0.0.0.0 ! ip access-list standard redist-ract-eigrp permit 10.10.5.0 0.0.0.255 permit 10.150.10.0 0.0.0.255 permit 10.150.60.20 0.0.0.0 permit 203.20.20.0 0.0.0.255 permit 203.20.21.0 0.0.0.255 permit 203.20.22.0 0.0.0.255 permit 203.20.23.0 0.0.0.255 ! route-map redist-static-eigrp permit 10 match ip address redist-default-eigrp set metric 1000000 10 255 1 1500 ! route-map redist-static-eigrp permit 20 match ip address redist-ract-eigrp set metric 1000000 10 255 1 1500 ! router eigrp 10 redistribute static route-map redist-static-eigrp ROUTER3 ip access-list standard redist-static-eigrp permit 0.0.0.0 ! route-map redist-static-eigrp permit 10 match ip address redist-default-eigrp set metric 10 1000000 1 1 1500 ! router eigrp 10 redistribute static route-map redist-static-eigrp
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Created by
Isaac Morgan
in Switching
in Switching
10-08-2013
04:00 AM
10-08-2013
04:00 AM
Thanks for the reply Guiseppe. I will have a look at doing it this way, which will work for sure. Is there any other way of injecting static routes into EIGRP or have I chosed the right method? UPDATED This is exactly what I was after. Set it up in GNS3 today and works a treat. Thanks again Guiseppe. Cheers, Isaac
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10-07-2013
11:34 PM
I can't see any reason why you would have anything configured as HALF DUPLEX. Hard set these ports to FULL DUPLEX and the correct SPEED. You may have to do this on both ends if you are connecting to another SWITCH/ROUTER When troubleshooting duplex should be your first place to look. For all work switch ports that connect to works stations at my work we use speed 100 duplex full. They don't need 1GB at the desktop so I don't give it to them. Take the change that our 1GB uplinks from the switches can be flooded by a single user aswell.
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Created by
Isaac Morgan
in Switching
in Switching
10-07-2013
11:30 PM
10-07-2013
11:30 PM
I am doing some lab trials with GNS3 to try and work out a better method of redistributing static routes into our network. What I want to do is redistribute multiple route-maps into EIGRP. Below is a run down of what I have setup so far. I have setup the default route 0.0.0.0 0.0.0.0 Null0 on both R1 and R3 I have setup ip route ip route 10.10.5.0 255.255.255.0 10.33.4.6 and ip route 203.20.20.0 255.255.255.0 10.33.4.6 on R1 R4 has static routes back into the network What I have setup in my lap is 3 core routers and I have R1 and R3 setup with route maps redistributing the default route as below - #####R1##### router eigrp 10 redistribute static route-map redist-default-eigrp ! ip access-list standard redist-default-eigrp permit 0.0.0.0 ! route-map redist-default-eigrp permit 10 match ip address redist-default-eigrp set metric 1000000 10 255 1 1500 ! #####R3####### router eigrp 10 redistribute static route-map redist-default-eigrp ! ip access-list standard redist-default-eigrp permit 0.0.0.0 ! route-map redist-default-eigrp permit 10 match ip address redist-default-eigrp set metric 100 100000 1 1 1500 The above works as expected the route redistributed from R1 is of high preference and R2 sees it this way. Now what I want to do is add another route map that will distribute the static routes require to get to R4, so I have created the following configurations ###########R1############# ip access-list standard redist-ract-static permit 10.10.5.0 0.0.0.255 permit 203.20.20.0 0.0.0.255 ! route-map redist-ract-static permit 10 match ip address redist-ract-static set metric 10000 10 255 1 1500 The problem I have is that when I do the following command it removes the existing redistribution map from eigrp. router eigrp 10 redistribute static route-map redist-ract-static Is there a way to redistribute multiple route maps into EIGRP? Any help greatly appreciated. Isaac
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04-14-2012
03:06 PM
Hi Peter, Thanks for the reply. I have a change window this week to test it out so I will post the results once I have tested. Isaac.
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04-10-2012
12:28 AM
Hi, I am working in a environment that is classed as collapssed Layer 3 environment. We have a core 6500 with routed links to 3560's which are access switches. We have layer 3 vlans on the access switches, one for data one for voice. On the layer 3 vlans we have ip helper addresses that are used for DHCP. The DHCP servers are located on the 6500. I recently had a incident where someone plugged a netgear router into a desk point because they thought they could use it for a switch. This router then started to dish out IP addresses to people in the morning for those who came in and docked their laptops. 99% of people weren't affected because they have desktop PC's are their leases hadn't expired. Now we have bpduguard, bpdufilter to prevent people from plugging in switches that send out BPDU's. However this doesn't prevent the above senario where someone plugs a router or a 'dumb' switch that doesn't send BPDU's. Because of the above senario I started looking at DHCP Snooping, but I am unsure on a couple of things. With the topology of our network I understand that I don't need to configure IP DHCP Snooping Trust on the L3 uplinks to our core switch. From what I understand I just need to enable IP DHCP Snooping globaly and then on the VLAN's on the access switch (because of the L3 topology VLAN's are local to the access switches). Only if I had L2 uplinks to the core would I need to configure IP DHCP Snooping Trust on the trunk links. Can anyone confirm if my understanding is correct, or perhaps provide further info for me. Most examples/configurations I have seen are for L2 configurations only. Regards, Isaac
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- Tags:
- dhcp
Labels:
05-01-2011
10:19 PM
I can confirm it work when running archive command from EXEC I have set it for 5 minutes but it doesn't appear to be working It also works correctly when I use write memory, I don't want to just leave it at write memory as we have been caught out recently where some changes were done to a switch, site lost power, switch loaded up with old config.........
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05-01-2011
09:42 PM
Is there any issue with setting the time to 5 minutes, I just want to make sure it is copying correctly. At the moment it isn't copying on schecdule only when I use WR archive path t ftp://10.33.4.70/DR_SWITCH_1/$h write-memory time-period 5 Isaac
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05-01-2011
09:11 PM
Thank you very much for your reply. I have implemented the archive feature and appears to be working well. I am just testing it on a couple of switches atm to see how it goes. Isaac
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05-01-2011
05:19 PM
I have scheduled Kron backup jobs on my switches and routers. I have scheduled it as below - kron occurrence SaveConfig at 23:30 Sun recurring policy-list SaveConfig ! kron occurrence BackupRunningConfig at 23:45 Sun recurring policy-list BackupRunningConfig ! kron policy-list SaveConfig cli write ! kron policy-list BackupRunningConfig cli show running-config | redirect t ftp://10.33.4.70/DR_SWITCH_1/DR_SWITCH_1 This is working fine for me, the only problem is that each time it overwrites the exisiting config. I would like to be able to keep the configs catalogued just incase I need to roll back, is any one aware of how to do this, perhaps put a time and date stamp on it? Regards, Isaac
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Labels:
Created by
Isaac Morgan
in TelePresence and Video Infrastructure
10-15-2017
10-15-2017
I ended up getting this working with the following -
http://cookbook.fortinet.com/configure-hair-pin...
04-26-2017
Hi Rick, thanks for the post. I just checked the 6500's and they do have
the ip forward-protocol udp...
04-25-2017
The switch ports are configured as Trunks, but I do have spanning-tree
portfast trunk enabled. I hav...
04-20-2017
Hi Georg, The problem is that the PC's aren't waking up. It seems to be
very hit and miss, more ofte...
04-19-2017
I will try and make this easy to understand but it will get a bit long,
however I don't want to leav...
10-28-2013
Just an update, put this into production this week.Worked a treat.
ROUTER1no redistribute static met...
10-08-2013
Thanks for the reply Guiseppe.I will have a look at doing it this way,
which will work for sure.Is t...
10-07-2013
I can't see any reason why you would have anything configured as HALF
DUPLEX.Hard set these ports to...
10-07-2013
I am doing some lab trials with GNS3 to try and work out a better method
of redistributing static ro...
04-14-2012
Hi Peter,Thanks for the reply.I have a change window this week to test
it out so I will post the res...
04-10-2012
Hi,I am working in a environment that is classed as collapssed Layer 3
environment. We have a core 6...
05-01-2011
I can confirm it work when running archive command from EXECI have set
it for 5 minutes but it doesn...
05-01-2011
Is there any issue with setting the time to 5 minutes, I just want to
make sure it is copying correc...
05-01-2011
Thank you very much for your reply. I have implemented the archive
feature and appears to be working...
Public Statistics
| Date Registered | 03-21-2011 10:52 PM |
| Date Last Visited | 10-11-2018 05:58 PM |
| Total Messages Posted | 16 |
