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by ChrisP
Fri Dec 13, 2013 11:03 am
Forum: RouterBOARD hardware
Topic: S-31DLC20D GBIC compatible with Cisco3750?
Replies: 3
Views: 2077

Re: S-31DLC20D GBIC compatible with Cisco3750?

I don't have a S-31DLC20D to test, but Cisco 3560/3750 switches can support 3rd party SFPs if you enter the following commands:

service unsupported-transceiver
no errdisable detect cause gbic-invalid

The first allows non-Cisco SFPs and the 2nd stops SFPs being put into the err-disable state.
by ChrisP
Mon Apr 08, 2013 2:44 pm
Forum: SwOS
Topic: Handling more than 700 Clients & VLAN
Replies: 2
Views: 1947

Re: Handling more than 700 Clients & VLAN

With 700 devices in the same layer 2 network every single device will receive & have to process every single broadcast frame, so splitting them up via VLANs would reduce this broadcast overhead. Ideally you'd have 50-100 devices maximum in the same layer 2 network. However I doubt an RB1200 is fast ...
by ChrisP
Tue Mar 19, 2013 8:10 pm
Forum: General
Topic: Replace cisco ASA5510 with mikrotik RB1100
Replies: 3
Views: 1299

Re: Replace cisco ASA5510 with mikrotik RB1100

Your ASA configuration is pretty straightforward, nothing that the RB1100 can't do. However what speed connection is the ASA handling?
by ChrisP
Wed Feb 20, 2013 4:25 pm
Forum: SwOS
Topic: SWOS DEAD?
Replies: 13
Views: 7063

Re: SWOS DEAD?

I've just checked the download site & SWOS 1.7 is now there, including for the RB250GS, however the change list is minimal: What's new in 1.7: *) updated web look *) fixed problem - setting link speed (without autoconfiguration) did not work (allways 10Mbits was used) Given that there's still a few ...
by ChrisP
Fri Feb 15, 2013 3:01 pm
Forum: SwOS
Topic: [Solved] MikroTik RB250GS & RB260GS
Replies: 1
Views: 2370

Re: MikroTik RB250GS & RB260GS

Layer 2 only - with VLANs, port mirroring & some simple access list capabilities.
by ChrisP
Wed Feb 06, 2013 6:32 pm
Forum: RouterBOARD hardware
Topic: Firmware 3.02 on RB 1200
Replies: 1
Views: 621

Re: Firmware 3.02 on RB 1200

I've been running RouterOS 5.23 & RouterBoot 3.02 for a few days on a RB1200 without any problems, however it's not doing a huge amount currently - just NAT, Firewall & L2TP/IPsec VPN.
by ChrisP
Wed Feb 06, 2013 2:52 pm
Forum: RouterBOARD hardware
Topic: RB260GS
Replies: 23
Views: 8747

Re: RB260GS

Does this mean SwOS is going to be updated soon? It's been ages since 1.6 was released & there's a number of issues with it that have been flagged up in the forum, for example http://forum.mikrotik.com/viewtopic.php?f=17&t=49646
by ChrisP
Tue Jan 22, 2013 3:47 pm
Forum: RouterBOARD hardware
Topic: RB1200 IPsec latency
Replies: 17
Views: 4397

Re: RB1200 IPsec latency

There's several threads where people have discovered the latency increase, but I've not seen an satisfactory explanation yet. This thread has links to a few more related discussions: http://forum.mikrotik.com/viewtopic.php?t=56779
by ChrisP
Fri Jan 18, 2013 3:49 pm
Forum: RouterBOARD hardware
Topic: RB1200 IPsec latency
Replies: 17
Views: 4397

Re: RB1200 IPsec latency

The 10-15ms latency increase seems to be a byproduct of the RB1200s limited IPsec acceleration, some further insights here http://forum.mikrotik.com/viewtopic.php?t=53026 & here http://forum.mikrotik.com/viewtopic.php?f=2&t=56504
by ChrisP
Wed Aug 29, 2012 10:55 pm
Forum: RouterBOARD hardware
Topic: RB1200 performance issues on ether9 and 10?
Replies: 8
Views: 6342

Re: RB1200 performance issues on ether9 and 10?

I've experienced similar problems with ether9 & 10, they're connected to the CPU differently (via PCI-e apparently) & this seems to hamper performance. Therefore I'd avoid using ether9 & 10 if possible.
by ChrisP
Tue Aug 07, 2012 11:17 pm
Forum: General
Topic: IPSec VPN to Cisco 1841 help
Replies: 5
Views: 3540

Re: IPSec VPN to Cisco 1841 help

I don't see a NAT exemption on the Cisco config either, normally in the ACL for the ip nat inside you add deny statements from the internal network to the far end internal network. Also if you put an ACL on the outside interface you'd need to allow UDP 500, 4500 & ESP via appropriate permit statemen...
by ChrisP
Mon Aug 06, 2012 8:13 pm
Forum: General
Topic: RB1200 Queuing CPU Utilisation
Replies: 2
Views: 762

Re: RB1200 Queuing CPU Utilisation

Forgot to say that it's running RouterOS v5.19. I've rebuilt the configuration from scratch & experience the same issue, weirdly if I move the connection to the cable modem to ether10 queuing only uses ~1.5% CPU time for the same throughput.
by ChrisP
Sun Aug 05, 2012 8:33 pm
Forum: General
Topic: RB1200 Queuing CPU Utilisation
Replies: 2
Views: 762

RB1200 Queuing CPU Utilisation

I recently upgraded from an RB750G to an RB1200 & have ported the configuration across - it's very simple just 5 ports in a switch group, the port connected to the cable modem picks up an address via DHCP & some firewall rules. However the CPU utilisation is surprisingly high, for example when pushi...