Hi, this is my first post on the list; i have a simple question.
I have a usb printer attached to a router which works also as print server (ip: 192.168.0.50, call this 'print server router'); this print server router is wire linked with another router (using RIP version 1, for both in and out), which is the gateway to internet, a router, a dhcp server, and also a wifi access point (192.168.0.1, call this 'main router').
I've got also: a) PC 1, eth linked to the main router; b) PC2, wifi linked to the main router.
So: when i searched the network printer (using system-config-printer) in the PC1, it worked very well and quickly found my samsung printer; when i searched the network printer in the PC2, it couldn't find anything: but after several trials i found that putting 192.168.0.50 (which is the ip of the print server router) in the textarea host field in the system-config-printer->find network printer GUI, the printer was immediately found and worked very well.
The question is: why do I have to put the ip address in the host field on the gui when configuring the network printer from PC2 (wifi), when PC1 (ethernet) doesn't need it? Maybe there is some conf of Avahi that could be changed?
Thanks, Daniele Guerrieri
Perhaps there is a difference in the firewall settings between PC1 and PC2?
Do you know what protocol the print server router is using to advertise the printer on the network? It might be SNMP (i.e. responding to SNMP broadcast requests), or mDNS, or possibly NetBIOS/SMB.
Tim. */
On Thu, Jun 16, 2011 at 4:07 PM, Tim Waugh twaugh@redhat.com wrote:
Perhaps there is a difference in the firewall settings between PC1 and PC2?
uhm, i don't think because system-config-printer automatically setup firewall for printing in the same way (trusted services: mDns, IPP client/server).
Do you know what protocol the print server router is using to advertise the printer on the network? It might be SNMP (i.e. responding to SNMP broadcast requests), or mDNS, or possibly NetBIOS/SMB.
in system-config-printer i can read "lpd network printer via DNS-SD"; this is a fragment of the dump, maybe it is mDNS?:
"""""" 07:17:47.608766 ARP, Request who-has 192.168.0.50 tell 192.168.0.2, length 28 07:17:47.609379 IP 192.168.0.2.43194 > 192.168.0.1.domain: 37448+ PTR? 50.0.168.192.in-addr.arpa. (43) 07:17:47.611605 ARP, Reply 192.168.0.50 is-at 00:22:b0:8a:8e:62 (oui Unknown), length 46 07:17:47.611633 IP 192.168.0.2.34255 > 192.168.0.50.jetdirect: Flags [S], seq 2329149880, win 14600, options [mss 1460,sackOK,TS val 206209 ecr 0,nop,wscale 6], length 0 07:17:47.615046 IP 192.168.0.50.jetdirect > 192.168.0.2.34255: Flags [S.], seq 1522585684, ack 2329149881, win 5792, options [mss 1460,sackOK,TS val 51344 ecr 206209,nop,wscale 0], length 0 07:17:47.615144 IP 192.168.0.2.34255 > 192.168.0.50.jetdirect: Flags [.], ack 1, win 229, options [nop,nop,TS val 206216 ecr 51344], length 0 07:17:47.616020 IP 192.168.0.2.34255 > 192.168.0.50.jetdirect: Flags [F.], seq 1, ack 1, win 229, options [nop,nop,TS val 206217 ecr 51344], length 0 07:17:47.617881 IP 192.168.0.2.47691 > 192.168.0.50.ipp: Flags [S], seq 2322187546, win 14600, options [mss 1460,sackOK,TS val 206219 ecr 0,nop,wscale 6], length 0 07:17:47.622120 IP 192.168.0.50.jetdirect > 192.168.0.2.34255: Flags [.], ack 2, win 5792, options [nop,nop,TS val 51345 ecr 206217], length 0 07:17:47.636818 IP 192.168.0.1.domain > 192.168.0.2.43194: 37448 NXDomain* 0/1/0 (93) 07:17:47.833627 IP 192.168.0.50.jetdirect > 192.168.0.2.34255: Flags [F.], seq 1, ack 2, win 5792, options [nop,nop,TS val 51360 ecr 206217], length 0 07:17:47.833766 IP 192.168.0.2.34255 > 192.168.0.50.jetdirect: Flags [.], ack 2, win 229, options [nop,nop,TS val 206435 ecr 51360], length 0 07:17:50.622773 IP 192.168.0.2.47691 > 192.168.0.50.ipp: Flags [S], seq 2322187546, win 14600, options [mss 1460,sackOK,TS val 209224 ecr 0,nop,wscale 6], length 0 07:17:50.905591 IP 192.168.0.1.router > 192.168.0.255.router: RIPv1, Response, length: 24 07:17:52.614734 ARP, Request who-has 192.168.0.1 tell 192.168.0.2, length 28 07:17:52.616216 ARP, Reply 192.168.0.1 is-at 00:1e:2a:f5:13:ec (oui Unknown), length 28 07:17:56.630766 IP 192.168.0.2.47691 > 192.168.0.50.ipp: Flags [S], seq 2322187546, win 14600, options [mss 1460,sackOK,TS val 215232 ecr 0,nop,wscale 6], length 0 07:17:58.586964 IP 192.168.0.50.mdns > 224.0.0.251.mdns: 0*- [0q] 6/0/0 (Cache flush) TXT "", PTR _http._tcp.local., PTR DIR-120-HTTP._http._tcp.local., (Cache flush) TXT "rp=lp1" "qtotal=2", PTR _printer._tcp.local., PTR Samsung SCX-4300 Series 1457BFAQA01583V.._printer._tcp.local. (211) 07:18:08.662766 IP 192.168.0.2.47691 > 192.168.0.50.ipp: Flags [S], seq 2322187546, win 14600, options [mss 1460,sackOK,TS val 227264 ecr 0,nop,wscale 6], length 0 07:18:20.908466 IP 192.168.0.1.router > 192.168.0.255.router: RIPv1, Response, length: 24 07:18:32.726777 IP 192.168.0.2.47691 > 192.168.0.50.ipp: Flags [S], seq 2322187546, win 14600, options [mss 1460,sackOK,TS val 251328 ecr 0,nop,wscale 6], length 0 07:18:37.734774 ARP, Request who-has 192.168.0.50 tell 192.168.0.2, length 28 07:18:37.736961 ARP, Reply 192.168.0.50 is-at 00:22:b0:8a:8e:62 (oui Unknown), length 46
""""""
Thanks, Daniele Guerrieri
On Fri, 2011-06-17 at 07:29 +0200, Daniele Guerrieri wrote:
in system-config-printer i can read "lpd network printer via DNS-SD"; this is a fragment of the dump, maybe it is mDNS?:
Yes, that's mDNS then. Perhaps avahi isn't installed/running on the other machine?
Tim. */
Avahi is installed on both machines. Also, after a recent upgrade it doesn't work no more; where can i see a detailed cups log? To make it work the first time i needed to completely disable selinux (selinux policy disabled), that was preventing rastertospl from working.
Thanks
On Thu, Jun 30, 2011 at 2:16 PM, Tim Waugh twaugh@redhat.com wrote:
On Fri, 2011-06-17 at 07:29 +0200, Daniele Guerrieri wrote:
in system-config-printer i can read "lpd network printer via DNS-SD"; this is a fragment of the dump, maybe it is mDNS?:
Yes, that's mDNS then. Perhaps avahi isn't installed/running on the other machine?
Tim. */
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On Thu, 2011-07-07 at 17:05 +0200, Daniele Guerrieri wrote:
Avahi is installed on both machines. Also, after a recent upgrade it doesn't work no more; where can i see a detailed cups log? To make it work the first time i needed to completely disable selinux (selinux policy disabled), that was preventing rastertospl from working.
/var/log/cups/error_log
You can adjust the log level using 'cupsctl LogLevel=debug2' as root (see 'man cupsd.conf' for valid values).
Tim. */
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On 07/07/2011 11:05 AM, Daniele Guerrieri wrote:
Avahi is installed on both machines. Also, after a recent upgrade it doesn't work no more; where can i see a detailed cups log? To make it work the first time i needed to completely disable selinux (selinux policy disabled), that was preventing rastertospl from working.
Did you open a bugzilla?
Thanks
On Thu, Jun 30, 2011 at 2:16 PM, Tim Waugh twaugh@redhat.com wrote:
On Fri, 2011-06-17 at 07:29 +0200, Daniele Guerrieri wrote:
in system-config-printer i can read "lpd network printer via DNS-SD"; this is a fragment of the dump, maybe it is mDNS?:
Yes, that's mDNS then. Perhaps avahi isn't installed/running on the other machine?
Tim. */
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Daniel J Walsh -
Daniele Guerrieri -
Tim Waugh