Ovako, imam jedan cudan problem na poslu sa jednostavnim povezivanjem dva Catalyst switcha i to:
1. swirch - Catalyst 3550, konfigurisan kao VTP server, sa tri VLAN-a
2. switch - Catalyst 2950, konfigurisan kao VTP client
Topologija izgleda otprilike ovako:
Cat3550(f0/1) -> transparent_wireless_AP1 ->transparent_wireless-AP2 -> Cat2950(f0/24)
I interfejs f0/1 na Cat3550 i interfejs f0/24 na Cat2950 su konfigurisani kao trunk portovi sa dot1q enkapsulacijom i dozvoljeni su svi VLAN-ovi.
Na Cat3550 postoje tri IP adrese za pomenuta tri VLAN-a (172.16.1.1, 172.16.2.1 i 172.16.3.1), dok na Cat2950 ima jedna adresa za VLAN 1 (172.16.1.2)
Stanje je sledece:
1. oba switcha se vide po CDP protokolu (show cdp neigbor detail)
2. razmjena VTP baze sa VTP servera na VTP client radi (na Cat2950 show vlan prikazuje sva tri VLANa)
3. ping ne prolazi ni sa jedne strane
Evo kako ja na to gledam:
1. paketi koji ne zahtjevaju VLAN tag i koji se salju multicast-om salju se bez problema (CDP, VTP)
2. paketi koji su tagovani sa VLAN-om ne prolaze (ping ..). Nema ni ARP zapisa u ARP keshu.
Sve mi upucuje na to da wireless AP-ovi ne proslijedjuju broadcast nego samo multicast, te zbgog toga radi CDP i VTP koji se prenose broadcast-om a ne radi ARP (a kao posledica toga ni pinganje) jer se ARP Request prenosi broadcastom.
U debug listingu na CAT2950 se javlja stavka ''enacpsulation failed''. 100% sam siguran da su trunk portovi dobro konfigursani (switchport trunk encapsulation dot1q, switchport mode trunk, s tim sto CAT2950 ne trazi eksplicitno navodjenje moda enkapsulacije jer podrzava samo dot1q).
Listin sa debug komandama pri slanju ping paketa sa oba switcha je ispod:
*************************************************
Cat2950 listing:
CAT2950#debug ip packet de
CAT2950#debug ip packet detail
IP packet debugging is on (detailed)
CAT2950#
CAT2950#pin
CAT2950#ping 172.16.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.1.1, timeout is 2 seconds:
00:07:42: datagramsize=100, IP 35: s=172.16.1.2 (local), d=172.16.1.1 (Vlan1), t
otlen 100, fragment 0, fo 0, sending
00:07:42: ICMP type=8, code=0.
00:07:45: datagramsize=100, IP 35: s=172.16.1.2 (local), d=172.16.1.1 (Vlan1), t
otlen 100, fragment 0, fo 0, encapsulation failed
00:07:45: ICMP type=8, code=0
00:07:45: datagramsize=100, IP 36: s=172.16.1.2 (local), d=172.16.1.1 (Vlan1), t
otlen 100, fragment 0, fo 0, sending
00:07:45: ICMP type=8, code=0.
00:07:48: datagramsize=100, IP 36: s=172.16.1.2 (local), d=172.16.1.1 (Vlan1), t
otlen 100, fragment 0, fo 0, encapsulation failed
00:07:48: ICMP type=8, code=0
00:07:48: datagramsize=100, IP 37: s=172.16.1.2 (local), d=172.16.1.1 (Vlan1), t
otlen 100, fragment 0, fo 0, sending
00:07:48: ICMP type=8, code=0.
00:07:51: datagramsize=100, IP 37: s=172.16.1.2 (local), d=172.16.1.1 (Vlan1), t
otlen 100, fragment 0, fo 0, encapsulation failed
00:07:51: ICMP type=8, code=0
00:07:51: datagramsize=100, IP 38: s=172.16.1.2 (local), d=172.16.1.1 (Vlan1), t
otlen 100, fragment 0, fo 0, sending
00:07:51: ICMP type=8, code=0.
00:07:54: datagramsize=100, IP 38: s=172.16.1.2 (local), d=172.16.1.1 (Vlan1), t
otlen 100, fragment 0, fo 0, encapsulation failed
00:07:54: ICMP type=8, code=0
00:07:54: datagramsize=100, IP 39: s=172.16.1.2 (local), d=172.16.1.1 (Vlan1), t
otlen 100, fragment 0, fo 0, sending
00:07:54: ICMP type=8, code=0.
Success rate is 0 percent (0/5)
CAT2950#
00:07:57: datagramsize=100, IP 39: s=172.16.1.2 (local), d=172.16.1.1 (Vlan1), t
otlen 100, fragment 0, fo 0, encapsulation failed
00:07:57: ICMP type=8, code=0
Cat2950#
***********************************************************************
CAT3550 listing:
**********************************************************************
CAT3550#deb
CAT3550#debug ip pa
CAT3550#debug ip packet
IP packet debugging is on
CAT3550#PIN
CAT3550#ping 172.16.1.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.1.2, timeout is 2 seconds:
01:02:50: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending
01:02:50: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending full
packet.
01:02:52: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending
01:02:52: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending full
packet.
01:02:54: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending
01:02:54: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending full
packet.
01:02:56: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending
01:02:56: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending full
packet.
01:02:58: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending
01:02:58: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending full
packet.
Success rate is 0 percent (0/5)
CAT3550#ping 172.16.1.2 det
CAT3550#ping 172.16.1.2 deta
CAT3550#deb
CAT3550#debug ip pa
CAT3550#unde
CAT3550#undebug all
All possible debugging has been turned off
CAT3550#deb
CAT3550#debug ip pa
CAT3550#debug ip packet de
CAT3550#debug ip packet detail
IP packet debugging is on (detailed)
CAT3550#pin
CAT3550#ping 172.16.1.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.1.2, timeout is 2 seconds:
01:03:34: FIBipv4-packet-proc: route packet from (local) src 172.16.1.1 dst 172.
16.1.2
01:03:34: FIBfwd-proc: Default:172.16.1.2/32 proces level forwarding
01:03:34: FIBfwd-proc: depth 0 first_idx 0 paths 1 long 0(0)
01:03:34: FIBfwd-proc: try path 0 (of 1) v4-adp-172.16.1.2-Vl1 first short ext 0
(-1)
01:03:34: FIBfwd-proc: v4-adp-172.16.1.2-Vl1 valid
01:03:34: FIBfwd-proc: ip_pak_table 0 ip_nh_table 65535 if Vlan1 nh 172.16.1.2 d
eag 0 via fib 0 path type adjacency prefix
01:03:34: FIBfwd-proc: packet routed to Vlan1 172.16.1.2(0)
01:03:34: FIBipv4-packet-proc: packet routing succeeded
01:03:34: FIBfwd-proc: ip_pak_table 0 ip_nh_table 65535 if Vlan1 nh 172.16.1.2 u
hp 1 deag 0 ttlexp 0
01:03:34: FIBfwd-proc: sending link IP ip_pak_table 0 ip_nh_table 65535 if Vlan1
nh 172.16.1.2 uhp 1 deag 0 ttlexp 0 rec 0
01:03:34: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending
01:03:34: ICMP type=8, code=0
01:03:34: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending full
pac.ket
01:03:34: ICMP type=8, code=0
01:03:36: FIBipv4-packet-proc: route packet from (local) src 172.16.1.1 dst 172.
16.1.2
01:03:36: FIBfwd-proc: Default:172.16.1.2/32 proces level forwarding
01:03:36: FIBfwd-proc: depth 0 first_idx 0 paths 1 long 0(0)
01:03:36: FIBfwd-proc: try path 0 (of 1) v4-adp-172.16.1.2-Vl1 first short ext 0
(-1)
01:03:36: FIBfwd-proc: v4-adp-172.16.1.2-Vl1 valid
01:03:36: FIBfwd-proc: ip_pak_table 0 ip_nh_table 65535 if Vlan1 nh 172.16.1.2 d
eag 0 via fib 0 path type adjacency prefix
01:03:36: FIBfwd-proc: packet routed to Vlan1 172.16.1.2(0)
01:03:36: FIBipv4-packet-proc: packet routing succeeded
01:03:36: FIBfwd-proc: ip_pak_table 0 ip_nh_table 65535 if Vlan1 nh 172.16.1.2 u
hp 1 deag 0 ttlexp 0
01:03:36: FIBfwd-proc: sending link IP ip_pak_table 0 ip_nh_table 65535 if Vlan1
nh 172.16.1.2 uhp 1 deag 0 ttlexp 0 rec 0
01:03:36: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending
01:03:36: ICMP type=8, code=0
01:03:36: IP: s=172.16.1.1 (local), d=172.16..1.2 (Vlan1), len 100, sending full
packet
01:03:36: ICMP type=8, code=0
01:03:37: FIBipv4-packet-proc: route packet from Vlan1 src 172.16.1.100 dst 172.
16.1.255
01:03:37: FIBfwd-proc: Default:172.16.1.255/32 receive entry
01:03:37: FIBipv4-packet-proc: packet routing failed
01:03:37: IP: s=172.16.1.100 (Vlan1), d=172.16.1.255 (Vlan1), len 229, rcvd 3
01:03:37: UDP src=138, dst=138
01:03:37: IP: s=172.16.1.100 (Vlan1), d=172.16.1.255, len 229, stop process pak
for forus packet
01:03:37: UDP src=138, dst=138
01:03:38: FIBipv4-packet-proc: route packet from (local) src 172.16.1.1 dst 172.
16.1.2
01:03:38: FIBfwd-proc: Default:172.16.1.2/32 proces level forwarding
01:03:38: FIBfwd-proc: depth 0 first_idx 0 paths 1 long 0(0)
01:03:38: FIBfwd-proc: try path 0 (of 1) v4-adp-172.16.1.2-Vl1 first short ext 0
(-1)
01:03:38: FIBfwd-proc: v4-adp-172.16.1.2-Vl1 valid
01:03:38: FIBfwd-proc: ip_pak_table 0 ip_nh_table 65535 if Vlan1 nh 172.16.1.2 d
eag 0 via fib 0 path type adjacency prefix
01:03:3.8: FIBfwd-proc: packet routed to Vlan1 172.16.1.2(0)
01:03:38: FIBipv4-packet-proc: packet routing succeeded
01:03:38: FIBfwd-proc: ip_pak_table 0 ip_nh_table 65535 if Vlan1 nh 172.16.1.2 u
hp 1 deag 0 ttlexp 0
01:03:38: FIBfwd-proc: sending link IP ip_pak_table 0 ip_nh_table 65535 if Vlan1
nh 172.16.1.2 uhp 1 deag 0 ttlexp 0 rec 0
01:03:38: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending
01:03:38: ICMP type=8, code=0
01:03:38: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending full
packet
01:03:38: ICMP type=8, code=0
01:03:40: FIBipv4-packet-proc: route packet from (local) src 172.16.1.1 dst 172.
16.1.2
01:03:40: FIBfwd-proc: Default:172.16.1.2/32 proces level forwarding
01:03:40: FIBfwd-proc: depth 0 first_idx 0 paths 1 long 0(0)
01:03:40: FIBfwd-proc: try path 0 (of 1) v4-adp-172.16.1.2-Vl1 first short ext 0
(-1)
01:03:40: FIBfwd-proc: v4-adp-172.16.1.2-Vl1 valid
01:03:40: FIBfwd-proc: ip_pak_table 0 ip_nh_table 65535 if Vlan1 nh 172.16.1.2 d
eag 0 via fib. 0 path type adjacency prefix
01:03:40: FIBfwd-proc: packet routed to Vlan1 172.16.1.2(0)
01:03:40: FIBipv4-packet-proc: packet routing succeeded
01:03:40: FIBfwd-proc: ip_pak_table 0 ip_nh_table 65535 if Vlan1 nh 172.16.1.2 u
hp 1 deag 0 ttlexp 0
01:03:40: FIBfwd-proc: sending link IP ip_pak_table 0 ip_nh_table 65535 if Vlan1
nh 172.16.1.2 uhp 1 deag 0 ttlexp 0 rec 0
01:03:40: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending
01:03:40: ICMP type=8, code=0
01:03:40: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending full
packet
01:03:40: ICMP type=8, code=0
01:03:42: FIBipv4-packet-proc: route packet from (local) src 172.16.1.1 dst 172.
16.1.2
01:03:42: FIBfwd-proc: Default:172.16.1.2/32 proces level forwarding
01:03:42: FIBfwd-proc: depth 0 first_idx 0 paths 1 long 0(0)
01:03:42: FIBfwd-proc: try path 0 (of 1) v4-adp-172.16.1.2-Vl1 first short ext 0
(-1)
01:03:42: FIBfwd-proc: v4-adp-172.16.1.2-Vl1 valid
01:03:42: FIBfwd-proc: ip_pak_table 0 ip_nh_table 65535.
Success rate is 0 percent (0/5)
CAT3550# if Vlan1 nh 172.16.1.2 deag 0 via fib 0 path type adjacency prefix
01:03:42: FIBfwd-proc: packet routed to Vlan1 172.16.1.2(0)
01:03:42: FIBipv4-packet-proc: packet routing succeeded
01:03:42: FIBfwd-proc: ip_pak_table 0 ip_nh_table 65535 if Vlan1 nh 172.16.1.2 u
hp 1 deag 0 ttlexp 0
01:03:42: FIBfwd-proc: sending link IP ip_pak_table 0 ip_nh_table 65535 if Vlan1
nh 172.16.1.2 uhp 1 deag 0 ttlexp 0 rec 0
01:03:42: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending
01:03:42: ICMP type=8, code=0
01:03:42: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending full
packet
01:03:42: ICMP type=8, code=0
CAT3550#sh arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 172.16.1.1 - 001f.6d53.6fc0 ARPA Vlan1
Internet 172.16.3.1 - 001f.6d53.6fc2 ARPA Vlan3
Internet 172.16.1.2 22 0012.00ec.2480 ARPA Vlan1
Internet 172.16.2.1 - 001f.6d53.6fc1 ARPA Vlan2
Internet 172.16.1.100 18 0006.1bcb.bb63 ARPA Vlan1
CAT3550#ping 172.16.1.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.1.2, timeout is 2 seconds:
01:04:23: FIBipv4-packet-proc: route packet from (local) src 172.16.1.1 dst 172.
16.1.2
01:04:23: FIBfwd-proc: Default:172.16.1.2/32 proces level forwarding
01:04:23: FIBfwd-proc: depth 0 first_idx 0 paths 1 long 0(0)
01:04:23: FIBfwd-proc: try path 0 (of 1) v4-adp-172.16.1.2-Vl1 first short ext 0
(-1)
01:04:23: FIBfwd-proc: v4-adp-172.16.1.2-Vl1 valid
01:04:23: FIBfwd-proc: ip_pak_table 0 ip_nh_table 65535 if Vlan1 nh 172.16.1.2 d
eag 0 via fib 0 path type adjacency prefix
01:04:23: FIBfwd-proc: packet routed to Vlan1 172.16.1.2(0)
01:04:23: FIBipv4-packet-proc: packet routing succeeded
01:04:23: FIBfwd-proc: ip_pak_table 0 ip_nh_table 65535 if Vlan1 nh 172.16.1.2 u
hp 1 deag 0 ttlexp 0
01:04:23: FIBfwd-proc: sending link IP ip_pak_table 0 ip_nh_table 65535 if Vlan1
nh 172.16.1.2 uhp 1 deag 0 ttlexp 0 rec 0
01:04:23: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending
01:04:23: ICMP type=8, code=0
01:04:23: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending full
pac.ket
01:04:23: ICMP type=8, code=0
01:04:25: FIBipv4-packet-proc: route packet from (local) src 172.16.1.1 dst 172.
16.1.2
01:04:25: FIBfwd-proc: Default:172.16.1.2/32 proces level forwarding
01:04:25: FIBfwd-proc: depth 0 first_idx 0 paths 1 long 0(0)
01:04:25: FIBfwd-proc: try path 0 (of 1) v4-adp-172.16.1.2-Vl1 first short ext 0
(-1)
01:04:25: FIBfwd-proc: v4-adp-172.16.1.2-Vl1 valid
01:04:25: FIBfwd-proc: ip_pak_table 0 ip_nh_table 65535 if Vlan1 nh 172.16.1.2 d
eag 0 via fib 0 path type adjacency prefix
01:04:25: FIBfwd-proc: packet routed to Vlan1 172.16.1.2(0)
01:04:25: FIBipv4-packet-proc: packet routing succeeded
01:04:25: FIBfwd-proc: ip_pak_table 0 ip_nh_table 65535 if Vlan1 nh 172.16.1.2 u
hp 1 deag 0 ttlexp 0
01:04:25: FIBfwd-proc: sending link IP ip_pak_table 0 ip_nh_table 65535 if Vlan1
nh 172.16.1.2 uhp 1 deag 0 ttlexp 0 rec 0
01:04:25: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending
01:04:25: ICMP type=8, code=0
01:04:25: IP: s=172.16.1.1 (local), d=172.16..1.2 (Vlan1), len 100, sending full
packet
01:04:25: ICMP type=8, code=0
01:04:27: FIBipv4-packet-proc: route packet from (local) src 172.16.1.1 dst 172.
16.1.2
01:04:27: FIBfwd-proc: Default:172.16.1.2/32 proces level forwarding
01:04:27: FIBfwd-proc: depth 0 first_idx 0 paths 1 long 0(0)
01:04:27: FIBfwd-proc: try path 0 (of 1) v4-adp-172.16.1.2-Vl1 first short ext 0
(-1)
01:04:27: FIBfwd-proc: v4-adp-172.16.1.2-Vl1 valid
01:04:27: FIBfwd-proc: ip_pak_table 0 ip_nh_table 65535 if Vlan1 nh 172.16.1.2 d
eag 0 via fib 0 path type adjacency prefix
01:04:27: FIBfwd-proc: packet routed to Vlan1 172.16.1.2(0)
01:04:27: FIBipv4-packet-proc: packet routing succeeded
01:04:27: FIBfwd-proc: ip_pak_table 0 ip_nh_table 65535 if Vlan1 nh 172.16.1.2 u
hp 1 deag 0 ttlexp 0
01:04:27: FIBfwd-proc: sending link IP ip_pak_table 0 ip_nh_table 65535 if Vlan1
nh 172.16.1.2 uhp 1 deag 0 ttlexp 0 rec 0
01:04:27: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending
01:04:27: ICMP type=8, code=0
01:04:2.7: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending full
packet
01:04:27: ICMP type=8, code=0
01:04:29: FIBipv4-packet-proc: route packet from (local) src 172.16.1.1 dst 172.
16.1.2
01:04:29: FIBfwd-proc: Default:172.16.1.2/32 proces level forwarding
01:04:29: FIBfwd-proc: depth 0 first_idx 0 paths 1 long 0(0)
01:04:29: FIBfwd-proc: try path 0 (of 1) v4-adp-172.16.1.2-Vl1 first short ext 0
(-1)
01:04:29: FIBfwd-proc: v4-adp-172.16.1.2-Vl1 valid
01:04:29: FIBfwd-proc: ip_pak_table 0. ip_nh_table 65535 if Vlan1 nh 172.16.1.2
deag 0 via fib 0 path type adjacency prefix
01:04:29: FIBfwd-proc: packet routed to Vlan1 172.16.1.2(0)
01:04:29: FIBipv4-packet-proc: packet routing succeeded
01:04:29: FIBfwd-proc: ip_pak_table 0 ip_nh_table 65535 if Vlan1 nh 172.16.1.2 u
hp 1 deag 0 ttlexp 0
01:04:29: FIBfwd-proc: sending link IP ip_pak_table 0 ip_nh_table 65535 if Vlan1
nh 172.16.1.2 uhp 1 deag 0 ttlexp 0 rec 0
01:04:29: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending
01:04:29: ICMP type=8, code=0
01:04:29: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending full
packet
01:04:29: ICMP type=8, code=0
01:04:31: FIBipv4-packet-proc: route packet from (local) src 172.16.1.1 dst 172.
16.1.2
01:04:31: FIBfwd-proc: Default:172.16.1.2/32 proces level forwarding
01:04:31: FIBfwd-proc: depth 0 first_idx 0 paths 1 long 0(0)
01:04:31: FIBfwd-proc: try path 0 (of 1) v4-adp-172.16.1.2-Vl1 first short ext 0
(-1)
.1:04:31: FIBfwd-proc: v4-adp-172.16.1.2-Vl1 valid
Success rate is 0 percent (0/5)
CAT3550#
01:04:31: FIBfwd-proc: ip_pak_table 0 ip_nh_table 65535 if Vlan1 nh 172.16.1.2 d
eag 0 via fib 0 path type adjacency prefix
01:04:31: FIBfwd-proc: packet routed to Vlan1 172.16.1.2(0)
01:04:31: FIBipv4-packet-proc: packet routing succeeded
01:04:31: FIBfwd-proc: ip_pak_table 0 ip_nh_table 65535 if Vlan1 nh 172.16.1.2 u
hp 1 deag 0 ttlexp 0
01:04:31: FIBfwd-proc: sending link IP ip_pak_table 0 ip_nh_table 65535 if Vlan1
nh 172.16.1.2 uhp 1 deag 0 ttlexp 0 rec 0
01:04:31: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending
01:04:31: ICMP type=8, code=0
01:04:31: IP: s=172.16.1.1 (local), d=172.16.1.2 (Vlan1), len 100, sending full
packet
01:04:31: ICMP type=8, code=0
CAT3550#
CAT3550#
CAT3550#
CAT3550#und
CAT3550#undebug all
All possible debugging has been turned off
CAT3550#
CAT3550#
CAT3550#pi
CAT3550#ping 172.16.1.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.1.2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
CAT3550#
**************************************************************************
Da li osim problema sa ARP broadcastingom postoje i neki drugi problemi koje ne uocavam?
Da li je problem mozda u tome sto je izmedju dva switcha wireless mreza, da li wireless mreza mozda ''skida'' VLAN tagove pa enkapsulacije ne prolazi??
Sutra cu pokusati sa ISL enkapsulacijom dok nabavim jos jedan 3550 switch jer 2950 ne podrzava ISL.
Sta je uostalom uzrok da se desi ''encapsulation failed''???
Hvala unaprijed!!!
[Ovu poruku je menjao gogo82 dana 27.03.2011. u 12:59 GMT+1]
[Ovu poruku je menjao gogo82 dana 28.03.2011. u 20:50 GMT+1]
Gogo82