Community discussions

MikroTik App

Search found 10 matches

by jvr
Fri Mar 30, 2012 7:57 pm
Forum: General
Topic: block rogue dhcp traffic
Replies: 18
Views: 27645

Re: block rogue dhcp traffic

Hmm, if your only goal is to keep DHCP from traveling further upstream you could block it at the SXT station bridge by dropping inbound UDP 68 on the ethernet port. Anyone on the switch would still be affected by other rogue DHCP servers. Feklar, the horizon option looks neat. I'll have to play with...
by jvr
Fri Mar 30, 2012 12:05 pm
Forum: General
Topic: block rogue dhcp traffic
Replies: 18
Views: 27645

Re: block rogue dhcp traffic

DHCP works by broadcast, so if someone plugs in a DHCP server on your network it'll fight with your DHCP server and may the best router win. Obviously that leads to problems. In the case of our WAN we use radios that can block DHCP server responses at the customer's ethernet port, and in cases where...
by jvr
Fri Mar 30, 2012 10:01 am
Forum: General
Topic: block rogue dhcp traffic
Replies: 18
Views: 27645

Re: block rogue dhcp traffic

How are those clients connecting into your network? Directly into the switch?
by jvr
Fri Mar 30, 2012 8:28 am
Forum: General
Topic: Routing Issue
Replies: 2
Views: 947

Re: Routing Issue

You need to change the distances first off - make the less-preferred route for each have a higher distance. With the equal distances you'll basically be load balancing. Then, try setting "check gateway" for each route - that will ping the next hop and take it out if it can't reach it. It w...
by jvr
Fri Mar 30, 2012 8:15 am
Forum: Scripting
Topic: Help: Script to Web Cache a website
Replies: 1
Views: 1451

Re: Help: Script to Web Cache a website

Take a look at http://wiki.mikrotik.com/wiki/How_to_make_transparent_web_proxy . All of the commands for the webproxy can also be found under IP->Webproxy in winbox. I don't know what kind of router you are using, so space may be an issue depending on how large the site you are trying to cache is. A...
by jvr
Fri Mar 30, 2012 7:45 am
Forum: Forwarding Protocols
Topic: two providers and static pool of external IP from one ofthem
Replies: 1
Views: 1255

Re: two providers and static pool of external IP from one of

Try changing your mangle rules: /ip firewall mangle add action=mark-connection chain=prerouting comment="" disabled=no \ new-connection-mark=mark_ISP1 passthrough=yes src-address=192.168.0.0/16 add action=mark-routing chain=prerouting comment="" disabled=no \ new-routing-mark=to_...
by jvr
Fri Mar 30, 2012 7:14 am
Forum: General
Topic: VRRP with only virtual IP
Replies: 4
Views: 5844

Re: VRRP with only virtual IP

I was just working on this myself. In my lab setup I've got a pair of routers doing VRRP on the ether2 interface while the ether1 interfaces on both connect back into an OSPF mesh. I set up ether2 with the addresses of 10.10.10.1/30 and 10.10.10.2/30 and gave the VRRP interface the address of 10.100...
by jvr
Fri Mar 30, 2012 6:55 am
Forum: Forwarding Protocols
Topic: ip route print and large route tables
Replies: 3
Views: 2205

Re: ip route print and large route tables

I forgot to thank you, that was exactly what I needed! Thanks.
by jvr
Mon Feb 27, 2012 6:06 pm
Forum: Forwarding Protocols
Topic: ip route print and large route tables
Replies: 3
Views: 2205

ip route print and large route tables

Hello all, I have a router that's part of an OSPF/iBGP mesh that has full BGP route tables. This router also has several static routes. Is there any simple way to show just the static routes? The command /ip route print where Flags=S (or Flag=S) doesn't seem to do anything, and I can't find anything...
by jvr
Tue May 17, 2011 8:29 pm
Forum: Wireless Networking
Topic: N throughput/CCQ over a 4KM link
Replies: 2
Views: 1874

N throughput/CCQ over a 4KM link

Hello all, Our current setup for a primary backhaul has a pair of 411AH routerboards with atheros A/B/G (don't remember the model) cards on 29db 2' dishes and has been running solid for over a year, with max nstreme speeds of about 25Mbps/38Mbps tx/rx and solid CCQ. Our current utilization spikes at...