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About cld
cld
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We have decided to buy Cisco L3 switches. Our Meraki MS250 and MS210 L3 switches are configured and in use as L2 switches.
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@Bruce I am quite sure the "Routed Clients" number is not the maximum size of the MAC address table. In the Meraki MS250 Data Sheet (https://meraki.cisco.com/lib/pdf/meraki_datasheet_ms250.pdf) one can read: "MAC forwarding entries: 16K on 24-port models, 32K on 48-port models". These numbers must be the maximum size of the MAC address table.
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The Meraki document "MS Layer 3 Switching and Routing" contains a table with supported models. Can someone explain the meaning of "Routed Clients" in this table? For MS250 the routed clients number in the table is 4096. We have an MS250 in our network. We have not configured layer 3 settings yet. As we are having significantly more than 4096 clients in our network (>5000), I am worried that we could get into trouble when activating L3 routing on the MS250. https://documentation.meraki.com/MS/Layer_3_Switching/MS_Layer_3_Switching_and_Routing#Configuring_Static_Routes
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@PhilipDAth Thank you for your reply. We use 2 different W0L executables from two different servers: 1. wol.exe included in Lansweeper: wol.exe /? WOL.exe 2.1 - Wake-On-LAN Utility - www.Gammadyne.com Copyright (C) 2000-2017 by Greg Wittmeyer - All Rights Reserved Usage: wol.exe mac_address [adapter_ip] [port] [/pwd password] [/d subnet] Example: wol.exe 3c7f45d9e56a Example: wol.exe 7A-2C-74-EE-19-F3 192.168.0.1 Example: wol.exe f1:dc:84:e6:2a:c9 192.168.0.1 12287 Example: wol.exe 7363be847f12 9 /pwd sesame Example: wol.exe 45F7BA186E4D /pwd 16a34d28f4c3 Example: wol.exe E682B634D7A6 /pwd 2A:E3:64:DD:59:3F Example: wol.exe 13-A4-99-1F-C4-8E /d 192.168.2.255 From a Wireshark packet trace we see that IPv4 WoL packets are sent to the broadcast address 255.255.255.255, port 12287. 2. wolcmd.exe included in ConfigMgr Console Extensions: wolcmd.exe /? Wake On Lan Command Line... Usage: wolcmd [mac address] [ipaddress] [subnet mask] [port number] i.e. wolcmd 009027a322fc 195.188.159.20 255.255.255.0 7 or wolcmd 009027a322fc depicus.com 255.255.255.0 7 Copyright www.depicus.com (Brian Slack) 1966-2005 The scheduled tasks (daily/monthly) use a script with the following command: "C:\Program Files (x86)\ConfigMgr Console Extensions\wolcmd.exe"" $($ComputerMAC.Replace(':','')) 255.255.255.255 255.255.255.255 12287" The right-click Wake on LAN option in SCCM (Microsoft Endpoint Configuration Manager) sends IPv4 magic packets to the subnet broadcast address of the pc we want to wake. The problem we are facing with the Meraki L3 switches is that the WoL IPv4 broadcast packets cannot be forwarded from our server vlan to the pc vlan's. I do not understand how pywake can solve this. Could you explain this?
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In our school we are extensively using Wake on LAN to wake desktop computers: daily scheduled task to wake computers in classrooms before the start of the first lessons monthly scheduled task to wake computers at night to install software updates ad hoc wake computers for e.g. software maintenance The WoL magic packets are sent from management servers in our server vlan to desktop computers in two locations in multiple vlan's separated by one or two L3 switches. At present we have cisco Catalyst L3 switches. For the WoL packets to reach the desktop computers, we have configured the following commands: ip directed-broadcast 150 ip helper-address 10.1.x.255 (broadcast address for each desktop vlan) access-list 150 permit udp 10.1.1.0 0.0.0.255 any eq 12287 (10.1.1.0 server subnet address) ip forward-protocol udp 12287 (udp port number of WoL magic packets). This month we have acquired new MS250 and MS210 L3 switches to replace our old Cisco Catalyst L3 switches. However, the Meraki switches are missing the ip directed broadcast feature. I have contacted Meraki support and they have confirmed the absence of this feature: "We do not currently support IP Directed Broadcasts, therefore, there is not an option to configure this." This is a big disappointment for us because now we cannot use the new Meraki switches for their intended L3 purpose. We have considered several work arounds such as adding a network interface for each desktop vlan to our management servers and using an "always on helper pc" in the vlan's in our remote location. However, these work arounds cannot fully replace the present functionality and would mean a significant amount of additional work and complexity. I have submitted a request for the ip directed broadcast feature to the development team.
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Jun 15 2020
4:35 AM
We intend to buy one or more Meraki MS210 switches. We need L3 routing for multiple directly connected subnets and some subnets behind another router. How many routes can a MS210 switch have in its routing table? 16 routes to directly connected subnets + 16 static routes to subnets elsewhere + 1 default route = 33 routes? Thank you.
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