Hi Ramin,
i have worked with customer who have run significantly more dot1q vlans
on a GSR.... so this problem is strange. if you can send me some info
on the issue offline, i would be happy to look into it for you.
regards
.siva
>
> I just spent the better part of a week tracking down a similar problem on a
> set of GSR's. Turns out from my testing that the GSR's would only support 6
> dot1q vlans on my hardware since all my wacky problems went away after
> reducing the number of them to 6 from 8. Still waiting to see what Cisco
> has to say about that. I had no such problems with the VXR's on an FE-ISL
> card, but it may be something to investigate if you are doing several (more
> then the 8 I had working) vlans.
>
> Ramin
>
> At 11:20 PM 3/8/01 +0200, Dmitri Kalintsev wrote:
> >Hi guys,
> >
> >I'm having rather hard time finding what's wrong in seemingly stupid
> >situation:
> >
> >!
> >interface FastEthernet0/0
> > ip address <real ip address> 255.255.255.128
> > no ip directed-broadcast
> > full-duplex
> >!
> >interface FastEthernet0/0.1
> > no ip redirects
> > no ip directed-broadcast
> >!
> >interface FastEthernet0/0.77
> > encapsulation dot1Q 77
> > ip address 10.1.1.5 255.255.255.252
> > no ip directed-broadcast
> >!
> >
> >(I've tried no ip address on maininterface and f0/0.1 in dit1q vlan 1,
> >result is the same).
> >
> >7206-vpn-test#ping 10.1.1.6
> >
> >Type escape sequence to abort.
> >Sending 5, 100-byte ICMP Echos to 10.1.1.6, timeout is 2 seconds:
> >
> >19:41:37: IP: s=10.1.1.5 (local), d=10.1.1.6 (FastEthernet0/0.77), len 100,
> >sending
> >19:41:37: IP: s=10.1.1.5 (local), d=10.1.1.6 (FastEthernet0/0.77), len 100,
> >encapsulation failed.
> >19:41:39: IP: s=10.1.1.5 (local), d=10.1.1.6 (FastEthernet0/0.77), len 100,
> >sending
> >19:41:39: IP: s=10.1.1.5 (local), d=10.1.1.6 (FastEthernet0/0.77), len 100,
> >encapsulation failed.
> >19:41:41: IP: s=10.1.1.5 (local), d=10.1.1.6 (FastEthernet0/0.77), len 100,
> >sending
> >19:41:41: IP: s=10.1.1.5 (local), d=10.1.1.6 (FastEthernet0/0.77), len 100,
> >encapsulation failed.
> >19:41:43: IP: s=10.1.1.5 (local), d=10.1.1.6 (FastEthernet0/0.77), len 100,
> >sending
> >19:41:43: IP: s=10.1.1.5 (local), d=10.1.1.6 (FastEthernet0/0.77), len 100,
> >encapsulation failed.
> >19:41:45: IP: s=10.1.1.5 (local), d=10.1.1.6 (FastEthernet0/0.77), len 100,
> >sending
> >19:41:45: IP: s=10.1.1.5 (local), d=10.1.1.6 (FastEthernet0/0.77), len 100,
> >encapsulation failed.
> >Success rate is 0 percent (0/5)
> >
> >I've tried to change dot1q to ISL, and result is the same, "encapsulation
> >failed". FE works fine, if I don't use VLAN's. I've tried different IOS
> >sets, too. Oh, yes. And a different router. First was 7206vxr with npe300
> >and dual FE IO controller, this current one is 7206 with npe200 and vanilla
> >IO controller. No difference.
> >
> >Switch side I presume is not guilty, as this very same switch runs a few
> >dot1 trunks to other switches without problem. Switch is Cat2948, so it only
> >supports dot1q trunks. Switch and router perfectly see each other on cdp
> >neighbor list, too.
> >
> >7206-vpn-test#sh int f0/0.77
> >FastEthernet0/0.77 is up, line protocol is up
> > Hardware is DEC21140A, address is 0004.de2f.8000 (bia 0004.de2f.8000)
> > Internet address is 10.1.1.5/30
> > MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
> > reliability 255/255, txload 1/255, rxload 1/255
> > Encapsulation 802.1Q Virtual LAN, Vlan ID 77.
> > ARP type: ARPA, ARP Timeout 04:00:00
> >
> >It seem to recognize that it's a VLAN interface, too...
> >
> >There is nothing really I can think of now, and what the hell should I think
> >of? This is a simple configuration, as simple as it gets, and I had it
> >working in dozens of other places. :( Any ideas?
> >
> >SY,
> >--
> >D.K.
>
>
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